[Beaver]

Welcome Joe, and thanks for the good info! I will check on the airtabs. I've considered something like the 4-panel "boattail" that I see on many long haul trucks on the freeway, but it would be kind of big and weird looking on a Toyota MH. I'm pretty sure it would be helpful, since truckers use them (they are also evaluated in the study mentioned earlier in this thread). On the air conditioner, I took mine off, and we try to always be somewhere where we don't need one (or a heater either). These little MH's have 14" tires on a very unique wheel that would make it difficult to switch to super singles, though I'd love to. I'd also like to find more info on low rolling resistance tires in this odd light truck tire size. There is very little selection in this size and they can be hard to find. Your comment about having only two sidewalls to flex is a good point.