Tire size depends on how much $$$ and time you want to put in it. If you said you want long arms and really good suspension I would say 35s on a DD works fine. I've been battling this exact conbo and I am about to dive in.
Whats this crap about 33s and upgrading axles and the engine? I have you know on my 2000 you can put an AA SYE and TW. ds, a nice Lift, gears, tires and thats it. I don't know what year model XJ you have, but you don't need ANY upgrades to run 32s, muchless 33s on my stock drivetrain (unless its a d35, get a Jeep w/ 8.25), just gears. I'm going to run 35s on stock axles and not put any money into terds, because I do have whole axles that I can upgrade to if something goes bad. (Front Rubi, 79 Ford d60, and XJ d44)
Whats this crap about 33s and upgrading axles and the engine? I have you know on my 2000 you can put an AA SYE and TW. ds, a nice Lift, gears, tires and thats it. I don't know what year model XJ you have, but you don't need ANY upgrades to run 32s, muchless 33s on my stock drivetrain (unless its a d35, get a Jeep w/ 8.25), just gears. I'm going to run 35s on stock axles and not put any money into terds, because I do have whole axles that I can upgrade to if something goes bad. (Front Rubi, 79 Ford d60, and XJ d44)