Be careful which tires you choose. I just went through 3 months of trying to solve a shimmy problem at 70 mph which all started when Mossy Nissan in Kearny Mesa did a front-end alignment (NEVER LET MOSSY NISSAN DO AN ALIGNMENT ON YOUR XTERRA). One of my stock BFG Long Trails had a radial tire pull. BFG would only replace one tire so I decided to get new tires since I never really liked the Long Trails to begin with. I got a set of Pirelli Scorpion AT's, no matter how many times I balanced them, they would shimmy at 70 mph. So last week I replaced them with some Michelin LTX M/S and it finally solved all my vibration problems. They aren't cheap but they are very smooth riding and handle extremely well. It's not an off-road tire but I do 90% street driving and 10% off-road so it suits my needs just fine.
Anyway, to get back to your question. If you're going to do mostly highway driving and don't mind spending a little more money, I'd go with the Michelin LTX M/S. Great tires. If you're looking for off-road performance, people on here have said good things about the BFG All-terrain T/A's (incidentally, BFG's tire division is owned by Michelin). Both tires are a little pricy. Supposedly, Dunlop Radial Rover A/T's are supposed to be a pretty good value, performance-wise I have no experience with them. Expect to spend a little more for truck tires than for car tires.
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2000 SE 4x4 5sp Alpine Green
[This message has been edited by ChimChim (edited 04-27-2001).]
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Normal people don't exist.