Metal production much thinner than standard truck sheet metal does not distort if properly stamped. This is not about weight, it is about cost cutting and sub standard stamping/forming production methods.
Current vehicles will go 20 to 22 gauge. Possibly trucks may be slightly heavier. Yes, years ago sheet metal was far heavier gauge. The pickup back in the 1950's were 16-18 and some were even 14 gauge. People actually used to walk over cars hoods, fender, roofs and trunks to get into or out of their vehicles and no permanent metal deflection occurred in the robust but heavy sheet metal. I would not advise that being tried on today's vehicles.
Last edited by skytop; 09-05-2013 at 11:39 PM.