[s-cars] Wheels: 17 vs 18

[Tony Curran]

I looking at getting new wheels soon. I'm leaning towards 17 inch but the
tire of choice Sumimoto HRZ IIIs only fit an 8" width wheel which isn't a
17" size.
 
Should I move up to 18 just to fit the tire of choice? What is ride like?
Recall I have Eibach and Bilstein setup, so concerned about the lower
profile. Also Ottawa roads ain't that great.
 
Tony
96 S6