Hey Jim, I have an Ingersoll Rand Impact Wrench model # 231c that I used for 10 years and just got the IR 232TGSL called the Thunder Gun a couple of years back and it's an awesome gun for tires. I searched around for all long time, but they always come out with better ones every year or so. I would try looking for reviews on the kind of tool in question because a ton of the dealers out there like snap-on, matco, mac, etc, ect... sometime don't know what they're talking about. They just want to sell you a tool. hope that helps...