I have a 2019 Performance model 3 and picked up a nail in my rear tire. The tire can not be repaired so I have to replace the tire. The rear tires are worn more than my fronts since the P3D gives a little more power to the rear tires and I never rotated them. My question is should I just replace the rear two tires or replace all four tires. The front tires have appox. 6-7/32's left on them and were 9/32's when they were new.