I'm still on the fence about my next tire size. Two of the things I'm considering are weight and wet/winter weather driving. I've noticed a few brands offer 255/80r17 which I think would be a true 33/10.50 vs the Rubicon size that measures more like 32". I know the taller size will probably make me shift even more on the highway which isn't such a bad thing but I really like being able to use 1st gear going down hills in the winter and on slippery trails. Anyone running that size, especially those with a 6-speed?