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Tire pressure as per weight readings

Yahoo Message Number: 99078
After attending the FMCA rally, I had my coach weigh.  I had my doubts that I was over as my wife and I go out a couple of times a months and it is just the two of us. We are rather underweight as I suspected we would.  I have what appears to be an unsurmountable problem as well as question the weight staff recommendation.

Problem: heavy on the drivers side by over 800 lbs. that side has the generator, sofa, and kitchen (slide).  Difficult to change those items.

Advice:  my tires are Dunlop (steering) and Good Year (drive) and good year recommends 75-80 lbs calculated by weight.  I currently run 120lb (front) and 110 (rear) as per Country Coach. The weigh station recommends following the manufacturer recommendation and recommended that I decrease the tire pressure 5 lbs per trip until I get to 80 lbs and see how the ride is.  Really, from 120 psi down to 80 psi??? Opinions and experience please.

BTW, the FMCA rally was a blast! It was their western rally and our first.

John & Carol Jones

2001 Country Coach Allure-32'

#30672

Re: Tire pressure as per weight readings

Reply #1 –
Yahoo Message Number: 99079
BTW, my total weight is 6800 lbs under the GVWR.

John & Carol Jones

2001 Country Coach Allure-32'
#30672

Re: Tire pressure as per weight readings

Reply #2 –
Yahoo Message Number: 99087
I had a similar issue with my 98 36' Allure with one DS kitchen slide.  CC was able to transfer some of the weight by finely adjusting the ride height valves.  I repacked the coach to put the tool box and other heavy items on the PS of the coach, but the difference was still close to 700 lbs.  At the time we inflated the coach by doubling the weight of the the heaviest corner.  So if the left front is the heavier, you double that and inflate accordingly and of course that applies to the rear, too.  At the time we also added 10 lbs of pressure if we drove over 65 mph.  When CC started having tire recalls and tire separation issues then to prevent failures tire pressures were raised.  I assume you are running 12R tires or maybe 295's.  Even with 120 lbs up front on my 2004 coach one of the front original Toyo tires started to separate, go figure.

The old system of weighing and inflating to the weight didn't seem to take in driving conditions and atmospheric conditions.  I have learned the hard way.  So for safety I would inflate to with in 95% of the placard.  Inflating to the tables will leave you with a cushy, sloppy, un-responding and dangerous  drive.  Owners with short coaches complain about their coaches drifting, being subject to cross winds, and speeding 18 wheelers going bye.  Lowering pressures to 85 lbs on the rear of my 36' coach made the coach unstable in cross winds, especially with 3/4 trailing winds and driving curvy  roads with 18 wheelers passing was a real  white knuckle experience.  TWI 98 Allure 30255, 2004 Intrigue 11731  PS.  You can't believe what having a tag axle will do for handling and driving experience.  Its a Magnitude improvement in performance!

Re: Tire pressure as per weight readings

Reply #3 –
Yahoo Message Number: 99090
The placard on your coach was replaced for legal reasons. It was based on Toyo tires. You need to repack coach getting a much weight off the  DS and buy tires rated for 7000 lbs  that should put you in safe range.