Compressor Recommendations

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Joined
Nov 17, 2019
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991
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Prince William, VA
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2020
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Newmar
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Ventana 4326
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2020 Ford F-150
I know some have installed air doublers in their units to allow them to use onboard air for filling their tires, which is pretty elegant but I have opted to carry a stand-alone compressor which came recommended over on IRV2. Specifically, I carry a Porter Cable 150psi 2scfm Portable Air compressor with an array of air tools. It works well for most jobs but I’m finding it takes forever to bring my tires up to pressure before I hit the road - 6-8 minutes per tire. Usually my front tires are fine but I’ve found before departing that my two of my drive tires - have dropped down to 80 or 90psi from 118psi whenever i arrived, after sitting week.

So, that’s moving a lot of air at a pretty high pressure, I get it but i’m Looking to see if others have found reasonably priced portable compressors that handle this task better.

Also, if you have an air doubler installed in your unit, I’d be interested in hearing about how it performs when bringing your tires back up to pressure.
 
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2017 Chevy Colorado
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No
I use the VIAIR and yes it takes a long time but as you know it's not something you have to do that often.

https://rvforums.com/threads/viair-rv-tire-inflation-portable-tire-inflator.127/

I had an issue with an inner tire dropping excessively, thanks to the shell answer man @Chuggs he nailed it again and suggested it was a loose valve extender. Yep, I torqued it a little tighter and tire pressure maintained. You should not see any significant loss even after weeks of just sitting. Temp/Altitude changes yes, but deflation no.
 
Joined
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Location
Spicewood, TX
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Ventana 4369
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2018 GMC Canyon or 2005 Jeep Wrangler
John, if you're losing 20-40 psi after a week, you apparently have a leak. Are you measuring the 118 psi while the tires are hot and measuring the 80-90 when cold? That could make up for some of the loss but not 40 psi.
 
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No I’m inflating to 118psi cold. Then after sitting for maybe 1-2 weeks at a campground when doing my pre-deployment checks, I always check tire pressure manually on every time. The last two times I’ve done this, 2-3 tires have been at between 80-90psi cold.

I haven’t checked pressures when tires were hot and I’m always doing this around 8-9am in the morning, so they haven’t even been sitting in the sun for long if at all.

Don’t think I have a leak in the form of a puncture but a loose valve makes sense. Will definitely do a thorough inspection when I get back and check pressures again to see where they are after sitting for three days.
 
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Which exact tires are deflating?

Out of curiosity what tire pressures are you setting on all of your tires? 118 seems high and would only be the fronts.
 
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I’m leaning towards loose valve stems, too. My current coach can sit for a couple of months, and maybe I have to add 5 lbs of air.

I have the same compressor...nice little machine.
 
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2018 GMC Canyon or 2005 Jeep Wrangler
I'm with you Neal, 118 psi in rear tires sounds extreme.
 
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2017 Chevy Colorado
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No
My pressures are:

Fronts: Chart says 95, I do 100 to be on the + side
Rears: Chart says 75, I do 85 again to be on the + side

Corner weights are ideal, Flying J weights are better than nothing, trust the charts for your tire specifics.
 
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I run 115 in front and 90 in rear duals and tag.
 
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On my DS 4369 I run 110-115 front and 82-85 rear after I did four corner weight check and used the Michelin tire chart.
 
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2014 Honda CR-V
I run 115 in front and 90 in rear duals and tag.
Me too! In our case, that's about 5 PSI over what the Michelin chart (and Newmar) says, based on corner weights. We still get a smooth ride and I prefer having a little margin above recommended pressures.

As for the OP losing tire pressure over a relatively short period of time, something is amiss! Our tires rarely lose any pressure, even over a period of months. I think the Ventana still uses valve stem extensions rather than one-piece extended metal valve stems. We had some issues with the extensions on our 2014 Ventana LE.

ADDED: The fact that the OP doesn't experience air loss in the steer axle tires makes me even more suspicious of the extensions as being the culprit. The front tires don't use extensions; the drive/tag axles do.

TJ
 
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Joined
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My 2017 Ventana 4369 has solid valve stems. If the OP is using a TPMS, the leak could be attributed to the sensor not sealing properly.
 
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My 2017 Ventana 4369 has solid valve stems. If the OP is using a TPMS, the leak could be attributed to the sensor not sealing properly.
Certainly a possibility. Something is allowing a loss of air; TPMS sensors, bad valve stems, loose valve stem cores. BTW, to the OP: have you checked the tightness of your valve stem cores? We, along with others, have found the cores to be loose, on occasion. I check mine every few months, just to be sure.

TJ
 
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On my DS 4369 I run 110-115 front and 82-85 rear after I did four corner weight check and used the Michelin tire chart.
What he said
 
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West Palm Beach Fl
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Buick Enclave
Neal

What is your front end weight? Your psi seems pretty low for steers.
 
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Prince William, VA
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Wow, lots of great food for thought. So a couple of things happening now.

1. Four corner weight is happening tomorrow. So I expect my pressures will drop on the after doing that and knowing exactly what pressure to use. I’ve been running at max psi as it came from the factory (I know, I know...). Found a spot nearby where I can get my four corner weight.

I don’t have my TPMS sensors on the stems because I ran into an issue with the valve stem extenders on the drive wheels not giving me enough space. So it’s not a tpms issue.Ordered longer valve stem extenders - single piece they will be here tomorrow and also get installed.

Also did a thorough inspection of all tires, outside, tread and inside. Got nice and dirty crawling around like a pig in the mud, but couldn’t find any tire damage and played with each valve stem to see if I could detect and leaks, couldn’t really find anything of note.

Hopefully, between getting the pressures calibrated to the weight and swapping out the valve stems, the issues will be resolved.
 
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Location
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TOW/TOAD
2017 Chevy Colorado
Fulltimer
No
Receipt looking thing is Newmar's four corner weight at FPU. RVSEF was later, then Dec 2018 was the Flying J weigh in prior to HWH Active Air install.

Michelin XRV 305/70R22.5

https://www.michelinrvtires.com/reference-materials/load-and-inflation-tables/#/

IMG_3476.png

RV-SEF.png

IMG_1264.png
 
Joined
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Yup. Makes sense. I am right at 14000.
 
Joined
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Messages
991
Location
Prince William, VA
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TOW/TOAD
2020 Ford F-150
So got our four corner weights done. We're 400lbs over on the front axle . Looks like we've got a bit shuffling to do but overall, pretty satisfied. PSI's shown are what we'll be putting them at. We know rear steers could probably go down to 75psi but we think we'll do 80 just to keep life simple. Previously we'd be running 120 everywhere in the absence of any real knowledge of what our weight was.

A little concerned about the front being so overloaded by 400lbs. I'm not sure how much we can do about it though. We don't have anything particularly heavy up front. I think the heaviest thing might be the domestic freezer and slide out. Tools, compressor, winter clothes - it's all at the back just before the drives.

I know as we burn fuel that will lighten a bit, but with diesel at 6.8lbs/gallon, we'd not be underweight on the front until we're at a half tank. As for the TPMS and valve stems, the extenders weren't delivered on time. Should be in some time today, hopefully that will solve the issue with pressure loss and allow me to get my sensors on the wheels already.
 

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Joined
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Just curious, was this done with your whole family in their normal seated positions?
 
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