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27 Jan 2003, 06:55 (Ref:487113)
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#1 | ||
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Veteran
Join Date: Dec 2001
Posts: 1,135
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Number of tyre grooves
This might seem like a pretty simple question, but, how many grooves are allowed on a tyre?
im wondering if the rules have changed between the seasons, because usually there are 4 grooves on the front, and 4 on the rear. Explain why there are 5 grooves on the front, and 3 at the rear on this picture. Is it just something Michelin are testing for some reason. Maybe are the regulations 16 in total? And this picture is from testing, not from a GP http://a324.g.akamai.net/f/324/3126/.../diapo_112.jpg |
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27 Jan 2003, 07:03 (Ref:487118)
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#2 | |
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Veteran
Join Date: Jan 2003
Posts: 1,153
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too many
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27 Jan 2003, 09:42 (Ref:487190)
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#3 | ||
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Veteran
Join Date: Dec 2000
Posts: 11,312
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Maybe someone has photoshopped them.
There is no change to the tyre regs this year, so there is no reason why they should be running different spec tyres, my theory is someone has just been messing around in photopaint. Although a year ago I believe there was talk of the FIA putting a 5th groove in the tyres for the 2002 season after the tyre war of 2001 saw lap times drop. |
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27 Jan 2003, 09:46 (Ref:487192)
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#4 | |
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Veteran
Join Date: Oct 2002
Posts: 7,979
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No photoshop, comes from www.f1-live.com
Not sure if they are a reliable newssite. |
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27 Jan 2003, 10:02 (Ref:487200)
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#5 | ||
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Veteran
Join Date: Mar 2000
Posts: 5,867
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I don't think that it's doctored either. Rules regarding tyres have not changed. Anyway. Another interesting thing is that the grooves on the rear tyres are not "arranged symmetrically about the centre of the tyre tread" as Article 77) says.
Last edited by Red; 27 Jan 2003 at 10:03. |
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27 Jan 2003, 10:05 (Ref:487201)
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#6 | ||
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Veteran
Join Date: Dec 2000
Posts: 11,312
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Maybe they are a light wet compound?
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27 Jan 2003, 10:08 (Ref:487208)
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#7 | |
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Veteran
Join Date: Jan 2003
Posts: 2,299
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There are two of those pictures from the recent test at Valencia...both McLaren...they don't show any of the Williams' wheels.
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27 Jan 2003, 10:28 (Ref:487222)
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#8 | ||
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Veteran
Join Date: Dec 2001
Posts: 1,135
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well, the bridgestones seemed alright
there are many different pics of the McLaren with the wierd tyres |
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27 Jan 2003, 18:25 (Ref:487541)
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#9 | ||
 Race OfficialVeteran
Join Date: Nov 2001
Posts: 4,700
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I don't think it was 4-4: I'm pretty sure that there has been a difference between front and rear. Didn't think there were 5 though...
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__________________
DDMC Rescue Crew, Post Chief & Flag Marshal
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27 Jan 2003, 18:40 (Ref:487557)
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#10 | |
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Veteran
Join Date: Oct 2002
Posts: 7,979
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27 Jan 2003, 18:46 (Ref:487563)
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#11 | ||
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Rookie
Join Date: Sep 2002
Posts: 40
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The number of grooves changed in 1999 after they tried 3 in the front and 4 in the rear. It then changed to 4 in the front and 4 in the rear.
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27 Jan 2003, 19:02 (Ref:487579)
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#12 | ||
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Veteran
Join Date: Dec 2000
Posts: 11,312
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Well in 1998 the grooves were:
3 front 4 rear In 1999 it was 4 front 4 rear and has been the same since. |
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27 Jan 2003, 19:19 (Ref:487594)
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#13 | ||
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Racer
Join Date: Jun 2001
Posts: 209
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It's probably a wet/intermediate compound.
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__________________
Now days everybody wanna talk, like they got sumthin to say, but nuttin comes out when they move their lips, just a bunch of gibberish, what the M******** is that but they forgot about Jacques...
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28 Jan 2003, 00:50 (Ref:487881)
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#14 | ||
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Rookie
Join Date: Dec 2002
Posts: 6
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The most likely explaination for this is that the tyres are actually wet or intermediate tyres being used on installation type runs. The tyre rules have not changed so the rules still state that there must be 4 front and 4 rear grooves. It has certainly thrown up some interesting thoughts for us though. Note: the driver is a young British guy Paffert or something like that and he would be a fair way down the McLaren testing tree in terms of important go fast bits being tested. This ties in with the thought that he is doing instalation type laps where pure performance is not the aim and it may even have been early in the day with some parts of the track still a bit wet. All of the main drivers at the test drove on normal dry tyres.
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