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Old 01-29-2019, 08:07 PM   #1
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Question Tire pressure

Hello my happy campers!!! Quick question on optimal tire preasure for 245/70R 19.5G
Looking at the viair tire pump and wanted to make sure it can handle rv tires? Thank you again in advance
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Old 01-29-2019, 08:26 PM   #2
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Hello my happy campers!!! Quick question on optimal tire preasure for 245/70R 19.5G

Looking at the viair tire pump and wanted to make sure it can handle rv tires? Thank you again in advance

Which Viair compressor are you looking at? There are several models with various specifications/capabilities.
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Old 01-29-2019, 08:53 PM   #3
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Hi thank you for responding right now considering the
VIAIR Corporation - 400P-RV Automatic Portable Heavyweight Series Air Compressor
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Old 01-29-2019, 10:33 PM   #4
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i have the rv400p and i use it to take my tire pressure up to 110psi. i think it has a duty cycle of something like 15 to 20 minutes and then it must cool off. there is a rv450p model which goes to the same pressure and has a continuous duty cycle. the rv400p works just fine for us.
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Old 01-30-2019, 05:51 AM   #5
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You guy's are awesome on here thank you chickdoe for your response you have made my decision easier for purchase
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Old 01-30-2019, 06:34 AM   #6
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Optimal tire pressure is whatever the manufacturer stamps on the sidewall of the tire in my opinion.
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Old 01-30-2019, 06:43 AM   #7
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Rv in storage

Thank you I wanted to know if you could tell me my class A is in storage and forgot what the pressure was?
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Old 01-30-2019, 06:46 AM   #8
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Thank you I wanted to know if you could tell me my class A is in storage and forgot what the pressure was?

Gotcha. I've known of people who think that is only a MAX on the side of the tire, and if they have less than a full load, perhaps they should deflate some.

Happy travels!!
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Old 01-30-2019, 06:49 AM   #9
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Thank you, yes I agree less than max load unless loaded
Is that normally less then 95 correct?
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Old 01-30-2019, 09:53 AM   #10
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There Load and Inflation Charts for MICHELIN RV Tires and also GOOD YEAR RV tires on line. they will guide you through the proper inflations.
Good luck and safe travels.
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Old 01-30-2019, 10:51 AM   #11
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Hello my happy campers!!! Quick question on optimal tire preasure for 245/70R 19.5G
Looking at the viair tire pump and wanted to make sure it can handle rv tires? Thank you again in advance
Here's a picture of the data sheet posted next to the drivers seat in my 2016 30DS. It specifically shows 82 PSI COLD.
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Old 01-30-2019, 11:09 AM   #12
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Welcome to the forum!

We recently purchase the Viair 450P RV and love it. It's a little pricey but will last for generations.

Whatever air pump you get, it's a wise choice. Finding and getting access to air at fuel stops can be pretty difficult.
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Old 01-30-2019, 07:29 PM   #13
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Thank you very much edm
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Old 02-27-2019, 07:42 PM   #14
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My Viair 400 takes my Jeep tires from 15-18 psi back up to 33 like itís nothing. It trips me out, itís such a little machine. Havenít used it on my FR3 yet, but I have no doubt it will do the job.
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Old 02-27-2019, 09:10 PM   #15
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Wow you guys are awesome for the response on this topic, I bought the viar 400 the other day and tried it on my car tire and was fast. No doubt this was a great purchase and expect it to work fine on the rv thank you papaduck for the picture mine is in storage so I forgot what the preasure was really appreciate your feedback everyone. Think spring lol
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Old 03-08-2019, 01:41 PM   #16
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Hello my happy campers!!! Quick question on optimal tire preasure for 245/70R 19.5G
Looking at the viair tire pump and wanted to make sure it can handle rv tires? Thank you again in advance
This is what we got and performs great.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1
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Old 03-08-2019, 02:14 PM   #17
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Thank you very much for confirming a great air compressor that gets the job done and stores nicely. So went out and bought myself one
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Old 04-30-2019, 05:35 PM   #18
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Thanks for the info
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