Heavy Class C Tire thoughts

BFL13 wrote:
"With E rated tires (which is what the manufacturer recommends), if the rear axle is at max load there is very little extra weight margin and my opinion is that the tires are being stressed"

Wait a sec. Are you saying the actual rear axle weight on the scales is enough to max out the Es? Or are you saying the Es are not enough to meet the rear GAWR of the C?

What is the rear scale weight for that C as loaded for camping and what PSI do they want on the door label ?

Yes! I will have to dig up the actual numbers (or someone else will and post them here...), but if you are at the max weight rating of the rear axle and the E load rated tires are at their proper inflation (80psi max), there is very little weight buffer.

Yes, I understand that you should not be above your Max axle weight limit to begin with. But most people don't routinely (or ever) weigh their RVs fully loaded (ie. full tank of gas, full water tank, full grey/black tanks, full gear, full number of passengers, tow tongue weight if towing something, etc). Then, what happens when you hit bumps, dips, potholes, etc on the road? I don't want to risk it.

The Commercial 121/120 rated tires gives an extra ~500lbs per tire weight carrying capacity. x4 gives you 2000lbs of extra buffer. Like I said...I sleep better at night knowing it is there.

Side note: A few months ago, I had an inner rear tire go out (stem broke). So just ONE E rated tire was holding the entire weight of that side. I drove about 10 miles without knowing, including about 3 miles on the freeway. Thankfully, it didn't blow. I guess they are pretty tough. But still...I'll go with the Commercial 121/120 load tires just to be safe.

Good luck!
Chris