I would be happy to help you find the correct replacement landing gear for your 2011 Forest River Sandstorm 5th Wheel Toy Hauler, but based on the measurements you provided there is not an exact replacement option available.
The closest options is going to be the Lippert Electric Landing Gear Set - Weld On - 37" Lift - 6,000 lbs # LC333964 which measures 15-1/2" inside to inside of the weld stops, and 17-1/2" outside to outside of the weld stops. This option along with all of the available... view full answer...
If there is only wear on the outside of the tire then that would indicate a suspension or axle issue, the only way to really diagnose this is to have the trailer looked over in person by a qualified trailer repair technician. If there are any worn or broken suspension components then they will need to be replaced. If the axles are somehow misaligned then we do offer kits to remedy this like the Correct Track Trailer Alignment and Lift Kit part # RR23QX which also has a built-in lift. view full answer...
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