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right, it's how dragracers can get a coeff. of friction greater than 1. still nothing about the area in contact with the road is ever mentioned. the material deformation is due to the compound, and the force provides the grip, that's why racecars have downforce, more grip... nothing is ever...

thanks...took a look...it was a very interesting read. I might have to pick up one of his books on tire dynamics... sjd

so how does area fit into the equation? friction force = (coeff of fric) x (summation of tire forces (Fx, Fy, Fz) or is there more to grip than friction force? sjd

could that just be that the breakaway is more pronounced at the limit? you have grip grip grip grip nothing...as opposed to a skinny tire which is grip grip give give slide nothing...it's what made 911 turbos such bastard cars (and all the weight in back) as soon as the tires gave, you were...

http://forums.bimmerforums.com/forum/showthread.php?t=245422 for the curious, namely norm. This all originally started with a post "I need more grip, how wide should I make my tires"...and has spooled out of control into "wider /= more grip", and in fact, can reduce grip in certain situations...

In a very heated debate on another forum, some associates and I have been debating whether or not wider is truly better. So I address this forum...(it's been forever since I posted last) The basis is that for the same compound of tire, running in it's proper temperature zone, that wider is not...

Haha....lots of hand polishing... they demonstrated it on one of the custom motorcycle shows on the discovery channel... the frame was Alum. and welds had to be hand polished. sjd