I have summer tires. When I go to work in the morning (cold) one of them thumps. After driving a bit, and the tires warm up, the thumping stops, and there is no thumping in the afternoons coming home. What could be causing this? Should I buy a new tire? I‘d hate to since the tire still has great tread. On a semi-different subject, if I do buy a new tire, should I buy 2 or all 4. Again, all the tires are in good condition. (Did the coin test with both a quarter and a penny)
you prob have a broken Belt.
you my friend have a bubble in your tire, bring it to a shop see if they think you need a new tire!
Sounds like the old nylon tire thump. Caused by cold tires after sitting all night, warming up while driving to work and then not as bad in the evening while the tires are still somewhat warm. Have someone follow you and watch your tires to make sure they don't wobble (broken belt) or take them to a tire place and have them checked. It may just be cold tire thump.