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Location:
Kita-Ku, Sapporo, Japan
Registered:
January 2003
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Re: wider rear tyre = more understear???
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Tue, 23 August 2005 07:42
 
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i fail to see that with equally good quality tyres, assuming that neither one is too big or too small for the car, that going up a small amount in width will actually increase or reduce rear grip, by much..
ultimate grip is a function of the normal force and the friction coefficient of the tyres. (and of course angle of tyres to road etc)
the friction coefficient (depending on road condition) _does_ increase a little with increasing normal force, since you are pushing the tyres into the roads irregularities more....
if you have same compound tyres, the desired slip angle will be very similar for both tyres..
unless we are talking about slicks, where there is not linear friction coefficient, and there is much more chemical bonding of tyre to road (hance faster material loss). in that case, a wider tyre results in more grip for the same normal force..
but for road tyres, you are mostly relying on friction, and friction increases with normal force, or force per unit area (until such time as the rubber cannot get more grip from being pushed into the road surface)... so i would hesitantly say that a wider tyre, given all other identical conditions, would give you _less_ ultimate grip...
of course, once the tyres are sliding, we are back to similar co-efficients for both tyres and possibly some more chemical grip as the tyre heats up at the road surface from slipping...
anyhoo, maybe i'm wrong, but it's a different way to think about it...
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| | Subject | Poster | Date |
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wider rear tyre = more understear???
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hickoz_bro | Tue, 23 August 2005 04:27 |
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Re: wider rear tyre = more understear???
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4DaDrift | Tue, 23 August 2005 04:42 |
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Re: wider rear tyre = more understear???
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hickoz_bro | Tue, 23 August 2005 04:48 |
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Re: wider rear tyre = more understear???
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Stefan | Tue, 23 August 2005 05:39 |
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Re: wider rear tyre = more understear???
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Norbie | Tue, 23 August 2005 04:43 |
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Re: wider rear tyre = more understear???
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Stefan | Tue, 23 August 2005 05:37 |
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Re: wider rear tyre = more understear???
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Norbie | Tue, 23 August 2005 05:50 |
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Re: wider rear tyre = more understear???
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Stefan | Tue, 23 August 2005 05:57 |
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Re: wider rear tyre = more understear???
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wilbo666 | Tue, 23 August 2005 07:35 |
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Re: wider rear tyre = more understear???
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Skip | Tue, 23 August 2005 04:49 |
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Re: wider rear tyre = more understear???
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Nark | Tue, 23 August 2005 05:17 |
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Re: wider rear tyre = more understear???
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draven | Tue, 23 August 2005 05:39 |
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Re: wider rear tyre = more understear???
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draven | Tue, 23 August 2005 05:59 |
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Re: wider rear tyre = more understear???
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Joshstix | Tue, 23 August 2005 06:35 |
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Re: wider rear tyre = more understear???
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September_Squall | Tue, 23 August 2005 07:27 |
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Re: wider rear tyre = more understear???
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oldcorollas | Tue, 23 August 2005 07:42 |
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Re: wider rear tyre = more understear???
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oldcorollas | Tue, 23 August 2005 07:44 |
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Re: wider rear tyre = more understear???
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Norbie | Tue, 23 August 2005 13:56 |
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Re: wider rear tyre = more understear???
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oldcorollas | Tue, 23 August 2005 14:31 |
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Re: wider rear tyre = more understear???
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Norbie | Tue, 23 August 2005 23:52 |
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Re: wider rear tyre = more understear???
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terra | Tue, 23 August 2005 07:45 |
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Re: wider rear tyre = more understear???
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kingmick | Tue, 23 August 2005 10:48 |
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Re: wider rear tyre = more understear???
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oldcorollas | Tue, 23 August 2005 10:53 |
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Re: wider rear tyre = more understear???
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kingmick | Tue, 23 August 2005 10:57 |
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Re: wider rear tyre = more understear???
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kingmick | Tue, 23 August 2005 20:29 |
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Re: wider rear tyre = more understear???
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oldcorollas | Tue, 23 August 2005 23:54 |
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Re: wider rear tyre = more understear???
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Kyosho | Wed, 24 August 2005 07:32 |
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Re: wider rear tyre = more understear???
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Norbie | Wed, 24 August 2005 23:44 |
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Re: wider rear tyre = more understear???
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bahnugget | Thu, 25 August 2005 04:59 |
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Re: wider rear tyre = more understear???
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draven | Fri, 26 August 2005 08:04 |
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Re: wider rear tyre = more understear???
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djchye | Thu, 25 August 2005 10:22 |
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Re: wider rear tyre = more understear???
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hickoz_bro | Thu, 25 August 2005 22:31 |
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Re: wider rear tyre = more understear???
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oldcorollas | Fri, 26 August 2005 10:04 |
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Re: wider rear tyre = more understear???
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hickoz_bro | Fri, 26 August 2005 10:23 |
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Re: wider rear tyre = more understear???
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oldcorollas | Fri, 26 August 2005 12:19 |
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Re: wider rear tyre = more understear???
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hickoz_bro | Fri, 26 August 2005 21:08 |
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Re: wider rear tyre = more understear???
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oldcorollas | Sat, 27 August 2005 06:19 |
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Re: wider rear tyre = more understear???
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oldcorollas | Sat, 27 August 2005 06:25 |
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Re: wider rear tyre = more understear???
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hickoz_bro | Mon, 29 August 2005 13:36 |
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Re: wider rear tyre = more understear???
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kingmick | Fri, 26 August 2005 07:56 |
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Re: wider rear tyre = more understear???
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kingmick | Fri, 26 August 2005 22:00 |
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Re: wider rear tyre = more understear???
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dayzii | Thu, 01 September 2005 08:17 |
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Re: wider rear tyre = more understear???
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love ke70 | Sun, 25 September 2005 11:30 |
