I believe the weight of your BX25 is over 2500#.
16' trailer
Tandem axles.
Brakes on both axles.
Aluminum or wood.
I hauled my BX25 on a 16' tandem axle trailer with brakes on 1 axle.
This was behind a 3.0 Ford Ranger auto. I had no problem with weight distribution. But, brakes on 1 axle did...