Went to have my summer tires (original Michelin's that came with my P90D) put on my Model X and tire store said treads were too worn down and I needed 4 new tires. I said ok to a replacement and came in today to have the new tires put on the car. At lunch, I took a look at my new tires and discovered that the tire store replaced all 4 tires with identical 275/45 R20 Michelin's similar to those that came with the car. The standard MX configuration has 265/45 R20's on the front wheels. All 4 of my new tires are identical 275/45/ R20's. Is it ok to keep 4 of the same tires on the Model X? The car is riding fine but didn't want to risk an accident of something by riding on the same tires on all 4 wheels of the Model X. Couldn't find an answer to this question elsewhere. OK to ride on 4 275/45 R20 summer tires? Thanks!