Trailer- Bearings
One other thing I might mention is in regards to the trailer wheel bearings. I had a couple of bearing failures on my Chaser running the 37" tires and a 3" wheel adapter. Mario, from Adventure Trailers, and I had several conversations trying to determine the cause of the failure. About the only thing we could think of was the extra torque created on the bearing by moving a large, heavy, tire ~3" outboard of the hub.
Adventure Trailers suggested I switch out the standard bearings to Timken brand bearings. Since doing that, I have had no bearing failures. (knock on wood) We really don't know what caused the failure, but using a high quality bearing seems to have solved it. I believe AT's standard bearing is now Timken. That is what I'm running in my AT Teardrop.
Of course, the first failure happened at the most inconvenient time. I noticed the first failure just as my wife and I were getting to head over Ophir pass in Colorado. Just before getting on the trail, I happened to look at the trailer's passenger side tire from the side rear view mirror and noticed the tire was angled funny. Upon further investigation, the tire was about 3" from vertical. Grabbed the tire and gave it a good shake. The tire wobbled considerably. No bueno. Pulled the tire, hub, and bearing. I got a hand full of chewed up metal when I inspected the bearing. The wheel bearings had completely failed and had scored the wheel spindle. I put in a call to Adventure Trailers to get the bearing part number. Mario got on the phone and found the nearest bearing source for me. (Great customer service! Mario even called the next day to make sure we were back up and running!) Of course, the nearest place to get a bearing was 1.5 hours away in Durango, CO. So, I left the trailer on the side of the road and went for the bearing. 4.5 hours later we were back on the trail. SO...if you aren't running a quality bearing, do yourself a favor and swap out the wheel bearings. You might also want to throw extra bearings in your spare parts locker. I carry a couple of sets...now.
Just my $0.02