Formula One Tyres - Wikipedia

Tyres designed for Formula One cars

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Formula One tyres are specialised racing tyres designed for use on a Formula One car. Tyres play a crucial role in the car's performance, affecting grip, handling, and overall speed. Tyres are also a component into racing strategy, depending on factors such as weather or deterioration. Throughout the history of Formula One, tyres have undergone major changes with different manufacturers and specifications used in the sport. Since 2011, tyres have been provided exclusively by Pirelli, an Italian tyre manufacturer.[1] As of the 2024 season, there are 8 separate types of tyres available for use during events.[2]

Design and usage

[edit]

Formula One tyres bear only a superficial resemblance to a normal road tyre. Whereas the latter has a useful life of up to 80,000 km (50,000 miles), the tyres used in Formula One are built to last less than one race distance. The purpose of the tyre determines the compound of the rubber to be used. In extremely wet weather, such as that seen in the 2007 European Grand Prix, the F1 cars are unable to keep up with the safety car in deep standing water due to the risk of aquaplaning. In very wet races, such as the 2011 Canadian Grand Prix, the tyres are unable to provide a safe race due to the amount of water, and so the race can be red flagged. The race is either then stopped permanently or suspended for up to a 3-hour period until the cars can race safely again. Both the latter – and successively the former – situations occurred at the 2021 Belgian Grand Prix.

History

[edit]

During the 1950s and 1960s, Formula One tyres were supplied by Dunlop, Englebert, Firestone, Continental and Goodyear. In 1958, Dunlop introduced its R5 racing tyre, replacing the cotton fabric of the earlier R1 to R4 tyres with nylon fabric, allowing for a reported 12 lb reduction in tyre weight.[3] During the 1960s, Dunlop introduced improved nylon casings, reduced aspect ratio, significantly increased tyre width, and the use of synthetic rubber.[3]

Slick tyres were introduced to Formula One by Firestone at the 1971 Spanish Grand Prix.[4] 1975's Ferrari 312T used a Goodyear 26.0"×16.2"–13" slick tyre (overall diameter × width) in the rear on a 13"×18" rim, with a Goodyear 20.0"×9.2"–13" slick tyre in the front on a 13×10" rim.[5]

For the 1981 season the maximum diameter of the rear tyre was limited to 26.0", while the diameter of the front tyres was increased. Therefore, from 1981 until 1992, Goodyear supplied white sidewall marked Eagle tyres with the sizes of 25.0"×10.0"–13" in the front and 26.0"×15.0"–13" in the rear.[6] For the 1993 season, the complete wheel width of the rear was reduced from 18" to 15".[7] This prompted Goodyear to change to yellow sidewall markings to correspond to the new, narrower rear tyres which were approximately 12.8" wide, down from the previous 15.0".[inconsistent]

For the 1997 F1 season, Bridgestone joined Goodyear in supplying tyres to F1 competitors, creating a tyre war between the two manufacturers. Goodyear would leave the sport following the 1998 season,[8] leaving Bridgestone as the sole tyre provider for the next two seasons.

In 1998, grooved tyres were introduced with three groove lines in the front tyres and four groove lines in the rear tyres.[9] Between 1999 and 2008, regulations required the tyres to feature a minimum of four 14 mm (0.55 in) grooves in them, with the intention of slowing the cars down. This is because a slick tyre, with no indentations, provides the most grip in dry conditions.[10][11] They could be no wider than 355 mm (14 in) at the front and 380 mm (15 in) at the rear, and the maximum diameter was 660 mm (26 in), or 670 mm (26.4 in) for wet tyres.[12]

In 2001, Michelin entered Formula One, once again creating a tyre war after Bridgestone had been the sole tyre provider for the preceding two seasons.[13]

In 2005, tyre changes were disallowed in Formula One, therefore the compounds were harder as the tyres had to last the full race distance of around 300 km (200 miles). Tyre changes were re-instated in 2006, following the dramatic and highly political 2005 United States Grand Prix, which saw Michelin tyres fail on two separate cars at the same turn, resulting in all Michelin runners pulling out of the Grand Prix, leaving just the three teams using Bridgestone tyres to race.

