What Is The Widest Tire I Can Fit???

[YeA 2jZ]

I am looking to upgrade my rear tires I dont have the money to upgrade to the 20's i really want and I am in need of some rubbers. I am currently running the 255/40/18 that come factory on the IS wheels and let me tell you that those bridgestone tires sux. Gone through like 6 rear sets in about a year, so whatever the rear rim is 8.5 inch wide so I was thinking of going possibly 265/35/18 can I fit that tire on to a 8.5'' rim ? Can I go any wider ? And for the sake of the thread if anyone out there is running a similar tire/wheel combo can you please post some pics

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[Carfreak70]

I don't know too much about this kind of stuff, but dang a 265 on a stock wheel thats pretty insane. I honestly didnt think that would fit....but then again im on a 10.5" wheel and it has a 275 that could easily be a 305. haha Hope someone can fill you in!

[jadu]

265 would probably be the widest you can go. I was looking at the specs for the 275s, and the width for those were 9" wide

[5sp_jzz30]

8.5" wheel stock should fit a 235 or 245. anything wider then that is not recommended.

why do you need such a wide tire? traction issues?

if you are not making crazy horsepower and dont need the extra traction, a wider tire will only add more friction and reduce your gas mileage. also more unsprung weight.

255 should go on a 9 and a 265-275-285 on a 10

[eliteskill]

245 on 8.5
255-275 on 9.5
285 on 10.5

is what i run

[jdmJZA70]

yeah i know its nots recommeded but you could get away with 275 on 8.5 in wheels...hell iv been running 315s on my 9.5 with no issues what so ever...just my opinion tho.

[YeA 2jZ]

Thanks gents

Originally Posted by 5sp_jzz30

8.5" wheel stock should fit a 235 or 245. anything wider then that is not recommended.

why do you need such a wide tire? traction issues?

if you are not making crazy horsepower and dont need the extra traction, a wider tire will only add more friction and reduce your gas mileage. also more unsprung weight.

255 should go on a 9 and a 265-275-285 on a 10

Well if you think that anything wider than 245 on an 8.5 inch rims is not recommended then you should tell the ppl at Lexus that cuz oem wheel/tire combo on the IS wheels is 8.5 with a 255 wide rear ? I am looking to go as wide as i can becasue 1. I am going boost in a few weeks and 2. In need of some rubber and might as well get the best i can now

Originally Posted by jdmJZA70

yeah i know its nots recommeded but you could get away with 275 on 8.5 in wheels...hell iv been running 315s on my 9.5 with no issues what so ever...just my opinion tho.

wow 275 on a 8.5 rims AND u got 315's on a 9.5 damn u got any pics

[aka paco]

you'll be able to fit a 265 on it no prob.

[scviolence]

im rocking 18x9.5 with 275/35/18 in the rear,stock height no problems and if i've got plenty of space to drop....

[skirts]

He had a thread a couple days ago with pics of the 315s it looks good im going to go with that size next time. Ive got 275/40 on tt rear wheels.

[xknowonex]

Personally

8.5 = 235 or 245
9.5 = 265 or 275
10.5 = 275 or 285
11 = 285 or 295

[omidg89]

i had 265s on my 18x8.5 rims you can go 275 as well if u want but thats the widest