I have these on my XJ - 215 85 R15 - they are AWESOME. Until I get caught on my belly being a smaller jeep, I'm able to keep up on guys on 34x9.5 Narrow SS swampers.
They ride great on the highway for what they are - mine are 10 ply, load range E truck tires. No vibes, shakes, etc. A bit loud but that's to be expected out of such an aggressive mud tire.
I recommend them to anyone. When I buy an XJ in the spring for daily driving, it's getting a set of the ATG tires in 235-75r15.
My tire size 215-85r16 is a truck tire and I couldn't find anything agressive for around $100 a tire except the treadwrights. Saved about $400 compared to a set of Dura Tracs!