don't forget to check easily overlooked things like wheel lugs.
I have a friend who was making a trip last weekend in an xj and he started to notice the wheel shaking pretty violently as if the wheels were out of balance. He pulled onto the highway shoulder and started checking oblivious things under the car and didnt find anything wrong. He decided to check air pressure in the tires and noticed on of of the lugs on his front right tire had started backing off. He got a tire iron out of the back and all the lugs spun eaisly and need to be tightened.

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2008 Xterra 4x4
1986 CJ7Lots of custom stuff...
Gone, But not Forgotten...
2003 Sport - 'Fire Engine' RedDetours KJ Backbone
Skids
Boulder Bars
JBA 4.5 A Arms
245/75/16 Wrangler Duratracs's on Cragar Soft 8’s
Spidertrax 1.25" Spacers
Superwinch LP 8500
Frankenlifted