MFL wrote:
Wrinkles are usually a sign of failed glue, that is supposed to hold the roof down. When towing at higher speed, the wind up draft lifts the rubber up (billowing) causing it to stretch, leaving the wrinkles when parked. Have wife, or friend in another vehicle watch at road speed to check.
Jerry
X2 we had to have the front third of our fifth wheel roof reglued under warranty. If you watch rv trailers being towed down the highway you will see the big bubble above the front roof area more often it’s a fifth wheel , the shape of the roof is like an aircraft wing causing the roofing material to lift if it wasn’t glued properly. Ours was repaired by the dealer they removed the gutters and tv antenna then pealed it back to where it was attached well reglued it trimmed it and put the gutters back on sealed the antenna mount and we never had another wrinkle or leak for 10 years
Mike