Just an observation. This is on my 84 T Type. If I hold the foot on the brake and press slowly on the gas it starts burning rubber at about 3 ~ 5 PSI with new tires. The tires are stock size with original rims. They are cooper cobra GT something. They look very agressive. Anyways, when I'm trying to race at a light & do a powerbrake launch I can only go up to like 1 ~ 3 PSI then launch with a 2nd gear scratch every time. The only mods that I have are below. I alway here people saying they are taking of at like 7 ~ 10 PSI when they launch but I can't seem to do it because it rips them up UUUUURRRGGGGGGHHHHHHH and smoke everywhere. I guess you all are probably going to recommend better tires but I think these are good for daily driver.