Are you curious if you are torquing the lugs on your vehicle to the right spec? Not interested in paying hundreds of dollars for a tool that you use three times a year? Do you change your own winter tire package out in the driveway?
This adjustable torque wrench is a perfect solution. When I broke my Craftsman wrench I needed on the fly and didn't have time to run to Sears, I grabbed this one at work and was VERY impressed. First of all, it was half the cost. Secondly, it was made especially well for the price. It was perfect for the job, and even came with an extension.
It is vitally important that you have your lugs torqued to spec for your vehicle. You wouldn't want your new OZ Racing wheels for the BMW M3 flying off with your hot Michelin PS2 tires mounted up would you? That would be tragic!
Also, temp changes, road bumps, aggressive driving, anything that puts extra stress on the wheel can cause wheel torques to change and eventually loosen. It's a great practice in the PRE-FLIGHT procedures to periodically check your wheel lug torques and this is the perfect way.