Originally Posted by DaveGS4

The impact socket sets you see are most often specific for air tools. A cordless impact gun will take normal sockets and extensions (you'll want to notice if the gun is 1/4 or 1/2 inch drive, just like you would a normal socket wrench).

Unless you're going to be at a track or car shows taking wheels off/on all the time, you'll do just fine on your street car with a decent torque wrench. Perhaps a breaker bar if you have trouble getting the lugs loose. It's much cheaper than a good impact gun and you'll have a lot more uses for them.

I'm not certain on RX specs, but my wife's BMW (which is a track car and we take wheels on/off all the time and use this impact gun which would be severe overkill for you) they get torqued to 90 ft lbs. I've seen some OEM at 80 lbs and others at 110.