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In theory, bolts are to be loaded in TENSION, that is their design. That is why we use bolts. The tension then 'compresses' mating components and is supposed to keep what they are bolting together from sliding relative to one another because of friction created from the tightening of the bolt. Making a tight fitting hole, you could load the bolt in shear. This is generally not good for the bolt. However, I am not completely sure on this application re: movement of the suspension or if it is just a brace...picture too zoomed in...and I am too lazy to go out to my car. I wouldn't worry about the gap.
Ideally, you should multiple torque all your bolts, especially when using new bolts and nuts. Triple torque procedure: Tighten by hand - Torque to specification - Loosen - Retighten Torque to Specification - Retighten/check torque specification (via torque wrench). What this does is effective work harden the threads, especially any high spots. It should help to keep your bolts from backing off, especially under vibration. You can do a double check after 100 miles or so to make sure they are still tightened properly.
Last edited by aerophool; 03-15-2013 at 05:47 PM..
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