i wanna kno if i cud put 255/40/19 on a 98 i30... i had on 20s b4 but da gas mileage and speed had to be sacrificed... so i got 19s but the tires now are 235/35/19 in the front and 245/35/19 they ride ok but the sidewall is way to small for nyc rough roads... i need the most sidewall i cud possibly get without compromising the turning potential cuz da fenders aren't rolled