For 2007, Bridgestone again became the sole tyre partner and supplier in Formula One with the withdrawal of Michelin,[14] and introduced four compounds of tyre, two of which are made available at each race. The harder tyre (referred to as the "prime" tyre) is more durable but gives less grip, and the softer tyre (referred to as the "option" tyre) gives more grip but is less durable. Both compounds have to be used by each car during a race and the softer tyre had a painted white stripe in the second groove to distinguish between compounds. This was introduced after the first race of the season when confusion occurred because a small dot was put on the sidewall of the tyre, instead of the white stripe. Upon the reintroduction of slicks in 2009, the sidewalls of the softer tyres were painted green to indicate the difference in compound, as there were no longer any grooves in tyres. Each team must use each specification during the race, unless wet or intermediate tyres are used during the race, in which case this rule no longer applies.

Slick tyres were reintroduced at the beginning of 2009, along with aerodynamic changes intended to shift the balance towards mechanical grip in an attempt to increase overtaking.

On 2 November 2009, Bridgestone announced their withdrawal from Formula One at the end of the 2010 season.[15][16] Michelin, Cooper Avon and Pirelli showed interest in taking over the role of tyre partner and supplier. On 24 June 2010, it was announced that Pirelli would be the sole tyre partner and supplier for 2011 and would receive a three-year contract. They thus ended their programmes for both the Grand-Am Rolex Sports Car Series and FIA World Rally Championship after spending three years as an official tyre partner and supplier (as the Grand-Am Rolex Sports Car Series switched to Continental and the FIA World Rally Championship switched to Michelin tyres in 2011).[17] During August 2010, Pirelli commenced its test programme with the Toyota TF109 at the Mugello Circuit with Nick Heidfeld as the test driver.[18] From 2011, the feeder GP2 Series used identical Pirelli tyres as in F1.[19]

In 2009, with the removal of the four 14 mm (0.55 in) grooves, the front tyres gained proportionally larger contact patch. In 2010, the front tyres were narrowed from 270 mm (11 in) to 245 mm (9.6 in), in order to improve the balance of grip between the front and rear.[20] In 2011, with the sole tyre supplier having been changed from Bridgestone to Pirelli,[21] the rules were the same as the 2010 season rules concerning the tyres. All teams still were required to use each type of dry tyre compound supplied in the race, and drivers that made it through to Q3 still had to use the same tyres they used to set their fastest qualifying time with to start the race. However, the way of denoting different tyre specifications was changed. Rather than a green stripe denoting a softer compound, for each tyre specification, the lettering on the tyre would have a specific colour. The hard compound would have silver lettering, the medium compound would have white lettering, the soft tyres would have yellow lettering and the super-soft tyres would have red lettering. For the wet tyres, the intermediate tyres would have light blue lettering and the full wet tyres would have orange lettering.[22]

At the 2011 Malaysian Grand Prix, Pirelli introduced a coloured band around the outside of the tyre on the softer of the two dry compounds. This was due to confusion during the first round of the season. This measure was said to be a stopgap, with a permanent solution due to be implemented at the first European race of the season. The coloured line featured at the Chinese Grand Prix too.[23] From the Turkish Grand Prix, the permanent solution was implemented; the option compound had a new marking.[24] The option tyre had two thick coloured lines between the Pirelli and P Zero logos of each tyre, which made it easier to see the colour of the marking when the tyre rotates. The prime tyre remained the same markings as previously, though later in the season had the sidewall updated with the new markings.

