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View Full Version : Correct tire pressure for Ice/snow


rover67
11-20-2007, 05:52 PM
Quick question... we are headed up to summit county for the holidays tonight and being new here I am curious about tire pressures in the winter conditions. Now, i know it may not even snow at the rate it's been going, but this is a perfect time to ask the question.

I have 33 x 10.50 bfg at's that i run at 45psi every day. what should they be at for winter hwy driving? with chains?

feel free to flog me if this is a stupid question..

-Marco

treerootCO
11-20-2007, 06:32 PM
when the snow is deeper than the street signs, I go with 5psi. :hill:

I run the usual pressure with or without chains on the road. The only thing you need to know is how your car handles in the snow.

rover67
11-20-2007, 07:21 PM
sweet. thanks, maybe i'm worrying way too much.

wesintl
11-20-2007, 07:38 PM
45? I'd probably run about 30 on that tire in the snow on the highway without chains. JMHO

subzali
11-21-2007, 06:39 AM
I usually run 35 in dry conditions, don't usually bother with dropping it for the wet/snowy, but x2 30-35 for around town, less on the trails.

Red_Chili
11-21-2007, 07:43 AM
Pressure really depends on the tire and the truck. If you run 45 and get good even wear, that is not a bad pressure to run year round. You could run 30 if you notice a lot of sliding, etc. With chains, you generally don't want to air down.

I usually run 25psi in 35/12.50x15s, and run 6psi in deep snow. See what I mean?

Uncle Ben
11-21-2007, 08:15 AM
Pressure really depends on the tire and the truck. If you run 45 and get good even wear, that is not a bad pressure to run year round. You could run 30 if you notice a lot of sliding, etc. With chains, you generally don't want to air down.

I usually run 25psi in 35/12.50x15s, and run 6psi in deep snow. See what I mean?



I run 35 daily and 40 when loaded (the truck) on the highway. For higher street traction on my 80 I'll run 25 to 30 ish. When I air down on the trail (to Starbucks) I'll start at 15 and in snow I'll go down to 12 if conditions warrant it.

rover67
11-25-2007, 05:03 PM
yeah, i am going to lower them a bit for street driving. the outer edges havent even worn the nipples off and it's been like 7000 miles. gonna try 35 instead of 45.

on another note, we drove quite a bit in the snow (only 3-10") up some 4wd roads. the bfg at's did pretty well. I was surprised. I was curious about what to do with the chains, thanks for the advice.

will probably be driving to jackson hole next weekend. hopefully i don't see too much snow on the hwy. if i do we'll see how it does.

Kiwi 70
11-25-2007, 08:35 PM
As this is my first post I will try and sound intelligent;

The guide I like to follow is as follows;
Tubeless I try not to run any lower than 15psi
With Tubes then no lower than say 8psi
With beadlocks then about 3-5psi is fine

Otherwise you risk the tyre coming of the bead

Saying all that down here in New Zealand we don't do a great deal of snow driving with some exceptions

PatrolMan
11-26-2007, 12:13 AM
Personally I don't run lower than 20 on the road for any reason. I typically don't air down when wheeling unless I am in sand. When I go ice racing in Georgetown I air them down to 15 and fill back up when I hit the highways. I think most people run 15 or less on the ice with no beadlocks. Of course there isn't a lot of sidewall issues since there is no real for/aft traction or side/side traction to pop a bead! On-road conditions can obviously vary quickly and at speed on pavement I want a good pressure.