For those of you who went up to larger 18" wheels, what tire size did you go with? Tire rack recommended 225-40-18, less sidewall = rougher ride right?

 

That's what I'm running. Yea the ride is a little harsher than the stock 215/55R16's, but not by much.

I will probably either go with a 225/45 or a 235/40 with the next tires. Those will be a little taller.

 

225/45 or 235/45 on 7'' wide wheels

 

235/40/18 on 8" rims with a 37mm offset

 

There are different sizes for different applications! The rim width and ride hidth also play a part in what should be reccomended for an 18" wheel! Is it an 18" x 7", 18" x 7.5", 18" x 8" or 18" x 8.5"? Wheel Offset? Does your vehicle sit stock or is it Lowered and if lowered how low is it"? Would reccomend the two sizes Solman98 recommend, 225 x 45 x 18" or 235 x 40 x 18"! The 225 x 40 x 18 Could be used on a 18" x 7" or even a 7.5" wheel but you better have a mega lowering job to remove the wheel well gap! An 8" or 8.5" wide wheel should start considering a 235 x 40 x 18" wide tire! We installed 225 x 45 x 18" on the 18" x 7" wheel and are "Happy" with the ride and stance all the way around! It could sit a little lower but ours is a dailey driver !

Good Luck,

 

lowered with goldlines, waiting for del. of gunmetal 07 cobalt SS wheels
Thanks

 

A Great Tire at a Great Price from the Tirerack:

http://www.tirerack.com/tires/tires....e1=yes&place=2

Your HHR should sit lower with the Gold Lines which would look nicer IMHO!



Hope this Helps and We Love Pic's,

 

Yeah, definitely get some pictures. I'm running the same size tire as DLVRNIT with the same wheels. 235/45 would probably look a little better on these wheels though.

 

235/40/18 on mine. I love wider look. I also had to use wheel spacers though only because I have Pontiac solstice wheels, which have a 52 or 55 offset I can't remember. With my last wheels I had no problem with this size.

 

Solstice Wheels 18x8 and hav the 225 45 18. Same as a mazda rx8 or a nissan z on the front