I would suggest 18's at least. The 17's aren't that big of a step up. I regret only getting 17's but they didn't make mine bigger.

 

Yep. They're both 17".

Nahh. 18s just isn't my style. Lo-profile tires suck you have to worry about bending the rims, I prefer some sidewall. The 17s look perfect IMO.

 

To each his own, but I don't really see how you could bend a rim with 18's. Its not like you would be running a small sidewall like with 20's.

 

My brother has bent rims on whatever the stock '04 grand prix gt size is. Also with 18s I'd be running the 45 series and on a 20 I'd be running the 35 series, with the 17s I'm running on 55 series. The 55 series is good if you ask me.