Just a FYI on Quadboss tires, they are made in China. The made in China is on the bead on one side, so when mounted you can't see it. I run a set of the QBT846 30x10x14 (they are closer to 29" then 30") on STI HD7 rims most of the time. They work great here in Arizona for what I do, but seem to flat spot if I haven't taken it out in a while. Seem to wear fine, but would be much happier if they were made here. Two of them took a bit of weight to balance too. If the manager at the tire shop that mounted them had known he probably would have charged me extra. As far as taller tires goes, the ground clearance is nice and you can really fell the longer foot print on the hills. They bite in as opposed to breaking loose. They actually squat a little bit more on the down hill side of the tire then the smaller tires do too. Taller also give you more leverage to get over stuff if you have the power. Down side, you will loose torque if you don't change your gearing. Have fun and be safe.