In 2016, new tyre rules were introduced. Pirelli nominated three different compounds of slick tyres to bring to each race. Each team had 13 sets of dry tyres for the race weekend. Of the 13 sets, two sets of tyres were chosen by Pirelli to be reserved for the race. Additionally, one set of the softest compound were set aside for Q3. Teams were free to choose what they liked for their ten remaining sets from the three chosen compounds. Each driver must have used at least two different dry weather compounds during the race (including one set of the mandatory race tyres), and drivers who made it to Q3 must start the race with the tyres they set their fastest Q2 lap on. Teams were mandated to inform the FIA about their tyre choices eight weeks before the start of a European event and 14 weeks before a non-European race.[25][26]

In 2012, Pirelli introduced Cinturato sub-brand model exclusively for treaded intermediate and full-rain tyres while the P Zero sub-brand model remains exclusively for dry slicks.

For the 2017 F1 season, significantly wider Pirelli tyres were introduced at both the front and rear axles, while the overall diameter of the tyres was increased by 10mm (660 to 670 mm (26.0 to 26.4 in)). Front tyre size increased to 305/670-R13 up from the previous 245/660-R13, while rear-tyre size increased to 405/670-R13 up from the previous 325/660-R13.[27] In 2017 and 2018, the FIA Formula 2 Championship continued to use the pre-2017 size Pirelli F1 tyres.

Pirelli introduced two new tyre compounds for the 2018 F1 season – hypersoft (pink) and superhard (orange). The hard tyre became ice blue.[28]

Heading into the 2019 season, Pirelli reduced the tyre range from seven to five dry weather compounds.[29] They also scrapped the tyre naming system such that the tyres were denoted at each Grand Prix independently as hard, medium and soft with white, yellow and red sidewalls respectively rather than having a separate name and colour for each of the five tyres. The change was implemented so that casual fans could better understand the tyre system.

As Formula One wheel rim diameter size will switch from 13 to 18 in (330 to 457 mm), the tyre diameter of 2022-spec Pirelli Formula One tyres will also be altered, from 670 to 720 mm (26.4 to 28.3 in), while the tread width of 2022-spec Pirelli Formula One tyres are expected to be unchanged.

2005 United States Grand Prix controversy

[edit] Main article: 2005 United States Grand Prix

On Friday, 17 June 2005, during the afternoon's practice session, Ralf Schumacher, who was driving for Toyota, crashed heavily in turn 13 of the Indianapolis Motor Speedway road course, as a result of a left-rear tyre failure. Turn 13 on the Indianapolis Motor Speedway road course is a high-speed banked turn, unique in Formula One racing, that causes a greater than usual lateral load.[30][full citation needed] This pressure can cause the side walls of the tyre to bow and wear in abnormal places.[31]

The following day, Michelin reported that the tyres it had provided for its seven customer teams—BAR, McLaren, Red Bull, Renault, Toyota, Sauber, and Williams—were unsafe for extended high-speed use on this turn, and announced its intention to fly in another set of tyres from its Clermont-Ferrand headquarters.[32] However, the replacement tyres flown in, which were of the type used in the Spanish Grand Prix earlier that year, turned out to have the same problem when tested.[33]

In a letter to FIA Race Director Charlie Whiting, Michelin representatives Pierre Dupasquier and Nick Shorrock revealed that they did not know the cause of Schumacher's tyre failure, and unless the cars could be slowed down in turn 13, Michelin's tyres would be unsafe and unsuitable for use during the race.[34] Whiting replied, expressing his surprise that Michelin had not brought along a second set of tyres. Instead, he suggested that the teams be informed of the maximum safe speed in turn 13, and offered to monitor the turn by penalising any excess speed on the Michelin cars. He also addressed several solutions which had been proposed by the teams, insisting that use of the tyres flown in overnight would result in penalties, and the placement of a chicane in the turn was "out of the question"—the race would not be sanctioned by the FIA (making it a non-championship race) if the track layout was changed. He deemed the Michelin teams' proposals to be "grossly unfair" to the Bridgestone teams.[34] In a second letter, Dupasquier and Shorrock announced that they would not permit their teams to race on Michelin's tyres. The race then took place with only the three Bridgestone teams (Ferrari, Jordan and Minardi) taking part. The race was won by Michael Schumacher.

