Planning the next
AO Silver Member
Join Date: May 2007
Location: United Kingdom
First of all, he's talking ******* about the length. If they were too long, they'd be preventing the disc from turning. Which means you wouldn't have been able to drive there or back!
Rust on the head is of no consequence. It will only be surface rust.
One of two scenarios -
a) The bolt was already weakened and the fitter this time finished it off
b) The fitter used excessive force to tighten the bolt. This is my favoured option.
Most tyre places that do not use torque wrenches over tighten. The torque only needs to be between 83 and 103 Nm for alloy wheels and that isn't much. The crude bolt wrench with the spare wheel should be able to loosen off the nuts.
If you're feeling like some fun, go back and put the fitter on the spot and ask him what torque figure he used.
To remedy the situation. In an ideal world, the tyre place should remove the broken stud and replace all 5 bolts as you don't know if the ape has damaged all of them.
If not, there are two ways to remove.
1. Drill a hole in the broken stud and use a stud extractor.
2. Get someone with an arc welder to weld a nice fat welding rod to it and use the welding rod to turn the stud.