Air Pressure on Tag vs Tag Tire Air Pressure

[dmason]

In reading through the tag air pressure threads found the question I was going to ask about location of the tag air pressure gauge on my coach was answered back in 2009. Thanks again.

But that leads me to my current question - Is there a relationship between the air pressure on the tags vs. the tag tires' air pressure? The air pressure on the tags in my coach is 40 while the air pressure in my tag tires is 80, based on a recent weighing.

Thanks again for adding to my knowledge base!

[SteveB2]

The way I understand it is, more tag pressure equals more weight on the tag. Therefore you would adjust tire pressure accordingly. Remember that the weight of the coach will pivot on the drive wheels, so increasing the tag pressure will increase the load on the front. My coach seems to be pretty well balanced so I'm not going to mess with it......:-)

[ga traveler]

Tag axels are made to carry a much lighter load than the main axel. Never overload a tag. I worked on a couple of Airstream 345 motorhomes that were having tag bearing failures. The height sensing valves that controlled the airbags had gotten out of adjustment and was overloading the tag axels. I readjusted the sense arms and it cured the problem.

[Twomed]

That should be plenty (80psi), but I like to run a little higher so there is not too much side scrub wear (100psi). When I weighed mine at 42psi on the tag it was at 5760#, way under tire capacity. Toatal weight about 43k if that helps you make a comparison.

I think you're just fine..