Mine is set up with 16" on the front and 17" 235 on the rear. I'm sure there's a little wheel spin in first and second gear but it's hard to detect with sticky tires. They don't squeal. Axles are 2003 Spyder and Matrix. The car is exactly 190 pounds heavier than stock - same as carrying a passenger. The Spyder brakes work perfectly for street driving. Besides, stock Spyders can out-brake any car on the road. You might have different experience if you race. You didn't ask, but the stock radiator handles the V6 perfectly. Even in South Georgia summertime. Again, you might have different experience if you race.