Jump to content

Air Down in Snow?


Recommended Posts

Posted
Does anyone air down in the snow or winter? If I am in 2wd in a snow covered parking lot or etc..., I spin like crazy! I just dropped 10psi out of my tires for the rest of Winter. Just wondering if anyone else drops their pressure? ???
Posted

I wouldnt.  The skinner the tire the better traction in the snow.  The only exception to this that I can think of is maybe if you are offroading in the snow.  In that case you are better off with more flotation so you wont sink in.

 

Just keep you tires inflated per spec and you are going to get the best traction possible out of the tire.

Posted
The place I got my tires said I could run them at 45psi all of the time. But so far I have ran 60psi until today when I dropped them to 50psi.
Posted
The place I got my tires said I could run them at 45psi all of the time. But so far I have ran 60psi until today when I dropped them to 50psi.

60 psi is probably too high for your truck (especially empty).  I run mine at 55 front and 50 rear (max infaltion is 80 psi), but that is on my 6000 lb HD crewcab with a fiberglass cap.

 

I installed a set of "LT" Bridgestones on my '00 Silverado 1500 and ran them at 45 psi empty.  I'm not positive, but I think the Max inflation for the stock 1500 aluminum rim is around 60 psi.  It should be stamped on the inside of the rim if I'm not mistaken.

Posted
I ran mine at 45 when I first got them and they got really hot, I then put them at 60 and they ran cool everytime I checked. They are Cooper Discoverer ATs, 8 ply.
Posted

I never changed pressure in snow.

Just be careful, a little weight in the bed is a great idea. I always carried inner tubes full of sand/salt mix. The tubes kept the water out and if I needed traction, I had the sand/salt to throw down.

Just cut big truck tubes and tie up the ends with safety wire.

Posted

Cooper Discovers are great tires!!!  Congrats on a fine choice.  :thumb:   I ran the "off-brand" Coursers or Mastercraft before, and found they were awsome tires!!! (made by Cooper)

 

Some heat in the tires is a good thing...  don't overinflate them and wear the centers out....   Those tires should be awesome in the snow, because mine were great!!!  :thumb:

Posted

lower air pressure will absolutely increase traction.

 

I run my rear 285/75 bfg at's at 40 with an empty bed and fiberglass canopy.  this is the pressure where I get full and even tread contact with pavement.

 

you can test for your optimum pressure using chalk or a very shallow puddle near dry smooth pavement.  first air up your tires.  then chalk up a portion, or drive through that shallow puddle onto dry pavement.  you will easily see that at 60 you do not get full tread width contact which of course means uneven tire wear.  gradually reduce the air pressure repeating this cycle until you see the full tread width 'blocking' on the pavement evenly.

 

you can also use a dusty gravel road where it meets pavement.

 

definitely let some air out.  you can go down to 45 without any worry.  any more than that you should use the above procedure to determine optimum pressure for your truck/tire combo.  just remember to air up when hauling/towing.

 

-jm

Posted

I had my truck's BFG AT tires at 60psi and was getting awful traction in snow, especially when I was driving in fields and on some old dirt/gravel roads that are not plowed.  I deflated the tires down to about 45psi and now it goes great on and off road.  

 

I'll air them back up when the snow quits flying! :jester:

Posted
Thanks guys! I do like the Cooper Discoverer ATs and have no problems at all when in 4x4 but have been thinking my 2wd traction seems a little weak. I have them at 50 right now, when I catch a warm day I will try the chalk thing.  :jester:  :cheers:

Archived

This topic is now archived and is closed to further replies.

  • Recently Browsing   0 members

    • No registered users viewing this page.
  • Forum Statistics

    250.4k
    Total Topics
    2.7m
    Total Posts
  • Member Statistics

    342,840
    Total Members
    8,960
    Most Online
    appletrav
    Newest Member
    appletrav
    Joined
  • Who's Online   1 Member, 0 Anonymous, 376 Guests (See full list)

  • Latest Articles

  • Posts

    • This is a 1/2 ton thing ONLY.  All HDs 2020-2026 have the two speed transfer case, with Autotrac as an option.     1/2 tons 2019-2026, regular 4x4s come with a single speed case (no 4LO!), and trucks with Z71 ordered, or all Trail Boss trucks come with the 2 speed case.  2 speed case is also an option on WT, and is also standard on High Country.  
    • 2013 5.3 still to this day calls for the PF48 filter.  Which as a 15psi bypass pressure.     There is a TSB, 17-NA-157 that talks about the PF-63 and PF-64 filters which have a higher bypass rating of 22psi.    TSB HERE - temp.xml   "Beginning in 2012, the oil pumps began to regulate main gallery feedback instead of pump out pressure. This means that the oil pump now does not begin to regulate until pressure is built up to the main gallery. This change reduces the amount of time it takes to provide oil to the engine bearing and lifters during extreme cold start conditions.  Main gallery feedback oil pump control systems are present on the following engine families which use Spin-on oil filters: Small Gas Engine (SGE), Large Gas Engine (LGE), High Feature (HFV6) Gen2 and Small Block Gen5 gasoline engines. These engines with the main gallery feedback oil pump control systems are factory built with an ACDelco® oil filters"   It also calls out what engines use those filters.  The gen 4 small blocks were not on that list (LMG, LC9, L9H, L92, L94, L20, L96).  Gen 5 small blocks use the higher pressure filter.          That all said...   Your 7045 Napa filter is the PF63 equivalent, with 22psi bypass.  You are already using the higher bypass pressure filter.  You CAN keep using it, you don't technically have to use it though.  
    • Do you know WHY the filter relief setting was increased to 22 psig?    When the new system goes into the second stage the pump volume ramps up considerably. It was found that the 15 psi filter bypass setting put the filter in bypass on a warm engine when the second stage was activated. Raising the filter bypass setting forced the filter to do what it designed to do. Filter. Preventing debris from circulating during high load, high rpm operation.    So next question is how did GM find this out? VLOM/lifter failures and a deep dive by Melling Corp.    Last question. Is it required? Look at it like this; a motor may be equipped with a rev limiter. But it only works if the set point in reached. That 22 psig setting only matters if the pressure differential across the filter media exceeds 15 psig during normal warm operation. Second stage kicks in around 3000-3500 rpm.    I can't answer your question because I don't know you and how you use the truck. But I think there is enough information here to let you decide for yourself. 😉
    • Probably not their first rodeo, so it should go as planned most likely.  Typically the service manager or tech doing the swap will put some seat time to shake it down after they get it all put back together.  We usually put 50-100mi before we hand them back so if something happens, its not after you get it.  A coolant leaks, oil leaks, a ground left off or loose, vibration, etc.     The new engines so far have been good?  There's been a couple that have popped out there again (the replacement engine) but most have been okay.  
  • GM-Trucks.com Clubs

  • Popular Contributors

×
×
  • Create New...