As an official member of the "Weight Police" I say So what!
You may think those are light weight plastic toys but maybe they are super heavy "Neutrino Metal", you know that stuff from the center of collapsed stars. I hear it's really heavy stuff.
Get the to a scale to know the real load on your tires.
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.Write a blog on RV tire application
RV Tire Safety. 48 years experience as tire design & forensic engineer. My RV Freelander 23QB on Chevy 4500 chassis. Giving seminars on RV Tire applications (not selling)@ FMCA Conventions. Mar 20-22 Tucson AZ