Gs_350z

I don’t think there will be a problem, but would appreciate a little input. I have a chance to buy new 235 (/45/18) Michelin Sports and thought they should be close enough to oem 225s to not be a problem. Thanks for any replies.

travlee

iTrader: (8)

its a little taller tire

Gs_350z

Trav, thanks so much for the reply and the detail. Really appreciate it!

travlee

iTrader: (8)

do you have tcs or vdc, because that taller tire may affect it. @MicVelo is better with this stuff and he will throw in his tire knowledge

Gs_350z

Well, somehow I’ve been demoted to a “new member” status so my profile image disappeared. Lol. I’ve got an ‘07 Enthusiast, so it does have TCS. Thanks again, Trav.

fatjoe

I don't know. If I were to go with 235 on the front, it would be a 235/40.

travlee

iTrader: (8)

1.5 inches short height wise, and almost 2 inches shorter in circumference ... not sure how that would play with tcs or vdc if the car has it

Gs_350z

Thanks, guys for the replies. I’ve decided to just stay with the stock size.

fatjoe

Oh. I didn't think of it that way. I was thinking of the visual profile.

MicVelo

Just for future reference, there are two 18" tires for the front that are "standard fitment": 225/45-18, 245/40-18. Note Nismo 18" front uses the latter on 9" wheel.

One or two sizes for 19" front wheels: 245/35 or 255/35-19

You can play with sizes - like doing 35 aspect tires on 18s but make sure they are both 35 aspect ratio, e.g. 245/35 and 275/35 to maintain the F/R size/wheel speed delta at 3% +/- 0.25% on TCS (sorta) and VDC (mandatory) cars to avoid unwanted triggering of traction system(s). But honestly, don't see any practical reason to deviate as such given the shorter height/smaller diameter tire creating wheel gap and the steering response gain is not that big of a deal. Just sayin'.

Gs_350z

Thanks, Mic for the reply.