Running the ET Street Radial II's (295-45-17/27" tire) Brian. I was leaving the line at about half throttle trying to see how the car would respond as well. I am looking to replacing them with a pair of MT ET Street R series in a 28" (305-45-17). Brian at Finishline says they are making great traction for Terry's 15 before he sold them so I figure for now I will stay with a 17". I just need to sell the 154x10's I have in the garage so I can buy a pair of 15x8's. I also think I need a little taller tire because the car actually shifted into fifth before crossing the line.