mconnell wrote:rhyang wrote:As I understand it with subaru AWD you have to run all four wheels as closely matched as possible or else the differential may fail prematurely.
I think that is a scam by tire retailers to sell more tires. If that were the case, failing to rotate tires or failing to regularly check tire pressure would cause the differential to fail. So would a lot of driving on windy roads.
I just had to replace a tire and wheel (huge lag bolt/screw in the Home Depot parking lot) and got the whole spiel from the local tire place. I have my dealership do the premium oil change and there is tire road hazard insurance included with as long as you let them swap oil every 6 months. I called them and got the same story about tire diameter... I let the service guy finish and then told him I had the insurance. He didn't bat an eye or change his tune at all - I got 4 new tires at no cost except the oil changes.
It seems to me if this were scam that the dealership/service center would be hesitant to give away $1200 in new rubber if they could avoid it.