Well instead of taking my word on it here is the article.
http://www.grassrootsmotorsports.com/plustest.html

At the very least on a honda civic 17" tires WILL CONSISTANTLY turn BETTER lap times than smaller wheels.

Hey george, make it a cup of coffee and a set of Victoracers in 205/60/15 and 225/60/15 and 225/40/18 and 265/35/18 and you'll have a deal

I'll even pay for the mount/balance, the entry fee to the track ;P)

Frankly, I'd be intrested to see what happens myself.

Best!
Ben

quote Originally posted by cadero2dmax: Jonathan, trust me your street tires ARE the difference. But if you put the same tire on, say for example (because this can really be done) - a Kumho Victoracer in the 18" size and the Kumho Victoracer in the 15" size, I will bet the reverse is true. I will wager a cuppa coffe the same driver in the same car will get a better time in the 15" with the larger sidewall. Now, before somebody pipes in with proof that I am wrong because of all the sedan series running the thin sidewall, I will qualify that by saying IN A FIERO. G

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Ben Cannon
88 Formula, T-top, Metalic Red. (2:13.138 at Sears Point) "Every Man Dies, not every man really Lives"
88 Formula, Northstar, Silver, In-Progreess. -Mel Gibson, "Braveheart"

i JUST yesterday had mine on a scale for shipping... 17s 47#s (the pair) and the 18s, are 68#s (pair)

Hello Everyone,

Here is a link i have been using for a while, I have checked a few of the weights of different wheels, and found them to be accurate
http://www.wheelweights.net/

Enjoy

That table says my rims weigh 23lbs. Then I must have 32lb tires