Tyre Question

[SXCSKY]

hey guys

Does it matter if the profile of my tyres are different on the front to the back....i have 255/40 on the back and 235/45 on the front.....i know its ok havin different widths but is it haing 40's on the back and 45's on the front

thanx guys

[hungry6]

on a gtst , nope

i been sus plenty of time regarding my semi slick on rear and 901 front same size as your,

unless it's an awd then u be in trouble.

[IanH]

As far as I know it's fine becuase your trying to keep the overall circumfrence the same but the rear is wider so it has to have a smaller sidewall.

Click here for a tyre calculator to help you see what happens when you put the same profile on both front and rears. Just type in your front and rear tyre sizes and see the difference.

[sewid]

From the factory the GTS25t Active LSD Specification came with 205/55R16 on the front and 225/50R16 on the back.

The factory does it, and its fine.

[siksII]

yes it is fine, because the 40 or 45 rating is just an indication of a ratio of the height of the tyre wall compared to the width of the tyre. So obviously if 235:45 and 255:40 mean that the tyre heights will be similar. if both the tyres were the same then the ratio would mean that one tyre had a definetly higher side wall.

i have the same tyre sizes as you btw, and they are fine.

[benm]

Click here for a tyre calculator to help you see what happens when you put the same profile on both front and rears. Just type in your front and rear tyre sizes and see the difference.

Thats an excellent site, thanks.

[Sumo]

i have the same setup, 245/45/17 on the front and 255/40/17 on the back and have no worries. Just dont do what i did and get ripped off for a pair of bridgy S03's 255/40/17 ($450 ea.) I thought he quoted me the price on the pair - not each. :bonk:

[slip]

ouch, i paid $450 for 2 x 205/55/16 S03's, and that was with a discount. spensive bloody things.

you must have different profiles with different widths.

[siksII]

s03s are a good tyre though.. good tyres = pricey. especially huge sizes like 255s.

i just got a set of pirelli p6000s,, 255/40/zr17 for $90 each.

catch= second hand. one was at least 95% there.. the other was 30% gone on one side and 50% in the middle(done care about that part too much so yeah had to make sure the new edge of that one was on the inside.

but still. it would have cost me double 180 to get just one good new tyre. so even if i use them for half as long its good value

[sewid]

Yeah i found some nearly new second hand 265/35R18 michelins for $150 each the other day but when i went to buy them the customer called and complained that he wanted to swap his old tyres back.

They were supposedly off a ferrari

[Sumo]

slip, that sounds a good price you got, I was told $380ea for 235/40/17 S03's when I want to do my steers.

Sumo