I agree that a 20" wheel will to give you a harsher ride, due to the sidewall necessary to have clearance under fender. This is a subjective thing though, so you should ride in a similar car with low-profile 20" tires to see for yourself.
Personally, I think an 18" wheel is perfect for a just about ALL Stangs, but this is just an opinion and MANY like 20"s on an S197 ('05+ Mustangs) Take a peek at my
Choosing a new tire thread a bit later on tonight. It is now about 6:00 Wednesday and will be working on profile hight a bit later after dinner. I have lots of info on tires and pros/cons of a given type.
You will have very limited tire choices in a 19" wheel and a bit more in a 20" wheel. You will have TONS of choices in an 18" wheel, so you need to decide.
Need to have dinner now, pepe my thread later tonight
Jazzer
