I read a test in a car mag that replaced the stock SS rims with lighter weight aluminum wheels. The gain was .1 seconds in the quarter. I can't remember what mag it was. I have a set of 16" wheels and 26" tall tires I run at the track that gain me the .3-.4 seconds that others were referring to.

 

I see, well if .1 is about all that I would gain then I just can't justify spending the money on some wheels. Guess I just need to do some more mods.

 

in my old 94 , i went from billet 20's with 255/55 nittos to stock 15's with a 295/50 in the back and shaved 4 tenths it was awesome .

 

the closer the weight is to the center, the faster it is
the less weight you have rotating, the faster it is
the less weight you have, the faster it is

so the best example is a lightweight truck with small light wheels, and tires with lots of sidewall

 

In order for this to hold true, you need to make sure the tires on the lighter/ smaller rims have good traction. I used to go through the trouble of taking off the 22's and slapping on the stock rims with Generals to save .1 in the 1/4. Now, I run my 22's all the time and can cut conistent 2.1's.

However, my 22's probably weight as much as a cast 18 or 20 inch rim.