I recently sold my '13 RR HSE and I needed a more aggressive tire for my recently purchased, mostly deblinged, F150 Platinum. In the pickup world, everybody is raving about this tire. There are several different 18" variants for you guys running the smaller wheels and the 275/55/20 would be a good fit for those running the stock wheels. This 275/55/20 seems to be the std. size for all fullsize pickups, Tahoes, Suburbans, Expeditions etc. It's 31.9" tall, and I think it might be a good fit for the LR4. There are some larger 20" sizes, although I don't know if they would work...