Tire pressure equalizing - what's the thing called?

[ExtraSlow]

hey, you know how some off-road people lower tire pressures when hitting the trails? I don't do that, but I'm looking for information on how they do it. There's some kind of device that screws into the valve-stem and lowers it to a pre-set level, i think. And maybe that thing actually connects two or four tires so that the pressure in each is exactly equal.

What's that thing called?

I want my TPMS to show the same number on the dash to satisfy my OCD, and it's occurred to me that there may be a hardware solution here.

[Tik-Tok]

I believe its called a tire deflator.

[BerserkerCatSplat]

They're just called tire deflators. Pretty simple, not super accurate though.


https://www.youtube.com/watch?v=Lb6d0_jLkUs

My inflation system just uses an air hose that's been tee'd off to four locking tire chucks (like these (https://www.amazon.ca/gp/product/B078WVQL31)) off a single regulator, so they are all inflated to the exact same pressure.

[ThePenIsMightier]

You put the four TPMS inside a chunk of PVC pipe and fuse caps on it with a valve. Pressurize it to 32psi and store it in the vehicle.
Profit.

[dirtsniffer]

hey, you know how some off-road people lower tire pressures when hitting the trails? I don't do that, but I'm looking for information on how they do it. There's some kind of device that screws into the valve-stem and lowers it to a pre-set level, i think. And maybe that thing actually connects two or four tires so that the pressure in each is exactly equal.

What's that thing called?

I want my TPMS to show the same number on the dash to satisfy my OCD, and it's occurred to me that there may be a hardware solution here.

your tires will leak air at separate rates over time, combined with temperature differences and the accuracy of the sensors, I suggest you forget all about it.

as for 'airing down' or whatever, people I know use the back of the tire pressure gauge.

[ExtraSlow]

They're just called tire deflators. Pretty simple, not super accurate though.

My inflation system just uses an air hose that's been tee'd off to four locking tire chucks (like these (https://www.amazon.ca/gp/product/B078WVQL31)) off a single regulator, so they are all inflated to the exact same pressure.
Hmmmm, so locking tire chucks and a hose and I can use one deflator or just manually control from there. Hmmmm.

- - - Updated - - -


your tires will leak air at separate rates over time, combined with temperature differences and the accuracy of the sensors, I suggest you forget all about it. This is the sensible answer, and probably the right solution. But maybe I just want to fuck around with it anyway.

[pheoxs]

All you need is a tire pressure gauge. When you partially put it on and push the valve stem it lets you air. Just keep doing that until you get down to the pressure you want. Then have a little air compressor that plugs into your cigarette lighter to refill your tires higher when you want to go that route. And just use the gauge to make them all match.

Compressed air comes out quickly. It only takes a minute to deflate a tire from 30 to 20 psi by poking the valve stem. Unless your talking something automated which seems overkill

[ExtraSlow]

All you need is a tire pressure gauge. When you partially put it on and push the valve stem it lets you air. Just keep doing that until you get down to the pressure you want. Then have a little air compressor that plugs into your cigarette lighter to refill your tires higher when you want to go that route. And just use the gauge to make them all match.

Compressed air comes out quickly. It only takes a minute to deflate a tire from 30 to 20 psi by poking the valve stem. Unless your talking something automated which seems overkill

This is true and you are missing the point.

[gpomp]

https://morrflate.com/

[dirtsniffer]

I think you should buy an H1

[BerserkerCatSplat]

https://morrflate.com/

Yeah that's the fancy version of my setup. Simple and works great.

[Tik-Tok]

Switch your dash units to Imperial instead of metric. Much easier to get them all the same.

[ExtraSlow]

Switch your dash units to Imperial instead of metric. Much easier to get them all the same.

That doesn't help as much as you think since the ford goes by increments of 5 kPa.

[Sentry]

What's that in football fields per bald eagle?

[colsankey]

7 landing strips

[ExtraSlow]

2 pints of freedom

[vengie]

Are you looking for something like this?
https://www.psitireinflation.com/how-it-works

Many service companies use these systems when driving lease roads/ highways frequently.

[killramos]

G63 6x6 has a system like that stock with beedlocks.

Just buy one of those.

[ExtraSlow]

I may see about doing a DIY version of that Morrflate system. Have spent a lot of time adjusting tire inflation in my life, and even the two-tire system sounds like it would make it much easier. Plus tinkering with shit like this is fun until I get distracted and forget about it for 6 months.

Anywhooo, thanks guise!

[LilDrunkenSmurf]

Yeah that's the fancy version of my setup. Simple and works great.

I want one of these. Even a DIY version like you have. Ideally with a pressure gauge built in, and maybe a release button?

[e31]

https://www.princessauto.com/ccstore/v1/images/?source=/file/v5506162145180302441/products/8687089_A0CG_00_01.jpg&height=328&width=328

I just use one of these. Clip it on the valve stem then press the air bleed button (near thumb) till I reach desired pressure.

Airing up is the same process, just attach to air supply and use trigger to inflate.

[dj_rice]

Can you scroll to display radio instead of the TPMS then you cant see the pressures and no anal

[lilmira]

For fun I topped up my tires during the cold snap with my little hand pump for bicycle since I didn't want to deal with the cold air hose lol. It actually wasn't too bad for a few pounds, ~20-30 pumps. Felt like I was a tire pressure artist.

For TPMS, is it usual for most TPMS to be calibrated for sea level at the factory? My two sets are all reading ~4lbs less than a barometric gauge. I have two digital gauges and they read the same.

[ThePenIsMightier]

Car sitting in driveway may have higher starting pressures for tires that have been in the sun.
This fails to keep me up at night.

[Twin_Cam_Turbo]

It’s a lot easier to buy a vehicle without TPMS or remove the TPMS and just have a single warning light of evenness for your OCD.

[SJW]

104270

This is how I live my life.

[ThePenIsMightier]

104270

This is how I live my life.

This SJW is worse than Hitler!

[jutes]

Fucking kPa making it look worse than it is.

[ExtraSlow]

SJW is Zorg.
104271

[dj_rice]

This SJW is worse than Hitler!

Single Jehovah Witness?

[ExtraSlow]

Just thinkin this morning.
104692

[killramos]

One side of the truck in the sun? Haha

[ThePenIsMightier]

LoL!
I used to AutoX where a bunch of the people knew enough to realize that tire pressure was important and some had even bought fancy, digital gauges.
But they were obsessed with trying to maintain the cold pressure... Like, it's July and you drive your car here and then you absolutely bagged on your tires for two solid minutes, so rushing around your car while your brakes are still smoking, is not going to shave time of your next lap.

[Tik-Tok]

Just thinkin this morning.


Might be a good day for a microdose, before that OCD drives you insane.

[ExtraSlow]

Might be a good day for a microdose, before that OCD drives you insane.
It may be too late brother.

[tirebob]

It may be too late brother.

Dude... Seriously... Change your readings to PSI and relax! :)

[haggis88]

Just do this


https://www.youtube.com/watch?v=XXOPocPqNE0

Also, I tried something similar with a 4L milk jug, just to see if it could be done.

It exploded at about 20psi :rofl:

I didn't watch the video to see if he mentions it, but a standard valve stem hole is 25/64" drill bit