I'm looking into getting a 25 travel trailer that has a Unit Base Weight (with LP and Batteries) of 5,600 LBS and Maximum Trailer Capacity (GVWR) (lbs.) of 7,300. From what I've seen online the 200 series has 8,500 -8,600 max trailer weight capacity. I've been reading through this thread and wonder if/how towing capacity changes when the land cruiser has been modified with front and rear bumpers and steel side steps.
Also since i'm totally new at towing, what numbers do you go with when determining what you can tow. Do you go off the Unit base weight or the GVWR of the trailer?
I would like to tow with the land cruiser but don't want to invest in helper airbags, trailer brake controller, and trailer mirrors if this is too much weight for the cruiser.