I just got my spyder on monday night and its an 2008 and we noticed that it is making a whining sound when backing up and even when just rolling back on its own (no brake applied). Does any one have any suggestions on what it could be or what I should do?

I am not sure what condition the previous owner kept it in, it only has 7K miles roughly on it and i bought it from a car dealership who had it as a trade along with a Chevy SSR it came with so i doubt it was worked on or moved once on the show room floor because they didnt know much about it to begin with, I think I knew more hah. Didnt know if its because it had been sitting for a while and not moved or what.

Any insight or suggestions would be great!