My newest purchase for the SI was a set of new rims and tires for the drag strip. I currently have all weather performance tire for everyday driving but wanted something more for the track. I decided to go with drag radials, Nitto NT555r to be exact. I also bout a new set of rims. They are 17 inch Enkei performance wheels. The wheels are 245/45 r17. The Nittos really make a difference on the track.