I'm in the market for some new tires. I have stock wheels on the tj. From the research I've done they are 15x7. I know most threads I see people run 15x8s. Would I be ok to run a 31x10.5 on a 15x7 wheel or is that bad news? Also I'm torn between the Duratecs, grabber at2 and the Walmart wrangler authority. I can get the grabber for $145 on tirerack. And the Duratecs are about $25 more. Authorities are $158. Has anyone by chance had experience with more then one and have some review of how they compared to each other, I know it's a long shot. Read good things about most of em. But none I have seen have been head to head comparison. Thanks guys!