I had the Goodyears on my '02 Wrangler. They cupped pretty bad. The Goodyear dealer said that I should have rotated my tires every 2500 miles!
Solved the problem by getting BF Goodrich All-Terain T/A's. I'm very pleased with their performance. They are also a true 3 ply sidewall tire, which can be important if you go off road. Size 31x10.5x15 will fit on stock '98 and newer Wranglers. You can see the tires here.
They ride better, and wear has been even across the tire, with no evidence of cupping. I've towed the Jeep about 6,000 miles so far with the T/A's. I run 30 psi in the tires.