On my 30' Class C RVs I have upgraded to Commercial rated tires which each have ~500lbs more carrying capacity compared to the E-Load rated tires. On the 30' Class C RVs, I feel that the E-load rated tires don't offer enough buffer vs the possible max load on the back axle.
Just to be clear...I never recommend overloading your rear axle. But I sleep better knowing that the Commercial rated tires can carry ~2000lbs more so it hopefully reduces the likelihood of a blowout. I have two 30' Class C RVs. On E-load rated tires I've had 2-3 blowouts over a 5 year period (all minor). Since switching over to Commercial rated tires I have had zero blowouts. I did not notice a difference in the ride quality or noise.
Note: C-load rated tires are NOT the same as Commercial tires.
Since I know my tires are not likely to "wear out" and will more likely "age out", I try not to overspend on high end brand tires. Over the last 5 years I've been able to find reasonable tires at ~$125 each at Big-O tires nearby.
Safe travels!
Chris
