Finally tired of putting so hard on the wheels. Really crazy in the pouring rain. Didn't know someone had done this before? I was about to buy threaded bolts. They are better and cheaper. No more needing a balance wheel, no more turning to line up holes you can't see, and hoping the bolt turns without a cross thread. Why doesn't an $80,000 BMW have this standard? I'd rather have them than a tow hook! Bought two bike racks. Pull the two rivets and insert the charms, pull the remaining three rivets. Turn my snow tires on or off. Insert three pins. Tighten the temples and insert the bobby pins. Tighten. Repeat for the remaining tires. torque. I was so upset and cold from the fourth wheel. Now I look like a pro.