i have had my sf winnigns for about 8kmiles now, and i know the t1s is supposed to be a 20k mile tire although somehow i doubt i will get anything near that. should i have my rear tires removed and rotated beacuse of the rear camber discrepancy with my tein springs so that i get an even wear as opposed to the uneven inside to outside wear that i am getting now? would this rotation add more miles to my tire life?