Going from 19' to 20'?
 

What are the loss? (Economic, performance, etc?)

I'm doing this to fill out the huge wheel gap + ride height.

Any thoughts?

:stirthepot:

I regret going 20"s. Sure they look great, but it's a night and day diff VS the stock rays. Acceleration sucks!

Duly noted. I guess the lack of tire sidewall accounts for that. 19's and a drop it is. :driving:

Does it really affect acceleration that bad?!

Depends on how heavy the 20 inches are.!

19" usually are heavier, so u will loss some fuel economy there. 19" tires are more expensive as well.

Advantage, probably look.

I noticed the diff immediately, and the dyno confirmed it.

298whp w/ ART pipes, M370, Gemini exhaust, OEM Rays @ 77 degrees.

291whp w/ above plus Stillen G3, Uprev tune, 20" MS1 @ 95 degrees.


Tuner speculated I lost 15-20 hp due to the wheels.

I would hate to see the decrease in performance.

Thanks guys !

Some 20"s are lighter and stronger than that of 19" rays

Whaaaa? How did you make that assumption?:ugh2:

if i was getting 20's it would be solely for dressup so 3pcs wheels and probably looking at 28-30lbs each.

that's a significant bump in unsprung weight. i wouldn't do it on my Z.

What tire sizes do you guys recommend for 20" rims for fronts and rears? Lets just say width is 9" and 10".

tires size
 

If you want to fill the gap.I have 245/35/20 for front and 275/35/20 for rear.I happy with the result but it will made rear wheel look a little small. I recommend black or gunmetal wheels color....No drop or you can run285/30/20.I love the look of 20"