I just upgraded the tires on my camper from load range C's to Load range D's. The camper has two 3,500lb axles under it and has a dry weight of 3900 lbs and a gross weight of 5,600 lbs So no problem there.

The The C range that were on it were rated for 1820 each at 50psi for 7280 total, the new D range are 2150 each at 65psi for 8600 total. These both are obviously adequate to tow around my little camper but when upgrading the D's were only $8 more a tire.

Now that you are up to speed, should I run my new tires at the max rated 65psi or should I run less in them to help ride and wear patten, if the max pressure will hurt them.

I like the added security of the heavier tires, I'm one that like to run up the interstate with traffic at 70-75mph and and the D's make me feel like the tires will take a little more abuse, I am just wondering if I should leave them at max pressure or let some out. All the other trailers I have are loaded down heavy (near max weight) so max tire pressure was a no brainier, this one the tires are rated for 3,000lbs more then the trailer.

I'm just worried about the extra pressure with out the weight is gonna cause the tread to wear in the center faster.

Here is the whole set-up.

 

Here is the chart for my tires, The show the reduced rating but clearly state underneath NOT to run tires under the max pressure.... Looks like I'll leave them pumped up.

 

Our shop would recommend 65 lbs. Air is your friend.

 

i would do max 65

 

Here's a thought, run them at recommended pressure for awhile, pay attention to your tires and maybe even measure tread wear across the tread of the tire. Adjust tire pressure accordingly. After all of that, check them regularly and add air as needed. Too often people put tires on and never check them again until there is a problem.
Stay safe out there.
Ken

 

All of the tire shops that I have dealt with over the years have always said run them at the max psi so that's what I have always done. With doing this I have never replaced a tire due to wear, they seem to dry rot way before they wear out.