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Old 02-18-2015, 09:27 PM   #15
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Originally Posted by Dr4Film View Post
If the CIP aim is 100 psi and the outside ambient temp was 0F and your tires now measured 80 psi, if you continued to drive in 0F ambient outside temperature then you are driving on an under-inflated tire which is 20% low of aim.

NHTSA states that a tire which is 25% low of CIP aim is basically a flat tire.

However, if the outside temp was to increase significantly for your days drive such that the adjusted CIP for outside temp was back to the 100F then you would be OK.

Dr4Film ----- Richard
They came up to pressure when it was still 0 degrees.
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Old 02-18-2015, 09:51 PM   #16
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.Yes they did/ They flex and the pressured comes up.
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Old 02-18-2015, 09:55 PM   #17
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I did it at the cat in vegas...just drove two wheels on the scale

also you can just pull one wheel on the trailer scale
The ones around here are all built above ground and there's no way to do it with the scale up so high. In WA state they leave the scales on when the scale is closed and they have room to do each wheel or a whole axle and one side. Either way you get the weights you need.
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Old 02-18-2015, 10:57 PM   #18
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Weigh-In Suggestion

Jondrew, If you are in Orlando/Oviedo area, you might want to consider making a bit longer drive to get all 4 corners weighed independently in Merritt Island. rvsafety.com is based in Merritt Island and has teams who travel the country working RV Shows and reunions weighing rigs. They are experts and print out a report for you. They are not always in town so check their website for contact info and see if you can get hooked up. I will soon be taking mine over there as well, contacted them on email. Happy Trails!
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Old 02-18-2015, 11:46 PM   #19
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The placard inside says 105 PSI for the rears if I remember correctly. That's where they are set. I think the fronts are 120.

Been reading posts about running well below that to increase ride comfort. Need to get actual axel weight to do that per the posts I've read. Seems to be one scale about an hour away from me that gives true per axel weights. I'll have to give it a whirl.
you won't get a better ride running those 255's lower... they are too small to lower the pressure with out making them wobble
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Old 02-19-2015, 02:41 AM   #20
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Google public scales or check yellow pages. Farm and feed supply stores, large landscape suppliers, and others will have scales available.

I use a farm supply very near me. Usually they weight a whole truck, however they can do four corner weights for an RV - drive on the scale with left front only, pull forward till only left rear is on, drive up the street and turn around to repeat the other side.
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Old 02-19-2015, 04:25 AM   #21
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Once you Weigh your coach here is a guide for Tire inflation......
Load & Inflation Tables | Michelin Truck

Happy Rving.......
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Old 02-19-2015, 08:04 AM   #22
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Here are some links to excellent information regarding RV tires, weights, setting proper CIP, etc.

This information will help the Noobies but also remind any seasoned RVer's about how important this information is regarding their RV tires which could save a life.

RV Tires 101 - RV UNIVERSITY

How To Set the Tire Pressure in Your RV

http://www.trucktires.com/bridgeston...v_brochure.pdf

Read and Heed.

Dr4Film ----- Richard
Attached Files
File Type: pdf RV Tire Weigh Form.pdf (447.2 KB, 13 views)
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Old 02-19-2015, 10:11 AM   #23
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you won't get a better ride running those 255's lower... they are too small to lower the pressure with out making them wobble
I would not be surprised if you're right. This is mostly curiosity. Like others have said, I'm probably running at or close to the max on the rears to begin with
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Old 02-19-2015, 10:39 AM   #24
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I would not be surprised if you're right. This is mostly curiosity. Like others have said, I'm probably running at or close to the max on the rears to begin with
do you have a washer?
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Old 02-19-2015, 05:01 PM   #25
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do you have a washer?
Yes, she sits in the right seat.

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Old 02-19-2015, 05:31 PM   #26
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Yes, she sits in the right seat.

why I was asking was that adds a lot to the very rear of the coach...

that and if you have a resident fridge,..there are two more batterys on the rear plus the weight of the fridge all on the same side...

could be enough to make a handling issue
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Old 02-19-2015, 05:52 PM   #27
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No washer. Res fridge, 4 coach batteries and inverter
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Old 02-19-2015, 06:20 PM   #28
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We got weighed at Freightliner last week and got the news that the RR is heavier the than
LR (by about 2,000 pounds!). We do have the washer/dryer and residential refrigerator. Not sore that we can move enough stuff to compensate for the difference.


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