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Air hose and tire pressure

Hello all, and thanks for all your help. We were at Foretravel today and (of course) left with a bill. They would not put air in our tires at proper pressure, mentioned legalities. May I ask what others do to check and ensure proper tire pressures? The red hose in the bay can be used to inflate? I cannot find anything on it in manuals. Would love to buy my own gauge etc if necessary, or use the one in the Coach.
I apologize if this has been asked, before......
2012 40 foot Nimbus

Re: Air hose and tire pressure

Reply #1 –
Weigh your axles at least, then consult your tires inflation chart to find recommend pressure for your load. Pressure guage is for your safety so get a good one. TPMS tire pressure monitor system is for safety. These highly loaded tires tend to come apart in a very dramatic event, that you do not want to witness.
Old Phart Phred, EIEIO
89 GV ored 36' #3405 300 hp cat 3208 ATAAC side radiator, mountain tamer exhaust brake

Re: Air hose and tire pressure

Reply #2 –
Well the correct answer is have your coach weighted (most any truck stop)  then consult you tire manufacturer for the correct inflation. In the mean time at least 100 or so lbs in the rear, and close to max inflation on the front. It may make it ride rough but until you get a weight it's better to run on the high side. Yes you can use the on board air hose with the engine running. Or you can buy a small 150 psi portable 120v compressor. You can get a truck air chuck and truck air gauge from any NAPA, just take your hose with you to get the right fittings.
Bruce, Linda, and Macy
Zoey RIP 1/20/19
1999 U295 40' build #5400
2017 silver Jeep Wrangler, 1260 watts of solar on top
Moving around the country

Re: Air hose and tire pressure

Reply #3 –
Hi GeeBee, glad you are here.

Michelin RV Tires | View Michelin RV Tires load and inflation tables for...

Tire pressures should be based on individual corner (and tag) wheel weights.  The tire pressure charts ar for the axle so for the front take the highest of the two sides and use that. Round up and find the pressure on the chart.  Many add 5 psi to that.  Rear axle, take the max of the rear pair and use it, round up and look it up on the chart. I don't have a tag so I am not sure there but probably the same as each of the dual tires.

The basic rule is that all tires on the same axle are set to the same pressure, based on the heaviest side.

RV Tire Pressure

Buy a good tire pressure gauge.  Lots of good choices out there.  In general you might be able to add some air to a tire from the aux air connection.  Sometimes the air available at that port is just barely above what you want to add to the tire and it might be slow.  Your air supply may come from the engine air compressor and you may be able to get 110 psi or a bit more.  I have a 120v air compressor that at 150 psi will add air much faster.

Many get a tire pressure monitoring system.  These wil show you what yout tire pressures are in real time.  Some show tire temperature as well.  I have this one.
507 Series - 4 Flow Thru Sensor TPMS System with Color Display
Buy extra sensors as needed including some for your toad.

Lots of good choices for these as well.

Roger Engdahl and Susan Green
2001 U320 3610 #5879 (Home2) - 2014 Jeep Cherokee or 2018 F150
Hastings, MN

Re: Air hose and tire pressure

Reply #4 –
Quote from: GeeBee –
May I ask what others do to check and ensure proper tire pressures?
Would love to buy my own gauge etc...
Link below to a thread discussing tire filling devices.  You may find of interest:

Best tire inflator?

For the tire pressure gauge, I like the one linked below.  The "Dual Head Chuck Straight Back" (see photo) works great on rear duals.

Workhorse - 5-150 psi Digital Tire Inflator – Power Tank
1993 U280 SE 40' WTBI, Build: 4359
C8.3 300hp, 6-Speed, Exhaust Brake
960 watts on the roof (6 x 160)
Sorento (or BOLT) on a Kar Kaddy SS
"Nature abhors a vacuum"
 

Re: Air hose and tire pressure

Reply #5 –

I use this one and really like it.  I also had the outer rear valve stems turned sideways so they're easier to check.
Amazon.com: JACO FlowPro Digital Tire Inflator Gauge - 200 PSI: Automotive

As an Amazon Associate Foretravel Owners' Forum earns from qualifying purchases.
Forest & Cindy Olivier
1987 log cabin
2011 Roadtrek C210P
no longer 1999 36' U320 build #5522
2013 Rzr 570 & 2018 Ranger XP1000
2006 Lexus GX470
2011 Tahoe LT 4x4
Previous 1998 45' 2 slide Newell, 1993 39' Newell