Originally Posted by jml
Talked to a tire dealer today and he told me I could put the Fierce Attitude LT285/75 R16 on the stock rim and run without any problems.
You've gotten good advice here.
The tire dealer's wrong. You'll most likely have some sort of rubbing issues with the 285's, which are quite a bit wider than your stock tires. Especially if you plan on taking your rig off-road.
Better to save your $$ and buy new rims and tires at the same time. Shouldn't be too difficult, willpower-wise, as the stock Sport rims are a blight on all Jeepdom, IMO.
You'll want rims with 4.5" backspacing, or less. The smaller the #, the farther your tires will stick out. Don't want em to stick out too far, though, or it'll put unnecessary stress on your bearings, while painting the sides of your Jeep every shade of road grime whenever you roll in the rain.
If you decide to get 15" rims, make sure they'll fit over your brake calipers. Most alloys will; most steelies won't.
Check with DTD (Discount Tire Direct...a forum vendor) via PM or phone, and they'll tell you what's what.
Nothing wrong with the Fierce Attitudes, btw. They're kind've a little sister to the Goodyear DuraTracs, but significantly cheaper since they're not marketed by the mothership.
There's no prizes for throwing new rubber on your Jeep as fast as possible. It's not a race. Take your time, do your homework, and do it right the first time.
Good luck with it.