Welcome to the Forum! Here you will learn a lot about your new rig.
Having had both rubber and metal ones cause problems and low tire pressures, I think they both can be a pain. I would go to a good truck tire shop near your principal residence and have them install new extensions and supports. That way, if you have problems, they can come out and fix them under warranty.
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Colorado '15 Winnebago Forza 34T w/MKZ hybrid toad '20 Jeep Cherokee Trailhawk toad
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