good day all: i have a 1996 gmc yukon 5.7 with the towing package.i tow a 14 ft starcraft w 25 johnson outboard.my trailer was upgraded to 13" car radials,i have 4 bolt hubs with bearing buddies,i to this boat 718kms one way to my camp in northern ontario,most of the time the boat is loaded to the brim with all kinds of camp stuff my wife thinks we need.<br />i check the tire pressure,and grease the bearings befor each trip and have yet to experience any troubles.<br />Z