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post #1 of 28 Old 01-18-2016, 08:55 PM Thread Starter
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tirre pressure

not only an ariens query, but what do you guys run for tire pressure ? i prefer chains, but have read posts where good tires do the job. my xtrac tires at 12 psi work just ok, but could they work better at 8 psi etc ? just curious ?

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post #2 of 28 Old 01-18-2016, 08:57 PM
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Originally Posted by nwcove View Post
not only an ariens query, but what do you guys run for tire pressure ? i prefer chains, but have read posts where good tires do the job. my xtrac tires at 12 psi work just ok, but could they work better at 8 psi etc ? just curious ?
My Carlisle Xtrac tires say to run at 14-17 lbs, both in the manual, and on the tire sidewalls. Do yours have any pressure rating on the sidewalls?

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post #3 of 28 Old 01-18-2016, 09:01 PM
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That... is an interesting subject!

The manual for my ST1032 (buried in the "dealer prep" section) says to inflate the tires to 20 PSI. I think in other literature for that machine (the service manual?) I've seen a recommendation of 14-20 without chains and 20 if you're using chains.

But... the tires (sno-hog type) that came with the machine, the xtracs I put on there, and the sno-hog type ones on my ST824 all say "max. 14 PSI" on the side!

So I inflate them to 14... but would love to know why the manuals call for more.

~1994 Ariens 924084 (ST1032) "papa bear": restored, re-engined, real nice!
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post #4 of 28 Old 01-18-2016, 09:09 PM Thread Starter
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Quote:
Originally Posted by skutflut View Post
My Carlisle Xtrac tires say to run at 14-17 lbs, both in the manual, and on the tire sidewalls. Do yours have any pressure rating on the sidewalls?
good question.......tires say max 20 psi. at 12 psi they are still kinda stiff.

24 " 1967? Ariens Sno thro
28 " Ariens Sno Tek
Toro CCR ss
1966 Gravely LI Walk behind with dog eater

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post #5 of 28 Old 01-18-2016, 09:14 PM
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I also have the x-tracs and i run about 14 psi but i know for a fact that the softer you put your tires, the better traction they'll get. But by doing so, you are sacrifying on manoeuvrability of the machine.
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post #6 of 28 Old 01-18-2016, 09:20 PM
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Originally Posted by ELaw View Post
That... is an interesting subject!

The manual for my ST1032 (buried in the "dealer prep" section) says to inflate the tires to 20 PSI. I think in other literature for that machine (the service manual?) I've seen a recommendation of 14-20 without chains and 20 if you're using chains.

But... the tires (sno-hog type) that came with the machine, the xtracs I put on there, and the sno-hog type ones on my ST824 all say "max. 14 PSI" on the side!

So I inflate them to 14... but would love to know why the manuals call for more.
Didn't I read someplace that the high pressure 20LB setting was something to do with shipping and transport? I know mine was at about 20 when it arrived in the crate, with a note to check tire pressure according to the manual before using.

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post #7 of 28 Old 01-18-2016, 09:28 PM
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For what it's worth, I just looked through the service manual I have that covers a bunch of 924 series models from the 1990s, and in multiple places it says "20 PSI". There's a chart with specs for each model that lists tire pressure, all say 20 PSI.

Then in the maintenance section it says:
Quote:
4.11 TIRE PRESSURE
Maintain the unit tire pressure at a maximum of 20 PSI (138 kPa).
No mention of shipping or other special circumstances.

With all due respect to Ariens, I'll keep the pressure at or below the limit on the tire sidewall - I figure the tire maker is in the best position to decide what will and won't make the tire fail!

~1994 Ariens 924084 (ST1032) "papa bear": restored, re-engined, real nice!
1991 Ariens 924050 (ST824) "mama bear"
Toro PowerCurve 1800 "baby bear"

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post #8 of 28 Old 01-18-2016, 11:11 PM
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My tires say max of 20psi. I usually set them for 17psi at 30degrees. That way, when the machine is inside with a garage temp of maybe 45-50, the PSI won't go over the 20PSI rating. The 17psi lets the tires "squat" enough so that the entire tread contacts the ground.

As far as chains, a neighbor of mine just bought chains for his brand new Ariens Platinum 24 (which I ultimately convinced him to purchase), and I think he wasted his money. The treads are already so wide and deep that the chain sort of falls into the grooves and seems like it doesn't allow the tire to dig into the snow as well as they would without the chains.

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post #9 of 28 Old 01-19-2016, 04:00 AM
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My tires say max 20 and I run 17.

2015 24" Platinum SHO
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post #10 of 28 Old 01-19-2016, 12:36 PM
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The pressure shown on the side-wall of the snowblower tires is for maximum load. For a 4.8 x 8 (Ariens 4.8 x 16) 2 ply tire the max load is about 435 lbs. So at 20 psi the two tires can support a maximum of 870 lbs. That pressure is not optimal for traction on a machine weighing 300 to 400 lbs but Ariens says to use the side-wall pressure.

Temperatures in the winter vary significantly and that affects the tire pressure and so does the nominal leakage of air through the tires apart from any leaks. So for optimal use the pressure needs to be checked occasionally, just like your car tires.

My dealer recommends 14 psi and I have been using that pressure for a long time. It seems to be a good compromise to me. Honda recommends 8.5 psi for their machines with tires. That low a pressure may give more traction but if not checked regularly then the pressure could fall so low that it will not maintain a seal with the rim when subject to high side loads.

Lower pressure gives better traction while higher pressure gives more load carrying capacity. 14 psi is a compromise.

2015 Ariens Platinum 30 SHO - model 921040
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