Quote:
Originally Posted by oldskewel
I would definitely re-use them on my car. I recently did that actually, on my 2001 with 203k+ miles. I'm in CA with no rust issues.
An additional thing you can do to give yourself confidence that no plastic deformation has occurred is to see if you can easily thread things together with your fingers. Plastic deformation will be uneven, making that impossible over a long depth.
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That's a very good test. Especially when you can use a new nut on an old bolt.
Suspension bolts are usually on the order of 2x safety factor. A 12mm bolt has a clamping force of 5T. Two means 10T. Just shy of 8T@ sheer force each so the brake caliper can withstand 16T of sheer force that is a lot more than the tire can apply in perfect conditions.