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Old 07-28-2016, 07:34 PM   #1
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Air compressor for tires?

Just put my first set of LT series tires on my tow vehicle and now need something that will actually work to inflate the tires up to 70-80psi!
Was a little upset that the mechanic that put the tires on the truck only had them inflated to 40psi (picked up the truck after the shop had closed), so I tried using my little portable air inflator thing that I have and it could hardly get the tires to 45psi.
Went down the street to the closest gas station and spent $10 in quarters and still only managed to get the tires to 60psi.
Needless to say I will be going back to my mechanics shop in the morning and have them finish inflating them but I would like to have something with me to do it myself when needed.
So what is readily available that I can purchase that will actually work?
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Old 07-28-2016, 07:48 PM   #2
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Old 07-28-2016, 07:48 PM   #3
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Check out Viair & ARB. Mounted my compressor and tank inside my tool box.
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Old 07-28-2016, 07:54 PM   #4
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I put Michelin Defender LT tires (load level E) on my 2015 Ram Laramie. I took one trip with the tires inflated to 75 lbs and about shook my truck to pieces on some of the roads on our way to Texas with my 7,600 lb (dry weight) TT. I let out 10 lbs of pressure and continued on my way@ 60 lbs and WHAT A DIFFERENCE in the ride quality.
When I got home, I sent a e-mail to Michelin requesting a recommendation on air pressure for my towing level. I got a very pleasant surprise when a Michelin technician called me to discuss this subject. After we talked about total loaded weight of the trailer and the 900 lbs tongue weight he recommended that I keep the E rated tired inflated to 52-55 lbs all the time, when towing and when not towing. He calculated the weighs and used the Michelin air pressure to load capability data to make this recommendation. I have since towed the trailer with the tires inflated to 57 lbs ( just a couple lbs extra for peace of mind) on a 1,000 mile trip and the trailer and truck were rock solid and the ride very comfortable.
The "moral of the story" is, it's the air that carries the load and the tires only need to be inflated to the degree that they will carry the load they are designed to carry at a particular air pressure. So why "over" inflate them to carry several hundreds of pounds that are not present when you tow your trailer. Inflate to match the weight!!!
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Old 07-28-2016, 08:31 PM   #5
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Viair 450P- will take my camper tires up to 125psi without waiting forever. I've gone from 108-125psi in just a few minutes.

http://www.learntorv.com/2016/05/pro...p-12v-air.html
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Old 07-28-2016, 08:37 PM   #6
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Quote:
Originally Posted by ependydad View Post
Viair 450P- will take my camper tires up to 125psi without waiting forever. I've gone from 108-125psi in just a few minutes.

Learn To RV: Product Review: Viair 450P 12v air compressor
Thanks, that looks like it will do the trick!
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Old 07-28-2016, 08:44 PM   #7
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I use a Lowe's Kobalt 3 gal. 110 V hot dog compressor. It will pump up to 150 lbs and the tool pressure can be adjusted. Small enough to put in your TV.

http://mobileimages.lowes.com/produc...13006440lg.jpg
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Old 07-29-2016, 12:34 PM   #8
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Quote:
Originally Posted by MT Biker View Post
Just put my first set of LT series tires on my tow vehicle and now need something that will actually work to inflate the tires up to 70-80psi!
Was a little upset that the mechanic that put the tires on the truck only had them inflated to 40psi (picked up the truck after the shop had closed), so I tried using my little portable air inflator thing that I have and it could hardly get the tires to 45psi.
Went down the street to the closest gas station and spent $10 in quarters and still only managed to get the tires to 60psi.
Needless to say I will be going back to my mechanics shop in the morning and have them finish inflating them but I would like to have something with me to do it myself when needed.
So what is readily available that I can purchase that will actually work?
I bought an 120 PSI air compressor/jump starter/12V power source/work light combo from West Marine for $120. It works great, is very powerful, and does not need an AC power source to run except for recharging and the charge lasts for a long time. And you can buy a maintenance agreement, then they'll replace it for free if it fails within 2 years, not bad!
WEST MARINE 1000 Amp Jumpstarter | West Marine
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Old 07-29-2016, 12:36 PM   #9
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All depends on your tires. If the take 80 lbs get one with a small tank. Since I have a generator I use a 120V air compressor.
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Old 07-29-2016, 12:53 PM   #10
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For (I think) $59 with coupon from Harbor Freight, I got a decent pancake style compressor that airs my tires up to 80 psi quickly and easily. It does require ac power, but I always have a generator to provide that if needed. Since we have a toy hauler, it doubles as an air source for the toys as well.

Been using it for two years with no problems.
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