Air pressure with the tire off

[PursuitInsight]

Hi,

I always check and fill the rear dually tires while they are off the rv.
I want 95 psi or 100 for extra safety and varying load.
Front are 110 and done easily.

i do not have valve extensions. even the back external tire is not accessible since the stem is short.

I only now realize that maybe the pressure will increase once the tires are back in, and pushed with the rv weight.

Am I right that the pressure will increase, how much should i put to get the proper result pressure

[time2roll]

http://www.blackjacktirerepair.com/valve-stems-components

[PursuitInsight]

turned out they had extensions. i could not trust those, not sturdy.

I removed the passenger side this evening, tomorrow, i will remove the driver side.

Money not well spent.

[PursuitInsight]

Thanks to all for the comments, i went to my local store, they will get back to me on tuesday. I will get long valve stems

[xctraveler]

Withdrawn

[JimM68]

When I got new tires, I had 90 degree valvestems put on. Fronts and outer duals are rotated to be directly accessible. Inner rears are rotated to stick out, plus a solid 3" extension, plus a flowthru TST pressure sensor.

I can easily check them all, just have to unscrew the sensors.

Rarely do though, the tst system checks them every 7 seconds or so...

[Chum_lee]

Checking tire pressures before every extended day of driving serves many purposes. First, you KNOW the tire pressure is correct for your application. Second the act of checking the tire pressure forces you to give the tires at least a cursory visual inspection for road hazard damage, nails etc., tread wear, unusual wear patterns (alignment) and tread/sidewall separation, etc.

Most tire failures give warning before they occur if you regularly check them out.

Many truckers carry a pipe or a mallet to strike each tire at the beginning of each shift. The familiar "thunk" tells you a lot, and, it's fast and easy.

Chum lee

[10forty2]

Dually Valve Stems

Do yourself a favor...order a set of these for YOUR specific model coach and have a truck tire shop install them for you. You won't regret it.

My coach had the braided extenders on it when I bought it. First trip....we blew a tire due to tire age and due to the extender leaking. Replaced all the tires, put new braided extenders and without fail, before every trip I had to add air because one of them was leaking. I replaced the valve stems with the ones linked above and for the past year and a half, I have not had to add air but once before a trip and that was because I didn't get the pressure gauge pushed on properly and let too much air out before I could check it.

And for the record.....I ALWAYS check the pressures in the morning when cold on travel day. I would suggest that everyone does as well, but that's individual preference I guess.

[Mile_High]

Any difference from weight is negligible. if loading the tire caused pressure to go up, the factory would have to give you a different PSI spec for your spare. (not saying your MH has a spare- but in general terms).

[wildmanbaker]

msmith1199 wrote:

PursuitInsight wrote:
Thanks for the replies.

I check the pressures once a year, before a longer trip. I will do it this evening. it allows me to check the disk and brakes pads at the same time.

From year to year, I can say that it does not change much. i have to add air every 2 years

I am thinking about extenders, maybe next year. I am getting older

You should be checking your tire pressure every few days when on the road and before every trip. I usually never have to add air either. But one time while camping at Vegas and getting ready to hit the road for the 500 mile drive home, I checked the tire pressure and found one of my inside dual tires with 30 psi. Only way I found that was by checking the pressure, the other tire was holding the weight up and you couldn't tell the inside was low. Put air in the tire and took it to a nearby tire shop and there was a nail in the tire. Had I not checked the pressure I would have driven 500 miles like that. Or more likely, I would have drive 100 miles like that then had a blow out in the middle of the Mojave desert.

Truck drivers check their tires every day.

Maintaining pressure in your tires is the best thing you can do for them. Stuff does happen on the road, so knowing things are as good as you can make them, helps maintain peace of mind, and the tires last much longer. Maintaining tire pressure is much easier than changing a tire, or waiting for road service to come and help.

[msmith1199]

PursuitInsight wrote:
Thanks for the replies.

I check the pressures once a year, before a longer trip. I will do it this evening. it allows me to check the disk and brakes pads at the same time.

From year to year, I can say that it does not change much. i have to add air every 2 years

I am thinking about extenders, maybe next year. I am getting older

You should be checking your tire pressure every few days when on the road and before every trip. I usually never have to add air either. But one time while camping at Vegas and getting ready to hit the road for the 500 mile drive home, I checked the tire pressure and found one of my inside dual tires with 30 psi. Only way I found that was by checking the pressure, the other tire was holding the weight up and you couldn't tell the inside was low. Put air in the tire and took it to a nearby tire shop and there was a nail in the tire. Had I not checked the pressure I would have driven 500 miles like that. Or more likely, I would have drive 100 miles like that then had a blow out in the middle of the Mojave desert.

Truck drivers check their tires every day.

[Effy]

PSI is not affected whether they are on or off the RV. Why do you take your wheels off?

[rgatijnet1]

Take your RV to a decent truck tire shop and tell them to change the valve stems to something that is accessible. These DO NOT have to be the flexible extensions since there are rigid valve stems and rigid extensions of almost any shape that can be used to make your task easier. There is no reason why you should have to remove the tire to add or check the air.

[Teacher_s_Pet]

Double Post

[Teacher_s_Pet]

Run TST Tire Monitor System keep an eye on pressures, add as needed (seldom), but every 6 months I do a actual per tire check with a very good quality gauge. I have more low pressure readings on the toad than the motorhome.