well, I guess it all depends on the depth of the pothole. if you're THAT concerned about it, you might ask your smart center about purchasing the Tire and Wheel Insurance. for the price of one wheel, you can get a policy to cover the expense of replacing a blow tire or busted wheel from road damage.
just something to think about. OR you could buy a Hummer H2 and not work about ground clearance, potholes or anything else for that matter....