Community Forums

edsperfect · 02-18-2015, 12:33 PM

Since i am no where near a weigh station what pressure would I be safe using on a 2000 tiffen class a allegro till i can get it weighed?

edsperfect · 02-18-2015, 12:33 PM

forgot 32 ft

Gary RVRoamer · 02-18-2015, 01:02 PM

There is a federal weight sticker on the wall near the driver seat and that will have recommended tire pressures that can handle the max rated load. Use that until you can get a weight and see if a lower pressure can be used. You can only use that if you still have the same size tires as the original equipment, though.

stuhly · 02-18-2015, 01:06 PM

If you run somewhere around 100 lbs until you get it weighed you should be OK

ralphie · 02-18-2015, 05:05 PM

I would use the max pressure indicated on the tires, less 10lbs, until getting it weighed.

wildtoad · 02-18-2015, 05:15 PM

Quote:

Originally Posted by Gary RVRoamer

There is a federal weight sticker on the wall near the driver seat and that will have recommended tire pressures that can handle the max rated load. Use that until you can get a weight and see if a lower pressure can be used. You can only use that if you still have the same size tires as the original equipment, though.

What this guy said.

Mr_D · 02-18-2015, 05:23 PM

Quote:

Originally Posted by ralphie

I would use the max pressure indicated on the tires, less 10lbs, until getting it weighed.

On RV tires the pressure on the sidewall is the MINIMUM required to support the MAXIMUM rating of the tire. That's stated in the tire manufacturers booklets.

Gary's answer above is the correct one till the OP gets it weighed. We'll have to do with the Magna we're getting tomorrow.

Ray,IN · 02-18-2015, 08:07 PM

This pdf published by the Rubber Manufacturers Association (RMA) contains complete guidance for tire use and care. In our circumstance, chapter 4 pertains to RV applications. Of particular interest is page 55, 3rd paragraph right side of page, after addressing load/inflation charts, which states:
However, never use inflation pressure lower than
specified by the vehicle tire placard, certification
label or owner’s manual. Nor should inflation
pressure exceed the maximum pressure molded on
the tire sidewall.

flynnwalter · 02-19-2015, 07:45 PM

Ed
It really is best to get a four corner weighing, when the coach is loaded for a trip so as to be as heavy as its likely to ever be. Some coaches (including ours) are not loaded well side to side and a four corner weighing is the only way to 1) find that out and 2) properly inflate tires to the same psi as required on the heavier side. We got ours done at Josams in Orlando. Many rallys include companies that can perform a proper four corner weighing. Few public scales allow for this as most are raised and weight is transferred to the lower side skewing the reading. It needs only be done once.

Retiredblade · 02-20-2015, 10:39 AM

I invested in two portable truck scales, a few years back. When I load the motor home, I drive up on the front scales, weigh it, drive off, move the scales to the back, drive up, weigh it. Then go to the tire chart Mich. and check and see what psi it requires, then to the other chart Yokohoma on front, check the chart put air in and I am good to go. I run 95 Psi on the rear and 105 on the front.