Make Cars Green campaign

[edit] Main article: Make Cars Green Bridgestone used tyres with green grooves for the 2008 Japanese Grand Prix. Rubens Barrichello (top) demonstrates the "prime" compound, whilst Nick Heidfeld (bottom) is running on the "option" compound, distinguished by the fact that one of the grooves is white.

At the 2008 Japanese Grand Prix, the tyres had the grooves painted green, as part of a promotion by the FIA to reduce the impact of motoring on the environment called Make Cars Green. The softer of the two types of tyre still had the second innermost groove painted white, as per normal.[35]

Upon the return of slicks at the beginning of the 2009 season, the white stripe to indicate differences between the tyres was no longer possible due to the lack of grooves on the tyres. Subsequently, in a continuation of the Make Cars Green tyres in Japan, Bridgestone painted the sidewalls of the option tyre green instead.

Tyre summary

[edit]

There were eight tyre compounds available for the 2023 season. Two of these are for wet weather driving, the intermediate (indicated by a green sidewall) for light standing water conditions, and the full wet (indicated by a blue sidewall) for heavy standing water. These are available to all the teams at every Grand Prix. Pirelli announced a change to the available tyre compounds for 2023, with a compound to be inserted between the old C1 and C2 compounds. This change is supposed to provide teams with more flexible strategy options after criticism towards the original C1 compound for a large drop in grip compared to the other tyres.[36] The remaining six tyre compounds are for dry running and are denoted C0 to C5, with C0 being the hardest tyre, meaning it provides the least grip but is the most durable, and C5 being the softest, having the most grip but being the least durable. The six tyre compounds form a sliding scale of durability and grip levels.

Pirelli nominates three of the compounds to be run at each race. Of these three, the hardest compound is named the hard tyre for the weekend and is denoted by a white sidewall, while the softest compound is named the soft and is denoted by a red sidewall, with the third of the nominated tyres named the medium tyre which is denoted by a yellow side wall. Drivers have to use at least two of the dry weather compound tyres during a race, unless the race is affected by wet weather.

With the intention of making tyre usage more sustainable in the future, Formula One will trial a reduction in allocated tyre sets from 13 to 11 at two races in 2023. At these races the use of tyres in qualifying will be mandated as hard in Q1, medium in Q2 and soft in Q3, assuming that the weather is dry. Teams are usually free to choose which tyre compound they run during qualifying.[37]

These are the eight Formula One tyre compounds supplied by Pirelli for the 2023 season

No.	Compound details						Tread	Driving conditions	Speed	Grip	Durability
C0		Hard(white)	Does not appear				Slick	Dry	6 – Slowest	6 – Least grip	1 – Most durable
C1				Medium(yellow)	Does not appear				5	5	2
C2						Soft(red)			4	4	3
C3									3	3	4
C4	Does not appear								2	2	5
C5	Does not appear								1 – Fastest	1 – Most grip	6 – Least durable
–				Intermediate(green)			Treaded	Wet(light standing water)	—
–				Wet(blue)				Wet(heavy standing water)	—
Source:[2]

Manufacturers

[edit]

From 2011 onwards, the Italian manufacturer Pirelli is the sole tyre supplier.[14] The deal is currently set to last until the 2027 season.[1]

Past manufacturers include:

• Avon
• Bridgestone
• Continental
• Dunlop
• Englebert
• Firestone
• Goodyear
• Michelin

Tyre manufacturers by season

[edit]

The manufacturer that is competing in 2024 is shown in bold. These results are correct as of the 2024 São Paulo Grand Prix.

