I worked at Sears when the Explorers first came on the market. The big buzz around at that time was that ONLY P225/75R15 tires could be used on the Explorer, nothing else, no exceptions. This came from Ford. Have any of you ever seen a P225/75R15???????? That had to be some scam between Ford and Firestone, talk about an odd tire size. Was Firestone the only maker of that size? Those same places that won't put on LT tires, pawning it off as a "safety concern" are probably doing crappy brake jobs, putting on cheap crappy oil filters, over tightening your lug nuts, etc. Sears always tried to portray themselves as looking out for our safety and crap like that, but they would sell you a new tire for $18.99. Let me tell you, that was one quality tire. (sarcasm mode off)