Finally buying my first set of tires for the SS. 46,000 miles on the car. The Pirelli tires last long when you only use them in the summer time I use my all season 16’s October – May.
Anyways, what size tire should I get for my new 18x8.5? I was thinking 235/45/18 but my selection in this size is limited. What’s a good summer only tire for these wheels?
The car is not lowered. I want /45 to fill the wheel well like the stock tires do

 

Falken Azienes RT615.

 

Fuzion ZRi has 235 40 18, thats what I went with

 

You have 235's on 7 inch wide wheels?

OE size is: 215/45-18, so that's why I was thinking 235-45-18 for my 8.5 inch wide wheels

 

Nice rims man. You want to sell the stock wheels?

 

Thanks. I already sold the stock wheels, I will consider selling my GM accessories wheels in my avatar if you are interested.

 

235/45 will rub.. do 235-40.. and damn u got a lot of miles out of the stockers... also i would go with kumho ecsta MX tires.. very grippy tire for a good price!

 

i got a 225/40/18 on my car and i like it. plus there are way more tire options for that size

the shop i work at buys alot of tires from Tire Rack.


http://www.tirerack.com/tires/Compar...8&startIndex=0

 

yep they fit great no rubbing at all and im lowered.
https://www.cobaltss.net/gallery/fil.../newtires3.jpg

there not streched that little lip is just to protect the rim from curbs

 

i found this site too.


http://ssl.delti.com/cgi-bin/rshop.p...p=Summer_Tires

 

Why will they rub? My car is not lowered.
The stockers were only on in the summer, so probably half of those miles were on my 16's

 

sweet thanks! These look good http://ssl.delti.com/cgi-bin/rshop.p...se=&LoadRange=

 

I say get 225/40/18 and lower it

 

225’s will be stretched to hell on 8.5" wide wheels don’t you think?

I don't want them to look getto like this

 

Im am not positve, what was dead zen running on them?

I am running 225/40/18 on 18x8 rims.

 

235/40/18...but they rubbed...he was lowered
here are his pics: https://www.cobaltss.net/gallery/bro...searchid=15884

 

So you are scared to lower yours now lol.

Found a good answer on Tirerack

225/40/18

The 225 indicates this tire is 225 millimeters across from the widest point of its outer sidewall to the widest point of its inner sidewall when mounted and measured on a specified width wheel. This measurement is also referred to as the tire's section width. Because many people think of measurements in inches, the 225mm can be converted to inches by dividing the section width in millimeters by 25.4 (the number of millimeters per inch).

225mm / 25.4 = 8.86"

so you shouldn't have any problems fitting them on a 8.5 inch wide rim

Oh and you should still be able to lower it

 

You running the same rims that Dead Zen has? What kind are they? i really love those

 

American Racing Rogue's

 

I see a lot of guys who don't like the selection of wheels available to us Cobalt owners. 18x7 with a 112 bolt pattern isn't exactly a popular wheel. I personally like the wheels that came on the car but for all others you might have another choice. There is a drive train shop in NC that MIGHT, and I stress MIGHT be able to fix you up with new hubs to convert the 110 pattern to something more conventional. Google "The Drive Shaft Shop". This guy made axles and new hubs for my LS1 powered Fiero and I think I saw his name mentioned in Cobalt circles. BEWARE!! Frank would much rather you write an email than a phone call. He really gets into his work in the shop. But I don't think he'd stick pins in a little doll if you called him once just to find out if a long email would be worth the effort.

Go for it and good luck.

 

You rock! Can you post a large high res close-up of your wheel and tire?


here are dead zens 235's...do they looked a bit stratched or is it me?

 

I am at work so hopefully this is fine

 

That pic was taken when he was running the stock 215/45/18 rubber on them. They were VERY stretched! You can read the #'s on the tire if you look closely.

 

Yea you can, I just noticed that

 

225's look stretched on an 8" wheel, so I wouldn't put them on an 8.5" wheel. They also leave a larger wheel gap than 235/40's.