Season	Manufacturer 1	Wins	Manufacturer 2	Wins	Manufacturer 3	Wins	Manufacturer 4	Wins	Manufacturer 5	Wins	Manufacturer 6	Wins
1950	Pirelli	6	Firestone	1	Dunlop	0	Englebert	0
1951	Pirelli	7	Firestone	1	Dunlop	0	Englebert	0
1952	Pirelli	7	Firestone	1	Dunlop	0	Englebert	0
1953	Pirelli	8	Firestone	1	Dunlop	0	Englebert	0
1954	Pirelli	4	Continental	4	Firestone	1	Englebert	0	Dunlop	0	Avon	0
1955	Continental	5	Englebert	1	Firestone	1	Pirelli	0	Dunlop	0
1956	Englebert	5	Pirelli	2	Firestone	1	Dunlop	0	Avon	0
1957	Pirelli	7	Firestone	1	Englebert	0	Dunlop	0	Avon	0
1958	Dunlop	7	Englebert	2	Continental	1	Firestone	1	Pirelli	0	Avon	0
1959	Dunlop	8	Firestone	1	Avon	0
1960	Dunlop	9	Firestone	1
1961	Dunlop	8
1962	Dunlop	9
1963	Dunlop	10
1964	Dunlop	10	Goodyear	0
1965	Dunlop	9	Goodyear	1
1966	Goodyear	4	Dunlop	3	Firestone	2
1967	Firestone	6	Goodyear	5	Dunlop	0
1968	Firestone	6	Goodyear	3	Dunlop	3
1969	Dunlop	6	Goodyear	3	Firestone	2
1970	Firestone	10	Dunlop	2	Goodyear	1
1971	Goodyear	7	Firestone	4
1972	Firestone	7	Goodyear	5
1973	Goodyear	15	Firestone	0
1974	Goodyear	15	Firestone	0
1975	Goodyear	14	Firestone	0
1976	Goodyear	16	Dunlop	0	Bridgestone	0
1977	Goodyear	17	Dunlop	0	Bridgestone	0	Michelin	0
1978	Goodyear	11	Michelin	5
1979	Goodyear	8	Michelin	7
1980	Goodyear	11	Michelin	3
1981	Michelin	13	Goodyear	2	Avon	0	Pirelli	0
1982	Goodyear	8	Michelin	8	Pirelli	0	Avon	0
1983	Michelin	9	Goodyear	6	Pirelli	0
1984	Michelin	14	Goodyear	2	Pirelli	0
1985	Goodyear	15	Pirelli	1
1986	Goodyear	15	Pirelli	1
1987	Goodyear	16
1988	Goodyear	16
1989	Goodyear	16	Pirelli	0
1990	Goodyear	16	Pirelli	0
1991	Goodyear	15	Pirelli	1
1992	Goodyear	16
1993	Goodyear	16
1994	Goodyear	16
1995	Goodyear	17
1996	Goodyear	16
1997	Goodyear	17	Bridgestone	0
1998	Bridgestone	9	Goodyear	7
1999	Bridgestone	16
2000	Bridgestone	17
2001	Bridgestone	13	Michelin	4
2002	Bridgestone	15	Michelin	2
2003	Bridgestone	9	Michelin	7
2004	Bridgestone	15	Michelin	3
2005	Michelin	18	Bridgestone	1
2006	Michelin	9	Bridgestone	9
2007	Bridgestone	17
2008	Bridgestone	18
2009	Bridgestone	17
2010	Bridgestone	19
2011	Pirelli	19
2012	Pirelli	20
2013	Pirelli	19
2014	Pirelli	19
2015	Pirelli	19
2016	Pirelli	21
2017	Pirelli	20
2018	Pirelli	21
2019	Pirelli	21
2020	Pirelli	17
2021	Pirelli	22
2022	Pirelli	22
2023	Pirelli	22
2024	Pirelli	21

Records

[edit]

Ordered by number of races won. The manufacturer that is competing in 2024 is shown in bold. These results are correct as of the 2024 São Paulo Grand Prix.

