My '97 Land Cruiser is rated for something like 4500 lb, but the manual
warns: 1) no more than 45 mph! 2) 2nd gear!? 3) no spring bars.
We've had only 1 short trip with no passes, so I'll report pro or con
eventually... it felt better towing with the spring bars on my light 17'
Caravel.
Huff