as far as his rim choice, i believe him when he says the small diameter is bad for the Spec V. I've heard one Spec V owner say that he can start out from a light in 3rd gear, so i know the gearing is very short. plus the powerband is very low for a 4 banger.....180ft/lbs torque at 2000rpm. that's just insane. I think for his particular car, 17s would be a good choice do to the gearing. i myself will be getting 215/45 16s and hope it will work w/ my car. i have to go to 16s for the 215 width hoping that it will make a difference. the weights are about the same for the 15s and the 16s