I recently purchased a used Jayco Precept 31 UL motorhome that is on a Ford F53 chassis. After the purchase I found that the vehicle handled very dangerously when being passed by a large trucks, or when there were crosswinds or medium strength winds. The problem was bad enough the I narrowly avoided accidents caused by being pushed around by passing 18 wheel trucks or crosswinds, or both. After doing some research on this vehicle, and others on the Ford F53 chassis I found that these handling issues are the...
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number one problem with these units. I subsequently had to invest over $6K to correct these handling problems as they were the result of the ineffective stock suspension configuration from the factory. I had to install a steering stabilizer (Safe-T-Plus), a rear track bar (SuperSteer), front radius rods (SuperSteer), new special damping shocks (Koni FSD shocks) and an adjustable drag link (unsure of the manufacturer). All these modifications collectively changed the handling of the RV from a huge safety hazard to a well heeled and safe handling vehicle. These changes should have been included as standard safety equipment directly from the factory. It is incomprehensible to me that a vehicle of this size should be allowed to be leave the factory and be on the road with such dangerous handling issues. If you do the research you will find many owners of these units who struggle with the same issues and who have had many near misses or accidents on the road as a result. Recreation Vehicles built on the Ford F53 chassis need to be highly regulated and inspected to ensure that they leave the factory with the safest configuration of suspension, chassis and steering equipment available. These vehicles should all be placed under a recall to have the manufacturer(s) install, at their expense, the handling modification I outlined above.