JMGNole wrote:
The tires are the prescribed tires, properly inflated, and brand new that morning.
The trailer was empty, except for the furnishings and water.
The extreme sway event was caused by us being undercut in traffic.
I'm not surprised and can be very typical handling issues on brand new tires. Tread roll till the tires are broke in can be common.
I've seen 3/4 and one ton truck owners with 5th wheel trailers complain about TAIL WAGGIN' THE DOG issues with brand new tires on the truck.
New tires can take several hundred or several thousand miles to break in. And many times this issue can be felt when not pulling a trailer. I'm sure other factors are working here but at some point the combo can be fine tuned to eliminate those type events.
GM was notorious for using 6.5" wide wheels on 1/2 and even 3/4 ton trucks. Then add a tire like a 265/70-17 that can have a 8"-8.5" wide tread. This balloons the tires tread causing it to ride the center of the tread especially at higher pressures. Same type handling when towing a trailer.
