they're harder to find, even harder to pay for and an effin pain to get on/off the rim. also, imo, i dont think they provide the same traction or stability for the heavier loads in inclement weather or off-road situations because the weight of the vehicle isn't distributed across the same amount of surface area. also, you have to ask - is this really cost effective? sure, they look cool and you gain a little from the weight savings but what if you lose one on the road? few months ago, friend of mine was on his way out to weatherford at night in a co. truck with singles, picked up some trash in the road and lost a drive tire. couldn't limp the load in on a an aluminum rim, had to wait until 8am for the roadside service to get there, load was late, bill was better part of 1300$.
