Load C to load D tire inflation?
So I have Jaxxon tires now on the RV. Rated 81 mph load C @ 1760 each. 205/75 r14 @ 50psi Note: Im not upgrading rims, tires to 15". No way. Cant afford it. The tires are ok. Seems wear for ...
Forum Discussion
The psi ratings of the new ST Endurance tires has def. caused some confusion out there. These posts about the Endurance tires on the RVtiresafety.net blog here, here, and here. are a MUST read.
What's important is reserve load capacity to reduce heat which will reduce the risk of a blowout. The more reserve load capacity you can get, the better - not a good idea to reduce it unless you had plenty to start with. This is why it is always a good idea to run the tires at max. sidewall psi. I'd run the tires at the highest psi you can (to their max rating) and harsher ride isn't a concern. The higher psi should give better handling/stability IMO on twisty roads or making sudden lane changes.
End of next season I plan to replace our then 5 year old Marathons with the new Endurance tires which for the same width would be LRE. That would mean for our TT, going from 65 psi to 80 psi. I do not know if our rims can handle higher pressure and haven't pulled a wheel off yet to see if there is a rating stamped on it. The solution is to simply run the tires at the LRD psi of 65 psi. We ordered the optional LRD Marathons over KZ's standard LRC tires when we bought our TT and already have much higher reserve load capacity than KZ's standard LRC tires and running LRE tires at 80 psi to get max. load rating is unecessary. If our rims can handle 80 psi, I'll run them at 80.
I get so tired of people bashing Marathon tires. You'll never know how an owner treated them, even if they claim they did all the right things. To get reliable and decent service life from any ST tire, you need to stay under 65 mph (unless tires are rated higher), never tow overloaded, never tow under-inflated, stay off road shoulders and avoid sudden/hard speed bumps and potholes.
What's important is reserve load capacity to reduce heat which will reduce the risk of a blowout. The more reserve load capacity you can get, the better - not a good idea to reduce it unless you had plenty to start with. This is why it is always a good idea to run the tires at max. sidewall psi. I'd run the tires at the highest psi you can (to their max rating) and harsher ride isn't a concern. The higher psi should give better handling/stability IMO on twisty roads or making sudden lane changes.
End of next season I plan to replace our then 5 year old Marathons with the new Endurance tires which for the same width would be LRE. That would mean for our TT, going from 65 psi to 80 psi. I do not know if our rims can handle higher pressure and haven't pulled a wheel off yet to see if there is a rating stamped on it. The solution is to simply run the tires at the LRD psi of 65 psi. We ordered the optional LRD Marathons over KZ's standard LRC tires when we bought our TT and already have much higher reserve load capacity than KZ's standard LRC tires and running LRE tires at 80 psi to get max. load rating is unecessary. If our rims can handle 80 psi, I'll run them at 80.
I get so tired of people bashing Marathon tires. You'll never know how an owner treated them, even if they claim they did all the right things. To get reliable and decent service life from any ST tire, you need to stay under 65 mph (unless tires are rated higher), never tow overloaded, never tow under-inflated, stay off road shoulders and avoid sudden/hard speed bumps and potholes.
