Smark. Slow getting back as we have been camping again. 5th trip and all is well. In fact I love the rig more each time I use it.
The car knows the trailer is there only on steep grades, and the paddle shifters take care of that. We run 70mph @ 3,300 R's on the freeway. In city's and towns we shift out between 3-4k with paddles.
Had passenger and all her gear, as well as full camper load, on this last trip , and the car got out from the lights with and ahead of most traffic. Brakes were more than adequate, in fact there is little difference with or without the trailer.
I very carefully monitored the clutch performance and feel no abnormal responses. As for Warranty, the OM says no trailer, but all small cars say that for CYA. I would wait out your 24k unless you can come in for service with a bike rack and say you only carry bikes on that hitch.

A2Jack