I've stayed with the 32's since I bought them with only 50 miles on them a year and a half ago and they're not really wearing out. So I've actually had those taken off the Rubi rims and have installed 285/70/17 KM2's. I'll reinstall the 255's on my factory rims to trade the XK off, probably next fall. I'm kind of a slow driver so I don't wear tires out too quickly.

As for the install, I think $800 is right in there. I had my local dealer install my 4" SL and their rate for doing that was $85/hr. Since they had never done one previous to mine, it took them 22 hours (=$1,870!!) which they were more than happy to cut to $850 since they used my Jeep as their guinea pig. Yours won't take near that time if your installer had already done this kit.

By the way - you'll love it. It's a fantastic addition to the Commander.