The lift kits for the Patriot will lift about 2 inches maximum and you have to watch out for buying tires too wide because with the lift you will not have much clearance to the coil springs in the rear. Gramps has a sticky link for recommended maximum tire sizes.
RRO's kit (and the others) is 2 1/8", any more lift and you'll be knocking out CV joints, etc. The Liberty guy's found that out real quick. The other thing is stick to max tire height of 29", you can fudge a little on that but not much or you'll be looking at wheel spacers and stuff. I recommend 28" but tread pattern is more important. 16" tires are the least expensive and have the best assortment of tread patterns, 17" are next and 18" are pretty bad for both tread pattern and price. If you just remember to do things in moderation you'll have more fun, it will be more dependable and not break the bank.
You'd be hard pressed to find a really good tread design for 18" tires, believe me, we've tried. I've got a friend who put together a 'gangsta' Hummer and then sold it to get a Wrangler, he loves it and he's sticking to the "tried and true" methods of building it.
Well is it hard to find anything 18 and above or just 18s? Lol, because i will go bigger if thats possible, cause the 16'' factory ones suck!!!! Ill keep an eye out and post if i find anything that looks alright!
Thanks Gramps. you have been a great deal of help!
All of the stuff above 18" will need a low profile tire which are usually expensive, rough ridding, poor tread design for snow, off roading, etc and may be too wide for the fender wells. The stock 16" steel wheels can be painted to take away some of the "ugly" and be quite fuctional. The spartan look is always "in", bling not always. The 17" stock wheels look better and there is still a very good selection of tires. Also take a look at other Jeep and aftermarket wheels in the 16" and 17" sizes. I have no recommendations but there are lots out there.
Artificial intelligence is no substitute for natural stupidity