Loose wheel; brake problems; bad bearing; something else? Whatever it is it's serious. Check it right away.
Answerthe thumping you hear are the potholes you drive over and drp into that's why you don't hear it when you press the brakes.Brakes help a bicycle to stop, of course --- but do you know why? it's because brakes use friction. When you squeeze the brakes, rubber blocks press against the wheels. The friction between the blocks and the wheels slow your bicycle down.
Press the brakes or down shift
hypothisies
hypothisies
Bad logic
theory
Wishful thinking, as a trapped mouse is cheaper than getting a garage to sort your brakes out - probably the pads need replacing.
You probably have a warped rotor on one or both of your front wheels.
when you're in gear, the engine tries to move the wheels and the brakes hold it still. this suppression from the brakes, combined with frictional losses through the drivetrain, lower the engine RPM's. When in park, the car's wheels aren't being driven therefore you don't need to press the brakes. tjhis lessens the load on the engine dramatically and therefore, engine RPM's rise
Sounds like you need brakes. Have it looked at soon! Or maybe the fact its a Chevy that might be the problem
If a calliper is "hanging", it could be causing the brake pads to press against the rotor and overheat the brakes. You may want to see if the calliper is dragging.
It is wishful thinking. It is more likely your brake pads are worn down and need replacing - an expensive garage job!