I have a 2005 Chrysler Pt Cruiser

Answer: If noise increases when you drive around turns, when in the turn you may hear noise, sound will come from unloaded side, the side opposite the turn or a new road noise pronounced whining noise or possibly a low thump, thump. Whine pitch or thump noise is changed by speed and constant, typically bad over 55mph. You may also jack up on side and try hold the outer tire top and bottom see if you can shaker the tire or get movement, this is also a sign of bad wheel bearing. We suggest you disassemble the hub/wheel bearing and clean out your wheel bearings using cleaning solvent and pressure air and repack them with the correct grease, don't forget to spin them over and adjust the nut properly (consult maintenance manual for number of turn/partial turns after full contact), before installing the securing cotter pin, check owner’s handbook for recommended interval for repacking you wheel bearings. If bearings show any sign of pitting or noise after this operation they must be replaced.  See the other drivetrain related parts we can supply on our website.