There are a number of processes that can make nuts hard to remove or install. Corrosion is usually the main one, but any wear can cause the threads to get rough, which will increase the friction. Just consider how a knife dulls with use. The same sort of thing will give threads more and more friction.

A little anti-seize on the threads is fine. It makes for a more repeatable torque wrench number and helps prevent against corrosion. You can also chase the threads with a tap or a die.

Ideally, you would rather just replace these things every so often, but unfortunately it is a major PITA to replace the studs on an S2000. Replacing the nuts is much easier, but may not solve the problem.

 

i recently replaced my wheels and didnt have a torque wrench or anything, i just used the jack in the trunk... now i know this is really hard to say... but whats the right amount of "tightness" when hand tightening it?

just to be sure, i gave each a little kick to tighten them a bit more.

thanks!

 

80 ft-lb.

If you don't know what 80 ft-lb feels like -- well that should be a hint about what your next step should be.

 

go get a torque wrench or this could be you

http://youtube.com/watch?v=jv4m41viy4I