Wanted to post just to provide my experience. Bought our X in July 2018. We tow a Yamaha SX230 Jet Boat. Boat, trailer ready for the water weighs in at 4700+ lbs. I was concerned the first time we backed into the water on the ramp if the brakes would hold the weight so I had my son stay in the car and keep pressure on the pedal. After a few trips I decided to sit in the car and release the pedal with only the electric park brake applied. It is solid and has never once moved with that much hanging on the back, not sure the grade of the ramp but this one is on the steeper side of others we have used. Last Friday we visited friends in Pittsburgh, needless to say hills are everywhere and steep, so was their driveway. Parked on it and no issues at all, granted there wasn't 5000 lbs tugging downward this time.
Just wanted to post this result in case you may be interested in towing any boat or weight on the rear....
Just wanted to post this result in case you may be interested in towing any boat or weight on the rear....