Using tire air inflation charts vs side wall markings

If you're talking about a trailer of some sort then yes, we have had drawers open up and things will shift in the fridge. My wife and three granddaughters rode in our toy hauler for about an hour and wife remarked that it seemed the trailer was trying to beat itself to death. It was a stretch of I-10 in AZ, terrible road. Most of it depends on the road plus these things don't have any shock absorbers. I used to keep the tires at 80 on my previous 5th wheel. My current triple axle toy hauler has less weight on each tire so I keep it at 70 but stuff still happens inside.

Taking blanket numbers like the max PSI on the sidewalls {which by the way is merely a statement of fact not an instruction to do so}, or the numbers posted inside the drivers door will often lead to bad results. Your tires should always be inflated to the proper psi for the load they are actually carrying.

The chances that those fixed numbers which can not/do not take into consideration what loads are actually present have little chance of being correct. {Yep, even a broken clock is right twice a day .... but I digress...}

Don't know what sort of rig you have but a trip to the local CAT scale is in order. I run my 24' Class C with E rated Michelin LTX M/S 2's at 60 on the fronts and 65 on the rears as this is the proper psi for the weight they are carrying. The ride is very smooth even with the heavy duty Bilsteins I run. If I inflated all 6 to the 80 psi max the ride would be insanely rough and the tires would wear out prematurely.

As always.... Opinions and YMMV.

:C

Often debated question here on the Forum:
I'm in the "full psi inflation" camp. I don't care about a smooth ride for the trailer, I'm not riding in it.

I am in favor of not having a major blow out while towing and having all the grief that it causes. I want the max load rating out of my tires.

Rear kitchen is certainly a contributing factor.

A lot of "I've had fridge shelve bounce out, drawers slide out etc" has to do more with how much mass / weight is in the drawers when you're going around the corners too fast. For instance, the silverware drawer is always the first drawer to pop open if any of them do. There's way too much weight in it. The drawer with the hand towels never comes open. (Do we really need service for 12 in both dinner and salad forks or tee spoons and soup spoons and everything else???)

Bill

azdryheat wrote:
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I've got shock absorbers, but just OEM cheapies. Next step after airing down (if it doesn't help) is to upgrade to something better.
Thanks

NO fair:B small class C.:) Our old x rental is the smoothest riding RV we've ever had. Your tires...we have them on our tow rig (pick up). We had great results with the old style regular street tread. We replaced the old with same except m/s tread and getting bad wear. Bad wear and measuring with a tread measuring tool. I'm missing a lot of tread. I think I'll be OK and can will be able to "age out" instead of "wear out" but disappointed in tread wear. Discount tire and OEM has a mileage warranty. Bad thing is the warranty is pro-rated when buying another set of them. Not credit for other tires, but buying another set of them. I'm not going to but another set of them. See my posting about it http://forums.woodalls.com/index.cfm/fuseaction/post/forum/28/thread/29008748/quote/29008769.cfm

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I'm in the "full psi inflation" camp also. But the problems we've had thinking about changing camps.

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We've got same OEM as you. But a 25W. I think you have mid or front kitchen? Too much stuff in kitchen?...would never happen:B

I ask why we need so much stuff in kitchen, but I certainly don't ask before a meal is served.:)

And a side note, yesterday looking up some stuff for my pick up saw one of your track rigs. Don't know if its theirs or a customers. http://northlanddiesel.com/home.html

If the manufacturer of your tires publish inflation tables, I don't see how it would EVER be appropriate to inflate to maximum... unless your weight dictates per the inflation table. And, if that's the case, I'd be looking at a heavier duty tires so that I could be somewhere in the middle of the inflation table. In my opinion, nothing should ever be maxed out. Trouble waiting to happen.

Well what is the scale weight of the trailer axles? What is the max weight rating of the tires at 80 psi?

I run just about 9,500# on the 5er axles, and tires rated for 3,042# each 9,500/12,168 = 78 percent of max capacity 80 psi * .78 = 62.4, so I run at 70 psi. I have shocks, and they were the Lippert kit shocks (China) soon to be replaced with Monroe 555001's.

The only issue with our Rear kitchen, was a road buckle much like a speed bump at 45 mph, that was before shocks.