Pos	Manufacturer	Seasons[38]	Starts	Wins	%	Solesupplier	First win	Last win	World Championships
									Drivers	Constructors
1	Goodyear	1964–1998	494	368	74.49%	113[39]	1965 Mexican Grand Prix	1998 Italian Grand Prix	24	26
2	Pirelli	1950–19581981–19861989–19912011–present	482[40]	327	67.84%	281[41]	1950 British Grand Prix	2024 São Paulo Grand Prix	19	13
3	Bridgestone	1976–19771997–2010[42]	244	175	71.72%	116[43]	1998 Australian Grand Prix	2010 Abu Dhabi Grand Prix	11	11
4	Michelin	1977–19842001–2006	215	102	47.44%	0	1978 Brazilian Grand Prix	2006 Japanese Grand Prix	6	4
5	Dunlop	1950–19701976–1977	175	83	47.42%	37[44]	1958 Monaco Grand Prix	1970 Belgian Grand Prix	8	9
6	Firestone	1950–19601966–1975	121	48	40.49%	11[45]	1950 Indianapolis 500	1972 Italian Grand Prix	4	3
7	Continental	1954–19551958	13	10	76.92%	0	1954 French Grand Prix	1958 Argentine Grand Prix	2	0
8	Englebert	1950–1958	61	8	13.11%	0	1955 Monaco Grand Prix	1958 British Grand Prix	2	0
9	Avon	1954–19581981–1982	29	0	0.00%	0	N/A	N/A	0	0

References

[edit]

