old rig, 1984. new tires( still have tits) Carlyal ST185/ 80 D 13" aired to 55#, single axle. not sure of gross weight, but boat is a 17' I/O v-6 OMC 800, shorelad'r trailer. 55- 65 mph 1.5 hours drive, outside air temp about 55 degrees, even some rain. arrived home, axle hubs were cool to...