My Nitto Trail Grapplers drove a little "squirmish" when they were really new. It took a few thousand miles and lower tire pressures in the rear to improve. After at least 5000 miles + they got much better. Since 10,000 miles they have been great. This is on LT285/70R16 on a 8.5" wheel. I think it was just the tall tread. Lower tire pressure helped me a lot. Great tire once "broke in".