Snake_s2k

Hi,
I should change my tires on a set of stock wheel for track use. Till now I used standard 215/45 17 and 245/40 17. Now I'd like to test:
225/45 17 and 255/40 17
or
225/40 17 and 255/35 17

Which solution should be preferd?

thanks

dc2-2-ap1

225/45/17 and 255/40/17

deepbluejh

^^ Correct

RedCelica

+3

AndrewLin

second set of numbers is gonna be pretty thin in the sidewall, so the first...

Snake_s2k

2 questions about first solution:
1)Should I loose some acceleration?
2)Should higher "Aspect" affects handling?

http://www.willtheyfit.com/

Thanks

ZDan

Who makes 225/40-17 and 255/35-17 rears?

There *are* (or would be) definite benefits:
1. 1/2" lower c.g. (without screwing up suspension geometry)
2. ~5% "better" gearing (equivalent to about a 4.30 diff)
3. ~5% improved braking response

Downsides include susceptibility to road hazard damage to tires and curb damage to wheels, less ground clearance, slightly harsher ride (depending on tire make/model).


I ran 225/50-14 track tires on the Z, vs. 225/50-15 street tires for the "benefit" reasons listed above (and they also all fit in the back under the hatch!).

S2K1DAY

How low could one go on 225/45/17 and 255/40/17 with no mods? I'm looking at maybe going with Swift springs sometime in the future. Thanks!

dc2-2-ap1

Depends on the offset of the wheels. If you are running stock 17" ap2's (v1,v2 or v3) you will be fine lowered on swift springs.