06rallyss

im sorry if this is a repost i looked and didnt see anything i am looking at getting a set of nittos but the only size that fits the stock rims is 235/40zr discount tire says that theyll fit has anyone used this size yet and what were the results

bumbed

djcasper_bpm

shouldnt have any problems

NKs07CobaltSS

I was told that anything over 225's will rub but thats only what i was told i don't know that i beleive i sure would like to know for sure i want 235 or wider if posible!

06rallyss

who told you that they would rub

chipmonk212121

you should be fine. those are only 1mm larger than the stock tire or something like that, and only 1cm wider on each side.

06rallyss

bumped

Doc

badmunkey had a set of 235's, search for his threads on it.

cybcow

You can see my size in my sig. No problems at all.

avro206

correction. 20 mm wider. 215-to 235--or 2cm total.

06rallyss

thanks for the help fellas

Mike06cobalt

This might not quite be on topic, but rather than start a new thread....

I'm driving on the stock SS/SC rims and I need summer tires. 45/215 is the stock size of the tires I believe.

My question is, can I put 225 wide tires on a 215 rim? Or do you have to match the tire width exactly with the rim??

cybcow

Look in my sig, actually go to the for sale forums and look at my car and you can see the tires on the stock rims.

hope that helps

Mike06cobalt

Doesn't help really. Sorry I don't know jack about tires.

I understand that it's feasible to put larger than 215 wide tires on a 215 rim. But what are the implications? Are they more likely to malfunction under extreme cornering? If so, will I get flack when i try to warrenty them becausee the rim size didn't match the tire size?

I've been told that some companies won't mount tires unless they match the rim size. There's gotta be a reason for it.

Archie

The rims are 7" wide. Technically you should have a 7.5" wide rim for 235's, but it will fit no problem. The vehicle can actually go as wide as 245/40R18. But you definately will need to upgrade to a wider rim for that. Bare minimum of 7.5, but 8.0 would be safer.

The malfunction, is that the tire actually bows out a little more than it is supposed to. You can add a couple of psi to straighten out the sidewall a little bit, but the overall setup isn't recommended if you can get the correct size rims. The problem occurs when you corner extremely hard, under very rare circumstances, the tire will bend so far on the rim, that it will pop off the bead. The tire could also be pinched between the rim and the road if you are using a tire 245+ on a 7.0" rim. The tire warranty is only a roadhazard warranty, so once you change tires, you will get a new warranty with the new tires from where ever you buy them. Anyone should mount them. It's not an issue if they wont mount them, its that if the tire is too wide for the rim, it won't bead up properly when they go to inflate the tire. But 235 should be fine.

To ease your mind a little, in two weeks, I am gonna get a 17x7.5" rim and put on 245/40R17 G-force sports. But I am only gonna do that because there really aren't any rims I like in 8". There are so few.

avro206

what he said ^

the tires are 215--thats not a rim number. Rims are 18X7 (7" width) for S/C SS

Mike06cobalt

Ok right, so 215 tire equates to 7" width rim. So just to clarify, putting a 225 or 235 tire isn't dangerous at all on the stock rims, which are 7" wide? And I won't run into road hazard problems with the tire company by not matching sizes?

Thx for the info guys.

supermantxz24

they will fit i have them on my car

Archie

The 7" wide rim is actually designed for 225, not 215, GM did the 215, for that slightly stretched look, which I hate. As many people have said, 235 will fit no problem.

The warranty: 99.9% of the tire shops out there won't even notice if the rim is slightly too small for the tire. Now if the rim is too large for the tire, it will take a ton of air pressure to get the bead to seat. I know from experience. We have to use the auto inflate at 40lbs, the mounter at 70lbs, and the cheetah at 150lbs, to seat certain high performance tires on vehicles. Such as the Viper we did a couple weeks ago.

Just put on the 235's and don't worry!!

Give me two and a half weeks and I'll show you what 245's look like on 7.5" rims.

Mike06cobalt

Awesome, thanks Archie.

avro206

I know you got your answer by now but I jsut want to add a little to that.

A rims width does not equal an exact tire size. Like a 7" wide rims does not = a 215 tire.

A rim width can safely accomodate a range of limited tire widths. But you can only go so wide or so narrow.

Mike06cobalt

Cool. I'm looking at these on the stock 18s:

Hopefully size 235/45/18, seems to be hard to find this size.

BFG g-Force T/A KDW-2 or
Kumho ECSTA SPT

ItalianJoe1

iTrader: (10)

I just upsized to a 235/40/18 KDW, and it looks great. No rub, no problems. A little wider, but not too much. Don't go with the 235/45. That is gonna be a bit taller than stock, and will look a little large I think.

Mike06cobalt

Actually i saw a pic of a black SS with 235/40/18 KDWs and thought the 45s might be too large...i think i'll do the 40s

The stock pirelli's ARE 215/45/18 right?