Tires are rated to 55k miles. We only have 41k miles and tires need replacing. Tread wear is much less than expected. Most of our car mileage is highway. That being said we should have been able to reach at least 50k miles before replacing. I personally think Michelin is over priced and over rated. Do research before you make a tire purchase. I'm going with the Yokohama 740 GTX. ...4.9 out of 5 customer rating and good unbiased reviews plus this tire is about $150 less per set than Michelin.