I have to get two new tires for the rear. If I use a used tire with 10k on it and buy a brand new tire will it screw with the rear end at all. I know that you have to replace all four tires on a WRX if you have a flat or etc.. Does this apply to the s2k rear diff as well. I tried to look on S2Ki but there were no topics about it. Thanx

 

I wouldn't on this car, the corner balancing would be off. At the very least, do the two front or two rear rule. What happens when you wear the used tire? You'll have to get a new one with the other side now being used...the cycle will never end until you get two new tires.

 

Oh, and to answer your question - no it wont do anything to your differential or anything on your rear end for that matter, assuming nothing is wrong with the used tire. LOL.

 

Ok thankyou. I am just going to buy two new tires just to save me the hassle later in life.

 

good choice... way not to cheap out...