1. ^ a b "Pirelli to continue as Formula 1's exclusive tyre supplier until 2027". Formula 1 Press Release. Retrieved 12 February 2022.
2. ^ a b "F1® tires". Pirelli. 6 March 2021.
3. ^ a b "The Evolution of Race Tyres". Stuckey Tyres. Retrieved 17 November 2018.
4. ^ Ernst, Kurt (12 August 2013). "Montjuic, 1971: When Formula 1 met racing slicks". Hemmings Daily. Retrieved 1 May 2019.
5. ^ "Ferrari 312T". f1technical.net. Retrieved 7 November 2019.
6. ^ "Ferrari F1 87-88". f1technical.net. Retrieved 17 November 2018.
7. ^ "F1 rules and stats 1990–1999". f1technical.net. January 2009. Retrieved 6 November 2019.
8. ^ "Motor Racing: Goodyear to leave F1 after 30 years". The Independent. 20 November 1997. Retrieved 26 January 2022.
9. ^ De Groote, Steven (3 July 2008). "Tyre use in Formula One". f1technical.net. Retrieved 6 December 2016.
10. ^ FIA (13 July 2007). "Formula One – Sporting Regulations – 2007" (PDF). fia.com. Fédération Internationale de l'Automobile. Archived (PDF) from the original on 29 January 2019. Retrieved 11 August 2019.
11. ^ FIA (22 February 2008). "Formula One – Technical Regulations – 2008" (PDF). fia.com. Fédération Internationale de l'Automobile. Archived (PDF) from the original on 21 October 2017. Retrieved 11 August 2019.
12. ^ "Formula One – Technical Regulations – 2009" (PDF). Fédération Internationale de l'Automobile. 11 July 2008. Archived (PDF) from the original on 10 September 2008. Retrieved 21 November 2008.
13. ^ "Michelin to return to F1 in 2001". Autosport. Retrieved 26 January 2022.
14. ^ a b "Officially Official: Bridgestone signs exclusive deal with F1". Autoblog. Retrieved 26 January 2022.
15. ^ "Bridgestone to Drop Formula One Pact". The Wall Street Journal. Archived from the original on 27 March 2020. Retrieved 27 March 2020.
16. ^ English, Steven (2 November 2009). "Bridgestone to quit F1 after 2010". Autosport. Retrieved 1 May 2019.
17. ^ Staff (23 June 2010). "Pirelli tyres, adjustable rear wings among 2011 changes". Tata Communications. Archived from the original on 21 October 2012. Retrieved 24 June 2010.
18. ^ "Tyre Blog". tyreblog.co.uk. Archived from the original on 21 March 2016. Retrieved 6 December 2016.
19. ^ GMM (6 September 2010). "GP2 series to use Pirelli's F1 tyres in 2011". Motorsport.com. Retrieved 17 November 2018.
20. ^ "Règlements 2010: technique et sportif". ZoneF1.com (in French). 2010. Archived from the original on 19 April 2016. Retrieved 11 August 2019.
21. ^ "Pirelli extend their Formula 1 contract with the FIA until 2019". Sky Sports. Retrieved 26 January 2022.
22. ^ "Pirelli tyres to have six different colours for 2011 Formula 1 season". [permanent dead link‍]. Pirelli. Retrieved 28 March 2011
23. ^ "Pirelli tweak ahead of Malaysia". [permanent dead link‍]. 7 April 2011.
24. ^ "New markings for Pirelli's tyres". Planet F1. Archived from the original on 25 April 2011. Retrieved 28 May 2011.
25. ^ Parkes, Ian (11 December 2015). "How the 2016 Formula 1 tyre rules will work". Autosport.com. Retrieved 3 June 2016.
26. ^ "Tyres". Formula1.com. Retrieved 10 March 2019.
27. ^ "GP2 series to use Pirelli's F1 tyres in 2011". Motorsport.com. Retrieved 17 November 2018.
28. ^ "Pink hypersoft and orange superhard join Pirelli's 2018 tyre line-up". formula1.com. Retrieved 23 November 2017.
29. ^ "Pirelli reveal design tweak for 2019 testing compounds". formula1.com. Retrieved 26 January 2022.
30. ^ "Michelin: Tyres not flawed, just unsuitable". Archived 30 September 2007 at the Wayback Machine. Crash.net. Retrieved 2 December 2006
31. ^ "Bridgestone take pop at Michelin over USGP '05". Crash.net. Archived 27 September 2007 at the Wayback Machine. Retrieved 2 December 2006
32. ^ "Michelin looking to fly in new tyres". ITV. Archived 29 September 2007 at the Wayback Machine. Retrieved 5 August 2006
33. ^ Stoddart comments on US Grand Prix". Motorsport.com. Archived 6 June 2011 at the Wayback Machine. Retrieved 5 August 2006
34. ^ a b Letters between representatives of Michelin and Charlie Whiting, the FIA Formula One Race Director. www.newsonf1.net. Retrieved 5 August 2006
35. ^ "F1 tyres to promote 'green' push". BBC Sport. Retrieved 8 October 2008
36. ^ "Pirelli expand 2023 tyre F1 range with sixth compound 'C0'". Racefans.net. 20 November 2022. Retrieved 23 November 2022.
37. ^ "F1 to trial tweaked qualifying format in 2023". Autosport.com. 2 May 2022. Archived from the original on 18 August 2022. Retrieved 18 August 2022.
38. ^ In depth tyre manufacturers history in F1 www.statsf1.com. Retrieved 17 August 2007
39. ^ Goodyear was sole tyre supplier in F1 in 1987–1988 and 1992–1996.
40. ^ "Pirelli". StatsF1. Retrieved 3 November 2024.
41. ^ Pirelli has been the sole tyre supplier in F1 from the start of the 2011 season.
42. ^ Bridgestone provided tyres in a limited capacity at the 1976 and 1977 Japanese Grand Prix, then for the full season from 1997 through 2010.
43. ^ Bridgestone was sole tyre supplier in F1 in 1999–2000 and 2007–2010.
44. ^ Dunlop was sole tyre supplier in F1 in 1960–1963.
45. ^ Firestone was sole tyre supplier at the Indianapolis 500 races in 1950–1960.

External links

[edit]

• Pirelli F1 Tyres
• FIA tyre regulation summary
• FIA tyre regulations
• Formula One Tyre Technology | Bridgestone Motorsport Official Site
• The Aerodynamic Development of the Formula One Car
• Bridgestone Teams, Single Tyre Formula And Sole Supplier
• The ATLAS Rough Guide: How to Set Up a Formula One Car (Part One)

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