Top of the ball should be 19″ on todays trailers. 18″ on those older than 2000.
BCB
I sincerely regret mis-stating the ball height. When I originally responded, I measured the height on my wife’s Trailblazer, with a 4″ drop, and it was 15″. This vehicle has 16 inch wheels. I have been towing with this rig for 3 years as a back-up vehicle.
Anyway, I measured my 2006 Z-71 EXT pick-up just now, and it is 18.5″ to the top of the ball. I have a 5″ drop on it. This has 17″ Bridgestone tires and factory aluminum wheels.
Gary Hollander