In answer to the OPs question, you could cut a pc of alum treadplate of 3/16" thickness and attach that against the floor above the tires. One or more may be required per side based on the bracing location from the frame to the outer wall. You could glue, screw and strap the alum up to help hold it in place.
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2015 Ram,3500,Dually,B&W,4.10s,Aisin,Limited,Silver
2018 Raptor,428SP w/full body paint
2012 Harley, Ultra Limited
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