Weight distribution systems place hundreds upon hundreds of pounds of upward force on a hitch receiver, so the weight distribution shank needs to be installed directly into the receiver without use of an extender like the # MPG544. Plus, due to the extra leverage a hitch extender places on the hitch, if an extender is used the towing and tongue weight of the hitch is reduced by half.
We have a few other options for carrying your bikes. If your travel trailer has a hitch on the back, you... view full answer...
In order to mount a 225/75-15 trailer tire you'll want to go with a 15" diameter x 6" wide wheel. If you have a 15" diameter x 5" wide wheel you'll want to go with a 205/75-15 trailer tire. I have attached some recommendations below for these wheels/tires.
Dexstar Steel Spoke Trailer Wheel 15" x 5" part # AM20422
Dexstar Steel Spoke Trailer Wheel 15" x 6" part # AM20522
Karrier ST205/75R15 Radial Trailer Tire part # AM10245
Karrier ST225/75R15 Radial Trailer Tire part # AM10303 view full answer...