well I have had my 4.10's for about two weeks, and I love them it pulls alot harder, they are alot more fun to drive with over the 2.73's! But I do alot of highway driving, so it's killin me in the wallet. Plus I don't like to hold my car at 3000rpms for a while, i doubt it will wear anything faster, I just don't like to beat my car :dontknow: But just a warning to other people decideing what they wanna stuff in the rear, if your worried about if it may be too much gear maybe stick with the 3.73's. It sure does pull hard as hell though!!!