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Old 08-23-2016, 12:18 PM   #1
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Motor home weight

Had the motor home weighed today, 04 Winnebago sightseer 31 ft. 1/3 tank water full tank gas. Front axle 5320 rear 10300 lb. Tires are 245 70 R 19.5. Looking a tire pressure chart I can lower pressure in tires from 80 to 70 psi.If I am looking at tire pressure chart wrong, some one point out my mistake.Using Good year load chart for RVs. Thanks.

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Old 08-23-2016, 12:23 PM   #2
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You might want to run them a little higher than necessary because one side may weigh more than the other.

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Old 08-23-2016, 01:14 PM   #3
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This is what mine says for a 33l
Sightseer. 80 psi cold.
2003 Sightseer 33L
Ford F53
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Old 08-23-2016, 01:25 PM   #4
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Don't know your rv - but according to the chart - you will still have more than enough rating up front...
but maybe 75 on rears might be better !
but 5k only on the front axle ?!?! that's light
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Old 08-23-2016, 01:28 PM   #5
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Originally Posted by Johndale View Post
Attachment 136897
This is what mine says for a 33l
Sightseer. 80 psi cold.

That is the I.D. plate and is for general application. Your coach manufacturer has no idea what you plan on running for ACTUAL weight. It obviously won't kill you to run those suggest psi's. But, in reality, you should do what the OP did and, set that coach up for a trip, full water (I do full water 'cause you never know when you might be stranded without hookups), full fuel, all the equipment/camping gear/chairs/clothes and what not. Then run it down to some scales and see what it ACTUALLY weighs.

Then, based on whom ever made your particular brand/size/load rated tires, go to their weight chart and see what THEY recommend, for your particular application.
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Old 08-23-2016, 01:45 PM   #6
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Coach drives great,I start every trip with full tank of fuel and about 1/3 tank water. Water tank is behind axle,fuel never goes below 1/2 tank.Will probable set tire pressure at 70 front 75 rear.
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Old 08-23-2016, 02:01 PM   #7
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Since it drives great at 80# in the front, why lower it to 70#
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Old 08-23-2016, 02:33 PM   #8
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Originally Posted by Mich F View Post
Since it drives great at 80# in the front, why lower it to 70#
It drives nice until I hit a chuck hole,sounds like it is coming apart.
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Old 08-23-2016, 03:47 PM   #9
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First, take a close look at tread wear across the width of the tire. If it's even, shoulder to center to shoulder, the 80# isn't hurting anything. To get a better ride you can go to 75 or 70 but you may find it doesn't track as well at the lower pressures as the sidewall will be flexing a bit more than you saw at 80#. If it still tracks smooth and you don't get any more side push with a good crosswind or when an 18 wheeler is passing, go for the lower pressure. A 5 or 10 pound reduction may be a great help in ride, or may give you very little. You're now fine tuning the suspension for your particular coach and your comfort and handling. Any choice you make in these areas is correct, you're just making it more correct for how and where you drive. Good luck and safe travels.

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