For those of you with a ZJ Grand Cherokee, an XJ Cherokee, or a TJ or YJ Wrangler, you may have tire rubbing issues when you turn full-lock, due to taller or wider tires. Wheel spacers, like THESE, sometimes help if your tires are set too far in, but if your tires are set too far out, due to aftermarket wheel backspacing, steering stops are your friends.
There is a well-written article with step by step instructions on adjusting your steering stops, located over at 4x4xplor.com that you should check out, if this is a problem for you. Literally 5 minutes and a few 5-cent flat washers can fix this really annoying problem!! Here’s the link: http://www.4x4xplor.com/steerstop.html
For you JK Wrangler and WJ Grand Cherokee guys with tire-rubbing problems, the concept is the same, but will require a bit more work. You can have someone tack-weld a flat-washer into position (same place, just no bolt pre-existing from the factory), or I supposed you could also drill, tap, and find a bolt that works, too. (then again, I have a welder handy, so for me, 2 minutes tacking in a washer is a LOT easier than drilling and tapping, lol.)