those with MTR's, what do you air down to? - Ranger-Forums - The Ultimate Ford Ranger Resource


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Old 05-07-2009
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those with MTR's, what do you air down to?

went wheeling last night, and only aired my MTRs down to 18 lbs so i could get it home without airing up.

but im curious how low i can take them...
working on an onboard air setup, so i can go as low as i need and fill up when i get off the trail
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Old 05-07-2009
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I would say 10 pretty easy. I never went lower than 10 myself.
I usually stayed in the 15-18 range if I was driving home.
If you need a cheap compressor until you get on-board air, do a google search for mv-50.
Fairly cheap and works pretty well. I used one for a long time airing up 33's (mine and my buddy's jeep), until one of the o-rings went out and I couldn't find a replacement that worked. I gave it to my friend.
http://www.amazon.com/Q-Industries-M.../dp/B000BM8RT8

Then I bought this one. Pumps faster and stays cooler. I don't know how reliable they would be as an on board compressor with a tank though. That was my initial plan but I moved, then sold the sport trac.
http://www.amazon.com/Q-Industries-Q...=pd_sbs_auto_8
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Old 05-07-2009
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When I had 'em, 10psi. They were 12.50's on 10's....and I nver had any beat holding issues.
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Old 05-07-2009
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okay, im on a 8" wide wheel if that makes any difference
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Old 05-08-2009
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i run 15 if i am drivin home on them. i have gone 10 without any issues on a 8 inch wheel.
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Old 05-08-2009
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i would guess 8-10 but that 8 is pushing it.
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Old 05-09-2009
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lol, why can't you just stop at the nearest gas station and air up on your way home? that's what I would do.
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Old 05-10-2009
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Quote:
Originally Posted by crazymikey View Post
lol, why can't you just stop at the nearest gas station and air up on your way home? that's what I would do.
Some of us don't wheel in the mud hole behind a gas station, haha.
One of the places I used to go all the time was 30-40 miles from a gas station.
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Old 05-10-2009
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Originally Posted by zabeard View Post
i would guess 8-10 but that 8 is pushing it.
agree i run 11 with my 31x10.50s and 15x7 wheels i can run that all day long and not have a problem

Last edited by Downey; 05-13-2009 at 09:33 AM.
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Old 05-10-2009
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i was running 8 psi on 10 in rims without a problem. if i had 8 in rims id be around 6. but mine are 33" claws. ive seen people down at 6 with mtrs with no problems. the ride and traction you get in single digit psi is unbelievable. just experiment with it. start at 12 and work it down over the course of the day.
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Old 05-11-2009
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I've had my rears down to 6 before, but i only ran one easy trail, and i also have virtually no weight on my *** end.

the front's I've run at 10-12, but if its slippery i try and keep them up around 15 cause I've seen plenty of people slide into holes and crap then pop the bead.

I've driven a bit at 12, hell my rears are at 15 right now, you just gotta be careful.
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Old 05-11-2009
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Quote:
Originally Posted by brianjwilson View Post
Some of us don't wheel in the mud hole behind a gas station, haha.
One of the places I used to go all the time was 30-40 miles from a gas station.
hey there aint any bad thing about gettin your truck muddy behind a gas station lol :)

but yeah, all the trails where i go are around 30 miles from a gas station
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Old 05-11-2009
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hey there aint any bad thing about gettin your truck muddy behind a gas station lol :)

but yeah, all the trails where i go are around 30 miles from a gas station
except its most likely trespassing

i just get my CO2 tank filled, it lasted me 4 trips.. airing up my tires, some 42s, some 32s, reseating a bead.
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Old 05-13-2009
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just went wheelin this past weekend and ran at 15 psi no problems. i got one of them $69 air compresors from 4wheelparts and it works awsome for airing back up at the end of the day.
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Old 05-13-2009
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Remember airing down below 10 PSI can cause damage to your inner sidewalls, and that can lead to a blow out. You wont see any damage on the outside but the inside of your tire could be all chewed up.
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