Some people will tell you they can really tell a difference. The guy that works on my car has installed a bunch of them, he says you can not tell a difference until you are almost to the limit. It basically helps your car not to push as much at the limit. A better upgrade would be sway bars (but also more expensive) or perhaps strut mounts or the like (help protect your investment). So if you auto-x and/or track your car ever, then it would be worth buying because our cars really do push a lot through corners on tracks/auto-x. If not save if from something else. Because you shouldn't be driving fast enough on the street to make use of it.