I recently purchased a 1993, 27 ft Class C motor-home on a Ford E-350 chassis. The tires look almost new but the vehicle sat for several years un-protected from the sun and the tires are badly cracke...
I'm not sure, but perhaps the LT series has replaced the HT series of tires, you need to talk to a manufacturer perhaps. Michelin used to have a website, might be worth a try. If I remember correctly, the LT series is what we had on our Pleasure-Way Class B, but we sold it last year so can't help you out.