How low can I go with PSI and BFG AT K/O's? - Ranger-Forums - The Ultimate Ford Ranger Resource


Wheels & Tires Semi-Tech General discussion of wheels and tires for the Ford Ranger.
Sponsored by:
Sponsored by:

Reply
 
LinkBack Thread Tools Search this Thread
  #1  
Old 12-10-2009
FMD's Avatar
FMD FMD is offline
Member
Thread Starter
iTrader: (1)
 
Join Date: Aug 2005
Location: Amherst NY
Posts: 3,811
How low can I go with PSI and BFG AT K/O's?

How low can the tires go before I run into a possibly dangerous stiuation? I have 33x11.5 on a 15x8 wheel. Im always afraid of dropping my tires below 18PSI... can I go lower than that? and if so, how much?
Reply With Quote
  #2  
Old 12-10-2009
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
til the bead comes off....


I regularly go down to 10 and below when I go play.
Reply With Quote
  #3  
Old 12-10-2009
Hanks Rangers's Avatar
Member
 
Join Date: Sep 2008
Location: Sandpoint, ID
Posts: 821
just have to worry about the low psi when turning because it will push the tire off the bead. I run 15 -12 in sand and 10-below for snow.
Reply With Quote
  #4  
Old 12-11-2009
ranger's Avatar
Member
 
Join Date: Jun 2006
Location: Imperial Beach, CA
Posts: 4,502
Quote:
Originally Posted by Fx4wannabe01 View Post
til the bead comes off....


I regularly go down to 10 and below when I go play.
Ditto, im usualy at 8-9 when offroad
Reply With Quote
  #5  
Old 12-11-2009
brianjwilson's Avatar
Member
 
Join Date: Nov 2006
Location: Hillsboro, Oregon
Posts: 3,650
10psi easy. Lower if you want, but 10psi is pretty safe.

I use to drive home at 60mph+ over 50 miles with 18psi all the time.
Reply With Quote
  #6  
Old 12-11-2009
Tys 4x4 FTW's Avatar
RF Veteran
iTrader: (8)
 
Join Date: Jul 2008
Location: Las Vegas, Nevada
Posts: 6,575
i used to drop my 33x12.5x15 MTR's down to about 12 on some 15x10's. i would only go to about 15 when i had 15x8s.
Reply With Quote
  #7  
Old 12-11-2009
FMD's Avatar
FMD FMD is offline
Member
Thread Starter
iTrader: (1)
 
Join Date: Aug 2005
Location: Amherst NY
Posts: 3,811
getting a 'flat' is not an option, so about 10 PSI?
Reply With Quote
  #8  
Old 12-11-2009
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
number 1: what are you doing to require you to run it so low in the first place? on the street ontop of packed snow? I generally am down in the high teens for street snow use. Quite a bit lower when I'm out playing in the real deep stuff and trail riding with snow or even without snow.
Reply With Quote
  #9  
Old 12-11-2009
Level III Supporter
iTrader: (2)
 
Join Date: Jun 2004
Location: usa
Posts: 24,936
had my 12.5" wide tires on 10" wide wheels at 8 psi all summer at the dunes.. no issues
Reply With Quote
  #10  
Old 12-11-2009
DSFD506's Avatar
Member
iTrader: (2)
 
Join Date: Jul 2007
Location: Anderson, SC
Posts: 702
I ran some 33x10.5 Thornbirds between 8 - 12 psi when the center tread was slick til I could get some new tires.
Reply With Quote
  #11  
Old 12-11-2009
Ace's Avatar
Ace Ace is offline
Member
iTrader: (4)
 
Join Date: Aug 2007
Location: Central, Illinois
Posts: 3,448
ya what are you airing down for ?
Reply With Quote
  #12  
Old 12-11-2009
Hanks Rangers's Avatar
Member
 
Join Date: Sep 2008
Location: Sandpoint, ID
Posts: 821
for running over little children....... maybe not so much
Reply With Quote
  #13  
Old 12-11-2009
redranger04g's Avatar
Member

iTrader: (2)
 
Join Date: Apr 2007
Location: Placentia, CA
Posts: 928
ya i usually run 10-12 in the sand
Reply With Quote
  #14  
Old 12-11-2009
wellcom2knoxvile's Avatar
Member
iTrader: (2)
 
Join Date: Oct 2007
Location: Corvallis, OR/Seattle, WA
Posts: 1,390
ive run my bfgs down to 2-3 psi, took em on the freeway at 80 mph with that psi too... only bad thing that ive heard about the bfgs and airing down is that they have a weak sideway and that potentially could be bad.. but they have held up pretty well.
Reply With Quote
  #15  
Old 12-11-2009
Ace's Avatar
Ace Ace is offline
Member
iTrader: (4)
 
Join Date: Aug 2007
Location: Central, Illinois
Posts: 3,448
Quote:
Originally Posted by wellcom2knoxvile View Post
ive run my bfgs down to 2-3 psi, took em on the freeway at 80 mph with that psi too... only bad thing that ive heard about the bfgs and airing down is that they have a weak sideway and that potentially could be bad.. but they have held up pretty well.
wow are you serious? you went 80 MPH with 2-3 PSI??
Reply With Quote
  #16  
Old 12-12-2009
wellcom2knoxvile's Avatar
Member
iTrader: (2)
 
