My question is this, the factory tires that came with my explorer were P rated meaning passenger. I up graded to Goodyear Wrangler Silent Armor tires which were also P rated. However now i have BF Goodrich All Terrain tires which are "LT" rated meaning Light Truck. What difference does this make on my stock 4x4 explorer that never tows, does 90% highway, and is used as a daily driver? LT- Light Truck P - Passenger Oh and another question my spare is still the factory Michelin Cross Terrain P rated tire, will this affect handling if i put it on with the LT rated tires?