Reminder to truck owners in colder climates! - Page 3 - Ranger-Forums - The Ultimate Ford Ranger Resource


General Ford Ranger Discussion General discussion of the Ford Ranger that does not fit in any other sub-forum.

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  #51  
Old 12-16-2007
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my tires were low like 8psi but i chech em every other week ,ive got like a foot of snow already and im lovin it, the sleds runnin good :)
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  #52  
Old 12-17-2007
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I was about 10 psi low. good call!
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  #53  
Old 12-28-2007
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I think its about 1 psi for every 10 degrees the temp drops, and then also for every month the tires sit there.
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  #54  
Old 03-01-2008
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We are just lucky that it is miuus 20 and snowing most of the time. That makes us appreciate the warm weather when it comes even more! Bye the way most Canadians don't suscribe to this. This winter in Ottawa (nations capital) has been the worst (most snowfall) in many years. To have a 4wd Ranger is a blessing! I hve a remote cottage and have found that my 4 fwd Ranger isn't a snowmobile! Boating season is just around the corner.
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  #55  
Old 09-19-2008
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If youre tires are not leaking, do not add air. They will warm up as you drive down the road. Simply adding air because the cold pressure is low is a good way to get center wear.
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  #56  
Old 09-19-2008
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wouldn't an overinflated tire wearing only on the center increase mpg by having a smaller contact patch resulting in lower rolling resistance (and increased likelihood of locking the brakes/reduced traction in most conditions)? Of course the tire would wear more quickly and result in earlier tire replacement, but wouldn't the mpg be better? lol i'm not endorsing over-inflation...just arguing for the sake of argument :).
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  #57  
Old 09-19-2008
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Probably, but not by much. Any savings would be overrun by the cost of buying new tires all the time.
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  #58  
Old 09-19-2008
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I have a book thats used for vehicle design at the UofM. In it, I see where tire pressures (reg pass car sizes) greater than 32psi really have very little drop in friction. Below 32 and the friction / resistance grows very rapidly.

So.. if your stock on tire size keep the cold pressure at or 1-2psi above the factory specs. Going 3psi or more will only wear out the middle quicker and not give you any better mileage.

If you running 32s or bigger.. you'll just have to carefully measure tread wear to come up with a "best fit" pressure for your on road use. IMO a 32 x 11.5 tire (which I'm about to put start running) should run in the 26-28psi area for daily street use. But that's just my guess until I get them and start to learn based on careful measurements every 500 miles or so.

Rich
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  #59  
Old 09-19-2008
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the TPS reminded me, lol...I was 10 pounds under in my front, and 15 in the rear... suggested is 30psi... I'm running 32 all around

Last edited by GrafixGuy; 09-19-2008 at 10:00 AM.
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  #60  
Old 09-19-2008
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Quote:
Originally Posted by Alon View Post
lol... cold

i wore sandals, shorts and a t shirt today.

but i think i'll check my tires too
lol. x3
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  #61  
Old 09-23-2008
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don't mean to take over the thread, but i have a question about this while we are on the subject. my door jam says to inflate my tires to 35 and my tires say max tire pressure is 50 psi. what should i keep the pressure at? i have 31x11.50x15 super swamper trxus A/T's.
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  #62  
Old 09-23-2008
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Checked my tires last weekend. Still good, and it's been dipping down into the low 30's here.
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  #63  
Old 09-23-2008
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Quote:
Originally Posted by clintusaf View Post
don't mean to take over the thread, but i have a question about this while we are on the subject. my door jam says to inflate my tires to 35 and my tires say max tire pressure is 50 psi. what should i keep the pressure at? i have 31x11.50x15 super swamper trxus A/T's.
35 or 40. Don't do max PSI on the tire.
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  #64  
Old 09-23-2008
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Your best bet is to do the chalk test.

1. fill tires to what you normally run them at.
2. Take a piece of chalk and make a heavy mark across the tread.
3. drive truck forward and then check chalk mark.
4. keep adjusting the pressure until you rub off the chalk evenly.
5. you need to do this for the front and rear of the truck because of the weight difference.
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  #65  
Old 09-23-2008
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Quote:
Originally Posted by clintusaf View Post
don't mean to take over the thread, but i have a question about this while we are on the subject. my door jam says to inflate my tires to 35 and my tires say max tire pressure is 50 psi. what should i keep the pressure at? i have 31x11.50x15 super swamper trxus A/T's.
run 32-35
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  #66  
Old 09-23-2008
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Quote:
Originally Posted by casfz1 View Post
Your best bet is to do the chalk test.

1. fill tires to what you normally run them at.
2. Take a piece of chalk and make a heavy mark across the tread.
3. drive truck forward and then check chalk mark.
4. keep adjusting the pressure until you rub off the chalk evenly.
5. you need to do this for the front and rear of the truck because of the weight difference.
Sounds like a decent starting place for a guy who has non-stock sized tires.

I'd add to that by saying to take a infared temp gun and check sidewall temps after a 55-70mph drive. (my stock tires run 105-110F when overinflated by 2-3psi)

Rich
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  #67  
Old 09-24-2008
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Originally Posted by FireRanger View Post
Probably, but not by much. Any savings would be overrun by the cost of buying new tires all the time.
No to mention the safety issue. If it's so cold that there is a large pressure difference between hot and cold, it is very likely that there may be ice on the road. Less traction on a slippery surface.
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  #68  
Old 09-25-2008
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I check my tire pressures about once a month. I use to check them every fill up but it seems that on my car and truck the pressure never changes. I mean during winter they may drop 1 or 2 lbs but that's it. I never lose anything drastic like 10 lbs unless it is a nail. I can usually visually tell if one is about 5 lbs low too.

There has to be more to losing tire pressure than just temperatures. Is it because I drive so few miles? Less than 3k on the car and less than 8k on the truck?
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  #69  
Old 09-25-2008
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you cant check tire pressure when you just got done driving the car/truck, the tires have to be cold when you check the air.

only other way to loose air is leaky valve stem, hole in the tire or poor seal on the rim.
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  #70  
Old 09-25-2008
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Quote:
Originally Posted by zabeard View Post
you cant check tire pressure when you just got done driving the car/truck, the tires have to be cold when you check the air.

only other way to loose air is leaky valve stem, hole in the tire or poor seal on the rim.
I know that but I guess that could be misleading but the gas station is 1 mile or less from my house so they couldn't heat up that much.

First thing in the morning before driving the truck the psi will always be between 30-35, I try to keep all of them at 32-35.
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  #71  
Old 10-05-2008
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well in Florida it dropped to 77 today just checked tires and there fine still at 45 i keep my spare at 45 aswell so im guess the bigger the tire the less psi? because ive got a 14" rim and tiny tires and my tires say to keep them at 45 psi...
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  #72  
Old 10-05-2008
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mine were down to like 28 normally keep em at 40 could explain the 2mpg drop in gas miles ... doing a 300 mile trip this weekend so ill let you guys know if it goes up
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  #73  
Old 12-22-2008
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good looks man.
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  #74  
Old 12-22-2008
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it got to 0 here in michigan today i better check my tires
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  #75  
Old 12-22-2008
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+1 for 'Nitro FTW'! Keeps me at 40psi

(got it for free)
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