Thor Forums

[lwmcguire]

Are C rated heavy enough for your weight?

Seems like an 8-10 ply minimum for a loaded rig

Never ran anything lighter than an E on any of my HD pickups so just curious

Originally Posted by jabrabu

As an update to this thread, I ended up getting the General Grabber HD tires, 225/75R16C, C-rated with the load index 121/120, for my rear tires. I looked at some of the other C-rated tires in that size, and a lot of them are the rib type truck tires that don't have an all-season tread pattern. I decided on these partly because they are all-season C-rated tires, and also based on availability at the truck tire shop I like to use.


As I stated earlier in this thread, I have had a couple of rear tire blowouts, even though the tires were only a couple of years old without much wear, and at proper pressure. These big class C's are overloaded at the rear from the factory.



The front tires were replaced last summer with General Grabber HTS, LT225/75R16, along with a custom alignment. These have the load index 115/112, which is what the RV comes with from the factory. The front end is not too heavy, and I haven't had any front tire failures, so I think these will be fine. When they need replacing I'll probably replace them with C-rated tires.



We are planning a long trip around the country this summer -- over 6000 miles, so these new rear tires give me some peace of mind and will hopefully prevent any tire failures. I also replaced the rear differential oil, transmission fluid and filter, air filter, and generator oil recently. I'm very anal about maintenance anyway, but especially in preparation for this trip.