The Different between "Gain Grip by Width" & "Gain Grip by Compound"?

[N1rve]

Originally Posted by BRZZZZZZZZZZ

For me, if I hear someone say 225 wide RE-11s and another person say 255 wide V12s side by side with no other info, in my head I think V12 guy wants ok tires with a meaty tread/wheel/look setup, whereas RE-11 guy wants max performance for the width he has chosen.

I am running RS-3s and RE-11s in 225 now and have considered stepping up to 245 or 255 RS-3/RE-11/Z11/PSS but I have a nagging feeling that on stock power I will be disappointed with the extra weight associated of having to go up to a wider 17" wheel plus larger sized tire.

Yes, do not upgrade your size.

[ame="https://www.youtube.com/watch?v=r_IWa_qlt3g"]https://www.youtube.com/watch?v=r_IWa_qlt3g[/ame]

Your car will be slown down....

[kelee]

rolling resistance is also determined by the amount of deformation in the tire. it also determines the contact patch.

side wall stiffness also affects the shape and size of the contact patch.


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[stockysnail]

Originally Posted by BRGT86

why do you say a 255 V12 tire provides similar grip to a 225 RE11? i highly doubt that.

better compound > unnecessary width

but you forgot to factor in tire wear. RE11's (and similar tires) wont last very long on a daily driver. it's overkill and you'll be spending a lot of money on tires for minimal return. running a 225 RE11 will most likely have more grip than a 255 V12 street tire, but the V12 will at least last way longer. and running a 255 V12 will also help provide more grip than a 225 V12. so running a wider "street tire" can get you increased grip (from stock tires), without having to get more race-oriented tires, but still have way better treadlife than running a race-oriented tire.

I will slightly disagree with you one the point you made that RE11's won't last very long although it's subjective. I've used mine for 3 years of daily driving, 4 track days, 1 drag day, and 2 autox. It's my only car. I'd estimate about 40-50k miles on them. They still have another 6-12 month of life left in them.