Re: random clicking sound from tire
A decently common problem/issue on the WK is the lining on the ebrake comes off... people have complained about intermittant ticking and clicking and could cause grinding and grabbing concerns too. A way to check is pull the wheel off, followed by the caliper, remove the rotor retainer o-ring (thats all its there for, it may not be there any more in your 05 by now) and pop the rotor off. from there you can see if the friction material is still in good shape and properly attached to the shoe frame.
2005 Jeep Grand Cherokee - Gone but not forgotten!