Thread: 18's on a 370z
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Old 12-31-2017, 11:41 PM   #553 (permalink)
Zcutty69
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Location: NC
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Quote:
Originally Posted by Hotrodz View Post
It is all about how far you want to chase that rabbit down its hole. You can buy two piece light weight rotor and reduce unsprung weight even more to negate the weight of the tire. Depending on what you are looking for if you go with a smaller diameter tire like a 295 or a 315 it will effective have the same effect as changing your gear ratio and the car will accelerate faster in short runs which is what you want for tracking and canyon runs.

True. Also should have mentioned i have 4.08 gears ready to install. And I will eventually add lightweight rotors a little later down the road. Did some quick calculations on willtheyfit.com and a 305/35/18 has a diameter of 670.7mm vs 675mm for my 275/35/19 I'm currently running. More rubber and comparable diameter sounds good to me ? That and a summer 18" tire is probably lighter then my current 19" all season tire lol. Guess I'll start my search for a set of rpf1s.
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