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oldcorollas Forums Junkie Location: Kita-Ku, Sapporo, Japan Registered: January 2003	Re: wider rear tyre = more understear??? Sat, 27 August 2005 06:19 hickoz_bro wrote on Sat, 27 August 2005 07:08 firstly tribology is the study of lubrication... secondly, true that co-efficient of friction is a material property, but when coupled with a dimension... say area then we can use and relate to it easier... eg, density is also a material property, but when coupled with volume, we have mass... tribology is actually more about surface... topography... and how it relates to friction and wear.. it's the topography of the hard surface (road) combined with the elastic deformation of the tyres that is of interest to us...(mostly) the lubrication part of tribology is about overcoming friction due to said topography so if you had tyres that have a coefficient of friction of 0.8, doubling the size does not make it 1.6... the normal force acting on the surface, multiplied by the friction coefficient, gives the force required to make the object slide. N x cf = SF thats how the soefficient is DEFINED.. area is contained in the normal force term.. ie N = load / area.... doubling the contact patch HALVES the normal force, and the friction coefficient remains unchanged, as does the force required to make the tyre slide (ie grip)... theoretically.. which is why i said that (theoretically) increasing tyre size, with all else being equal, will not change ultimate grip. [Updated on: Sat, 27 August 2005 06:20] [Report message to a moderator]

	Subject	Poster	Date
	wider rear tyre = more understear???	hickoz_bro	Tue, 23 August 2005 04:27
	Re: wider rear tyre = more understear???	4DaDrift	Tue, 23 August 2005 04:42
	Re: wider rear tyre = more understear???	hickoz_bro	Tue, 23 August 2005 04:48
	Re: wider rear tyre = more understear???	Stefan	Tue, 23 August 2005 05:39
	Re: wider rear tyre = more understear???	Norbie	Tue, 23 August 2005 04:43
	Re: wider rear tyre = more understear???	Stefan	Tue, 23 August 2005 05:37
	Re: wider rear tyre = more understear???	Norbie	Tue, 23 August 2005 05:50
	Re: wider rear tyre = more understear???	Stefan	Tue, 23 August 2005 05:57
	Re: wider rear tyre = more understear???	wilbo666	Tue, 23 August 2005 07:35
	Re: wider rear tyre = more understear???	Skip	Tue, 23 August 2005 04:49
	Re: wider rear tyre = more understear???	Nark	Tue, 23 August 2005 05:17
	Re: wider rear tyre = more understear???	draven	Tue, 23 August 2005 05:39
	Re: wider rear tyre = more understear???	draven	Tue, 23 August 2005 05:59
	Re: wider rear tyre = more understear???	Joshstix	Tue, 23 August 2005 06:35
	Re: wider rear tyre = more understear???	September_Squall	Tue, 23 August 2005 07:27
	Re: wider rear tyre = more understear???	oldcorollas	Tue, 23 August 2005 07:42
	Re: wider rear tyre = more understear???	oldcorollas	Tue, 23 August 2005 07:44
	Re: wider rear tyre = more understear???	Norbie	Tue, 23 August 2005 13:56
	Re: wider rear tyre = more understear???	oldcorollas	Tue, 23 August 2005 14:31
	Re: wider rear tyre = more understear???	Norbie	Tue, 23 August 2005 23:52
	Re: wider rear tyre = more understear???	terra	Tue, 23 August 2005 07:45
	Re: wider rear tyre = more understear???	kingmick	Tue, 23 August 2005 10:48
	Re: wider rear tyre = more understear???	oldcorollas	Tue, 23 August 2005 10:53
	Re: wider rear tyre = more understear???	kingmick	Tue, 23 August 2005 10:57
	Re: wider rear tyre = more understear???	kingmick	Tue, 23 August 2005 20:29
	Re: wider rear tyre = more understear???	oldcorollas	Tue, 23 August 2005 23:54
	Re: wider rear tyre = more understear???	Kyosho	Wed, 24 August 2005 07:32
	Re: wider rear tyre = more understear???	Norbie	Wed, 24 August 2005 23:44
	Re: wider rear tyre = more understear???	bahnugget	Thu, 25 August 2005 04:59
	Re: wider rear tyre = more understear???	draven	Fri, 26 August 2005 08:04
	Re: wider rear tyre = more understear???	djchye	Thu, 25 August 2005 10:22
	Re: wider rear tyre = more understear???	hickoz_bro	Thu, 25 August 2005 22:31
	Re: wider rear tyre = more understear???	oldcorollas	Fri, 26 August 2005 10:04
	Re: wider rear tyre = more understear???	hickoz_bro	Fri, 26 August 2005 10:23
	Re: wider rear tyre = more understear???	oldcorollas	Fri, 26 August 2005 12:19
	Re: wider rear tyre = more understear???	hickoz_bro	Fri, 26 August 2005 21:08
	Re: wider rear tyre = more understear???	oldcorollas	Sat, 27 August 2005 06:19
	Re: wider rear tyre = more understear???	oldcorollas	Sat, 27 August 2005 06:25
	Re: wider rear tyre = more understear???	hickoz_bro	Mon, 29 August 2005 13:36
	Re: wider rear tyre = more understear???	kingmick	Fri, 26 August 2005 07:56
	Re: wider rear tyre = more understear???	kingmick	Fri, 26 August 2005 22:00
	Re: wider rear tyre = more understear???	dayzii	Thu, 01 September 2005 08:17
	Re: wider rear tyre = more understear???	love ke70	Sun, 25 September 2005 11:30

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