13’s if you can fit them over your brakes!
Originally posted by DB2-R81
13’s if you can fit them over your brakes!
i dont know if you’re joking… but wouldn’t 13s comprimise too much handling for the less rotational mass? i would think that 15s or 16s or maybe 14s would be the all out best performance wise taking rotational mass… how far the mass is from the center, along with handling… ah well. i wont be getting any new rims for a while so its 14s for me 
Not for use on the street, I was just joking, The quickest autocross cars use them. Did I answer you questions about tires?
I want 13’s. Seriously. For the street. Does anyone know which ones will fit over the brakes? What offset to use? What tires would be good?
Originally posted by mos
I want 13’s. Seriously. For the street. Does anyone know which ones will fit over the brakes? What offset to use? What tires would be good?
i got 13’s… aka spare tires up front… used old ones for burning out… i got my coilovers in “demon drop” form highest in the back lowest in the front… fun $h!t 
Originally posted by DB2-R81
Not for use on the street, I was just joking, The quickest autocross cars use them. Did I answer you questions about tires?
yeah… except the difference in grip between slicks and street tires… the coefficient of friction is the only factor that provides more friction between the two tires? and how much more could it possibly be? that is generally a very very small number anyway…
Originally posted by DB2-R81
Not for use on the street, I was just joking, The quickest autocross cars use them. Did I answer you questions about tires?
Whoa, Whoa, the fastest auto-x cars use 13"s?!? Is that what you were saying? What series tires?
Or did did I get that quote confused?
Leif
They do use 13s.
WOW! Lots of interesting info here. Mmmkay though. I have a question. My 94 GSR wheels with Nitto 555R’s weight only 3 pounds less than my 18" Shu 4’s with Toyo Proxis tires on them, both with spent tires. Will 3 pounds really affect my performance that bad? When I autox on the 18’s then put on the 15’s, I generally only lose about 2-3 seconds off my time. Now, I like the way the car drives a lot better with the 15’s, hands down, but the looks of the 18’s I love, and the drive isnt bad enough to make me wanna get rid of them. Are these 18’s that I have on really stressing all the rest of my suspension that much worse than the 15’s do with only a 3 pound difference?? Sorry if I sound like a dumbass, but Im just having a hard time understanding this. I understand the contactpatch stuff though. thanks again Marc, your knowledge is always a very welcome thing as far as Im concerned. Damn, I really wanna go racing with you sometime!
Originally posted by MrFrost
They do use 13s.
W/ what series tires? How do they clear their big brakes w/ such small diameter wheels? It would make sense to use 13" wheels if you used low profile tires which would give you an advantageous gear ratio for acceleration.
Leif
Z06 had 17" magnesium wheels its first year, this year i believe it has 17" both too. saw that post earlier just wanted to comment
Originally posted by shenrie
WOW! Lots of interesting info here. Mmmkay though. I have a question. My 94 GSR wheels with Nitto 555R’s weight only 3 pounds less than my 18" Shu 4’s with Toyo Proxis tires on them, both with spent tires. Will 3 pounds really affect my performance that bad? When I autox on the 18’s then put on the 15’s, I generally only lose about 2-3 seconds off my time. Now, I like the way the car drives a lot better with the 15’s, hands down, but the looks of the 18’s I love, and the drive isnt bad enough to make me wanna get rid of them. Are these 18’s that I have on really stressing all the rest of my suspension that much worse than the 15’s do with only a 3 pound difference?? Sorry if I sound like a dumbass, but Im just having a hard time understanding this. I understand the contactpatch stuff though. thanks again Marc, your knowledge is always a very welcome thing as far as Im concerned. Damn, I really wanna go racing with you sometime!
Shea, its not really the weight that the issue well it is, its more of where the weight is, more mass farther away from the center, the more that its going to hurt performance and braking, if you want to see how this works, get on a chair that spins, and twirl yourself around, feel the difference when you stick your legs straight out and when you put your legs in near the center of the chair. Same mass, but in different area’s.
Here everyone, read this
http://integra.vtec.net/wheels/lightwheels.html
and this
http://integra.vtec.net/wheels/rotation.html
here is some wheel and tire weights
http://integra.vtec.net/wheels/wwd.htm
HTH
Ben