we fought tire shake that got so bad it broke the driver's door a week ago in test/tune and only running 7.40's. We tried the 3rd set of tires Saturday and finally got a decent time slip without shake/hop. The existing and 3 time Pro Street champion actually gave us the tire tip on Saturday that worked
...he said he didn't want to be racing us in the other lane with our car hopping all over the track. lol