Join Date: Oct 2007
Location: Corvallis, OR/Seattle, WA
Posts: 1,390
yesssir!!! i went out to this mountain at 3 am to pull my buddys yota out cause he got stuck 3 days ago, the place was a total mess so i aired down... and by the time we finally got it out it was almost 7 o clock and the ticket office for the OSU football game was about to open!! so we had to mob back 35 miles!!
Reply With Quote
  #17  
Old 12-12-2009
Ace's Avatar
Ace Ace is offline
Member
iTrader: (4)
 
Join Date: Aug 2007
Location: Central, Illinois
Posts: 3,448
so who here is going to explain why going 80 MPH on 2-3 PSI is a bad idea?
Reply With Quote
  #18  
Old 12-12-2009
--weezl--'s Avatar
Member
iTrader: (1)
 
Join Date: Sep 2009
Location: Calgary AB, Canada
Posts: 3,139
lmao, i run what ever pressure the low pressure indicator turns off at, all the time, no matter what conditions... a lot of it is because i have nitrogen, so when i want to air back up, i don't want to put air in...
Reply With Quote
  #19  
Old 12-12-2009
wellcom2knoxvile's Avatar
Member
iTrader: (2)
 
Join Date: Oct 2007
Location: Corvallis, OR/Seattle, WA
Posts: 1,390
Quote:
Originally Posted by Ace View Post
so who here is going to explain why going 80 MPH on 2-3 PSI is a bad idea?
uhh... maybe you could... mr. mallcrawler with a lift!!!
Reply With Quote
  #20  
Old 12-12-2009
Fx4wannabe01's Avatar
RF Veteran
iTrader: (23)
 
Join Date: May 2005
Location: Boring, Oregon
Posts: 21,721
^^Mr. "my axle isn't centered to the truck"...

Mr. "I can't figure out why cops keep pulling me over for the same thing"...



That kind of psi at that kind of speed without locks....is just stupid. Don't matter who you are or where your goin'...just plain stupid. You were lucky the sidewalls didn't seperate from the tread...just stupid. Right there next to lincoln locked DD's.
Reply With Quote
  #21  
Old 12-12-2009
wellcom2knoxvile's Avatar
Member
iTrader: (2)
 
Join Date: Oct 2007
Location: Corvallis, OR/Seattle, WA
Posts: 1,390
umm.. i have beadlocks!!
Reply With Quote
  #22  
Old 12-12-2009
HarryTasker's Avatar
Member
 
Join Date: Jan 2005
Location: Portland, OR
Posts: 1,491
The PSI range is on the side wall of the tire.
Reply With Quote
  #23  
Old 12-12-2009
wellcom2knoxvile's Avatar
Member
iTrader: (2)
 
Join Date: Oct 2007
Location: Corvallis, OR/Seattle, WA
Posts: 1,390
yah. thats what im worried about.. time to ditch the bfgs!!!
Reply With Quote
  #24  
Old 12-12-2009
Ace's Avatar
Ace Ace is offline
Member
iTrader: (4)
 
Join Date: Aug 2007
Location: Central, Illinois
Posts: 3,448
Quote:
Originally Posted by wellcom2knoxvile View Post
uhh... maybe you could... mr. mallcrawler with a lift!!!
Nope sure can't that's why i was having some else do it.
Reply With Quote
  #25  
Old 12-12-2009
brianjwilson's Avatar
Member
 
Join Date: Nov 2006
Location: Hillsboro, Oregon
Posts: 3,650
Quote:
Originally Posted by --weezl-- View Post
lmao, i run what ever pressure the low pressure indicator turns off at, all the time, no matter what conditions... a lot of it is because i have nitrogen, so when i want to air back up, i don't want to put air in...
I run about 78% nitrogen. It is free and I can refill with it anywhere on Earth.
Just another reason I think paying for nitrogen is stupid, nobody wants to air down and lose their precious nitrogen that they paid for. lol
Reply With Quote
Reply

Related Topics
Thread Thread Starter Forum Replies Last Post
Low brake pedal and parking brake low. Sammyj General Ford Ranger Discussion 1 05-07-2015 11:17 PM
whats the lowest psi i can go? on a p235 75r 15x8? Ranger_EDGE Wheels & Tires Semi-Tech 6 06-19-2011 08:15 PM
how much psi can stock manifold take? tenacious006 2.9L & 3.0L V6 Tech 0 03-11-2011 04:11 AM
LOW LOW LOW RPMS JRacer 4.0L OHV & SOHC V6 Tech 23 05-07-2009 12:25 AM
BFG A/T's and BFG A/T KO malydeen Wheels & Tires Semi-Tech 13 02-05-2008 09:46 AM


Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Trackbacks are Off
Pingbacks are Off
Refbacks are Off



All times are GMT -6. The time now is 10:33 PM.


We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.