Last week I dodged the snowstorms and made the trek out to Jackson Center to upgrade my 16' Bambi to the 4300lb axle, 15" wheels, 225/75R15 Load Rating D tires, and disc brakes.
I am very happy with the axle upgrade. I would be completely happy if I hadn't found out while I was there that Airstream is in the midst of switching over to sealed bearings in their new trailers. If anyone else ends up doing the upgrade, check with parts first to see if they can order the new axles.
I am extraordinarily happy with the new tires. They look and feel so much more substantial than the 215/75 R14s - and at 2540lbs vs 1870lbs they provide a mighty margin of safety at any speed.
I am mostly happy with the new brakes. The stopping power of the new brakes is nothing short of amazing - if I slam on the brakes it feels like I dropped an anchor in the road. However, there are still a few 'bugs in the system'. For details, see