greggors84
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| posted on 8/5/06 at 04:19 PM |
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Tyres on Racecars
Was thinking the other day while reading a post about tyres on here.
Why do GT/LMP style cars have small profile rubber on huge rims, while F1 cars and other single seaters use smaller rims and much bigger profile
tyres.
Is it to do with tyre wear? As GT/LMP cars usually race for longer stints.
You may enlighten me.
Chris
The Magnificent 7!
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muzchap
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| posted on 8/5/06 at 07:21 PM |
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Good question 
I was always under the impression that the tyre on Formula 1 cars acted as the suspension?
And the high tyre wall always ensured a consistent grip on the road.
Now - I realise that seems contradictory to GT cars - but that's because GT cars typically have better suspension and I'm
'guessing' their aerodynamic requirements are slightly different and the lower profile tyres help to keep everything close to the ground
and provide for stabler cornering/braking etc.
Of course this is just a guess by me - I'd be really interested to hear the 'expert' 100% accurate reasoning!
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If you believe you're not crazy, whilst everybody is telling you, you are - then they are definitely wrong!
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I love speed :-P
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| posted on 8/5/06 at 07:51 PM |
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i dont no if this is relevant or if this is true but i think that in ETCC, they changed the rules a while ago so that the cars had to use 17 inch, the
point of this was to slow the cars down, but like i say i dont no if that is true
Also could they be bigger, for bigger discs?
[Edited on 8/5/2006 by I love speed :-P]
Don't Steal
The Government doesn’t like the competition
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MikeR
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| posted on 8/5/06 at 09:22 PM |
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F1 cars have a rule on what the tyre should look like - hence they look like they do.
I'd guess with the money they have available and there desire for minimal suspension travel in an ideal world they'd make a carbon fiber
uridium unobtanium wheel thats 20" weighs 250 grams and has a light smattering of rubber on top of it.
(which if you're reading another thread i'm contributing to about tyres goes against what i'm saying, but this is a very specialised
race car with only one purpose, removing ruber compliant bits to replace them with adjustable, programmable bits is, i'd guess, better
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Syd Bridge
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| posted on 9/5/06 at 09:41 AM |
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F1 has rule specifying 13" wheels. Otherwise they'd run with much bigger, like the LM cars do....to fit bigger brakes.
The bigger OD brakes need less force to achieve the same stopping power, so last a lot longer. IE endurance distance.
So, bigger wheels to fit bigger brakes to last longer.
A simple answer, but that's the basics of it.
Cheers.
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greggors84
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| posted on 9/5/06 at 10:07 AM |
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So why don't F1 have smaller profile tyres? Is it to achieve the bigger rolling radius for top speed? Although they are sacraficing
acceleration....
Chris
The Magnificent 7!
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