well my friend's eg with a b18c swap ran an 02 rsx type S with i/e. beat the rsx by 1 car.

my other friend just got his b18c w/type r manifold. and still running 175 doughnuts. he pulled hard on my friends 06 rsx type s i/h/e. (confused yet lol)

anyway.

im guessing that the lighter wheels gave him the advantage. (tiny 175s) despite probably crappy traction.

my question:
does reducing the weights of rotational mass ie. wheels. really make such a significant difference as like getting gears or what not?

i know it makes a difference but a dramatic one? lets say.... switching from 17-20lbs wheels to 15lbs wheels?

ps. used street encounter as an example.

 

General rule of thumb is a 7:1 on rotational mass. So if you know 2LBS off each tire, and 2LBS off each wheel, that's 16LBS off of the cars rotational, which is about 112LBS of feel. You should be able to feel the difference.

I came from an AWD crowd with heavy OEM wheels, so it was possible to drop 10LBS a corner, plus 25LBS on the driveshaft, so without shaving major weight, the car drove like it was 500LBS lighter...

Rotational mass is a major issue, throw a 8LB bowling ball and a 10LB bowling ball, see if you can tell such a small difference in weight

 

I love show look, but I used to run 225/40-18 all around and each weight in about 21 lbs. and I will never ever run anything weight more then stock again. Acceleration and handling is night and day. Even if you run same weight, but bigger wheels, performance will still suffer because of rotational mass.

 

didnt realize lighter wheels made THAT much of a difference... surprised not everyone is going lighter wheels