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Old 02-18-2015, 06:20 AM   #1
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Setting Tire Pressure - where to weigh my rig in Orlando

I want to experiment with my tire pressure on my 2014 Excursion 35C. First step it to weigh the rig in towing configuration. Anybody know of where there are scales I can access in Orlando, preferably in the Oviedo or east Orlando area?
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Old 02-18-2015, 06:25 AM   #2
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Weighing your MH in a towing configuration won't matter .Your axle weight is what will determine ( each corner would be better ) what your tire pressure should be. The toad will be weighed separately and won't be figured in the calculation.
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Old 02-18-2015, 07:02 AM   #3
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Escapees RV club has a Smart Weigh site in Bushnell, FL. They weigh your RV the proper way. From their procedures you will be able to answer any questions you have about the weight of your RV.

You do not have to be a member to get weighed. Same price for nonmembers.
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Old 02-18-2015, 08:54 AM   #4
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Go to this website to locate scales near you.

http://catscale.com/cat-scale-locator

I listed the 3 in the central Florida area below.

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Old 02-18-2015, 06:52 PM   #5
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Originally Posted by pasdad1 View Post
Go to this website to locate scales near you.

CAT Scale Locator | CAT Scale

I listed the 3 in the central Florida area below.
Thanks!
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Old 02-18-2015, 08:14 PM   #6
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Escapees RV club has a Smart Weigh site in Bushnell, FL. They weigh your RV the proper way. From their procedures you will be able to answer any questions you have about the weight of your RV.

You do not have to be a member to get weighed. Same price for nonmembers.
Thanks,

Bit of a haul for me, but the truck stops are not exactly close either

Escapees RV
Site #3: Sumter Oaks, Bushnell, FL
Appointments available: Monday Friday, 9 am 12 pm
Call 717-805-3400 to reserve a time slot.
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Old 02-18-2015, 08:22 PM   #7
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I want to experiment with my tire pressure on my 2014 Excursion 35C. First step it to weigh the rig in towing configuration. Anybody know of where there are scales I can access in Orlando, preferably in the Oviedo or east Orlando area?
your rear tires max out at 5000 each....20,000 gvw

you better run the rears at max.... bet your drive axel is real close to max...
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Old 02-18-2015, 08:25 PM   #8
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Originally Posted by pasdad1 View Post
Go to this website to locate scales near you.

CAT Scale Locator | CAT Scale

I listed the 3 in the central Florida area below.

Attachment 86382

Attachment 86383
Trouble with the CAT scales is that most, if not all, can't do individual wheel weights like you need for accuracy. Axle weight is better than nothing but still not what you want.
Usually one side is heavier than the other. Our passenger front is some 600#'s heavier than the drivers side. That's enough to require more air across the whole axle to compensate. Same with the rear although there is the drivers side that's heavier and again, it's enough to need more air on all tires on that axle.
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Old 02-18-2015, 08:25 PM   #9
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I'm betting 17,500 on the rear if you are loaded ... with washer /dryer

if you are gonna tow with a trailer bring it.. it will affect the drive axel weight..
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Old 02-18-2015, 08:28 PM   #10
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your rear tires max out at 5000 each....20,000 gvw

you better run the rears at max.... bet your drive axel is real close to max...
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.
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Old 02-18-2015, 08:28 PM   #11
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Trouble with the CAT scales is that most, if not all, can't do individual wheel weights like you need for accuracy. Axle weight is better than nothing but still not what you want.
Usually one side is heavier than the other. Our passenger front is some 600#'s heavier than the drivers side. That's enough to require more air across the whole axle to compensate. Same with the rear although there is the drivers side that's heavier and again, it's enough to need more air on all tires on that axle.
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
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Old 02-18-2015, 08:46 PM   #12
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Let me tell you a story. Last week we put the rig in the shop where it was 60 degrees. We aired them up to 100 lbs. I parked the rig in front of the house and we loaded it and it sat overnight. In the morning the tires were at 80 lbs. It was 0 degrees. We started on the road and I monitored the TPMS. In 20 miles they were back at 100 psi.

Now what if I had aired them up to 100 psi at 0 degrees. After 20 miles what would they be at?

Now we are where it is warmer and they are running 105 psi.

Think about this a while.
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Old 02-18-2015, 09:07 PM   #13
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If you can wait to weigh until you're on the road, crossing state lines, you'll find Truck Weigh stations. Pull into them (if they aren't super-crowded) and ask to be weighed. If you ask nicely, they can even give you a printout.

Mississippi...just one more thing I like about that state!
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Old 02-18-2015, 09:17 PM   #14
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Let me tell you a story. Last week we put the rig in the shop where it was 60 degrees. We aired them up to 100 lbs. I parked the rig in front of the house and we loaded it and it sat overnight. In the morning the tires were at 80 lbs. It was 0 degrees. We started on the road and I monitored the TPMS. In 20 miles they were back at 100 psi.

Now what if I had aired them up to 100 psi at 0 degrees. After 20 miles what would they be at?

Now we are where it is warmer and they are running 105 psi.

Think about this a while.
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.

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