oldironfarmer
Well-known member
Back in the good old days lug nuts were more interesting. Chrysler put left-hand threads on the driver side wheel studs and right hand threads on the passenger side. Broke a stud on my Plymouth trying to get the front wheel off on the driver side.
I didn't use a torque wrench on lug nuts when I couldn't afford one (before Harbor Freight). When I got a car with "alloy" wheels it became more important. The different expansion rate and wheel thickness at the studs made it more important/critical to get them torqued tight. Torque spec for aluminum wheels on the PT Cruiser and '87 Corvette is 100 ft. lbs. (the Cadillac is 140 ft. lbs.). Torque spec on the '72 Corvette stock steel wheel is 85 ft. lbs. Most of my local tire stores try not to snap off the studs. Not their fault if a wheel falls off -- they only do tires.
Ford trucks, and others, also had left hand threads on the left side. Usually if you see a block 7 on the end of a stud you need to roll the wheel 180 to see an L. They're not always marked. It's good when one won't come loose to try tightening it. Even if it's right hand threads that can help it loosen. But you can usually see the end of the thread if you look close and determine the proper direction.


). Don't beat yourself up about mistakes. We all make them. You learn more from them than doing everything right. 

