Boat-trailer tires require a lot of air pressure — in most cases ... which often run on tires inflated to 35 psi. (Though large heavy-duty pickups will run on tires with higher inflation pressure.) ...

If you have never towed a trailer, camper, or boat before ... Just driving past a heavy-duty pickup truck towing a large RV inspires awe and a healthy respect for the sheer power of these machines.