So I got a question. my rear tires wear stupid fast on my g8 . I’ve owned the car for 3 years and I’ve gone through 3 sets of tires in the back each year it’s getting to be ridiculous . I have 275/30/20 in the rear . And 245/35/20 In the front . I’ve tried expensive tires and I’ve tried cheap tires , and they wear equally as fast. Front tires are fine though. Getting a little low but in 3 years that been just fine . I don’t do burnouts or donuts. And I only get on the gas occasionally . Why are my rear tires wearing so fast? If I drop my rims to an 18 or 19 will that help ? Not sure what to do .