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Loud deep humming @ 70MPH on stock 99 XJ

My BFG 35"ATs tend to get a lot more noisy from 55 to 75+ They quiet back down at 94 where it likes to cruise. The noise from the stroker and exhaust tends to mask most noise though.
 
You guys are going to fast ;-P

Anyway before you look for new tires, look very closely at the old ones. The tire condition can tell you alot like the rings of a tree.

You could have a bad alignment which would cause any new tires you get to wear badly also.

You can google "tire wear patterns" and research this.
 
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