impact guns (wrenches) on porsches

[eightsandaces]

Originally Posted by rick3000

A few years ago, when I first got my Boxster I was having my snow tires taken off and the tire guy used an impact gun to take things easier and stripped the screw holes on one of my hubs. They had to spend about $1200 to replace it. Now if anyone is taking my rims off, I make a point to tell them, "No impact guns."

As lil B correctly pointed out, in most places the gun torque is at the mercy of the inherent air system. I'm sure when you are out of sight, anywhere that repairs vehicles is gunning the lugs...

[Topless]

A couple other points:

Stainless lug bolts are not a great idea on our cars with alloy wheels. There is a high potential for galvanic corrosion which could cause early failure. Stick to OEM quality.

The op discussed really stuck bolts when changing his rotors. This may not have been an air wrench problem at all. The top bolt on our caliper is often frozen in place due to high heat and corrosion over time. It is a common problem and much worse in damp seaside communities or regions with salted winter roads.

Yes an impact wrench is a useful tool when used correctly. Just finish with a hand torque wrench.