Stock rim/lug pattern and biggest size wheels on 07 SGT?

[Chance.316]

So I brought her in to get my tires balanced and was told I have a nail right on the inside border of one of my tires. She's plugged up and holding OK but I'm not comfortable with it so am looking for options. Buy 1 235 and just replace the 1 bad tire, or buy a pair and run 2 tires a little bit wider for a couple seasons before replacing all 4 (I"ve got 23k on them so still a little ways in terms of tread).

 

First off, what's the largest size tire I can get on these stock rims without rubbing. I'd like them all the same size so I'm hoping 255/45 18's? Anyone have experience with larger size rubbers? Brand preferences? I'm an occasional track guy (2-3 a year max) but she's my DD so preferably softer with less road noise. Traffic in Houston sucks pretty bad.

 

Also looking for a full sized spare if anyone has one layin around in the garage. Can anyone confirm 18x8.5 and 4.5x5 bolt pattern? Any offset on stocks rims?

 

Thanks all

[Redlinetoys]

I have a set of 245/45/18 Goodyear F1 tires on the stock wheels. Bigger tires yet would be no problem. I like they drive.

 

My buddy has a set of BF Goodrich 255/45 tires on his. He reports a harsh ride.