16 ply vs 14 ply on steers

Discussion in 'Ask An Owner Operator' started by 4wayflashers, Apr 1, 2023.

  1. kemosabi49

    kemosabi49 Trucker Forum STAFF Staff Member

    Jan 13, 2013
    SW Arkansas
    I can't tell you the pressure by thumping them. But I can tell if a tire has 20 or more psi less than the ones around it by thumping them. This time of year anyway. Real cold in winter, they all sound low. Then I will stick the gauge on them. We run different trailers every day, sometime 2 or 3 different trailers, and I'm not leaving the yard with a low tire. Don't like sitting on the side of the road waiting on the shop guys to get there.
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  3. bad-luck

    bad-luck Road Train Member

    Nov 16, 2013
    Baltimore, Maryland
    That's impressive for steers.
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  4. Jubal Early Times

    Jubal Early Times Road Train Member

    Oct 17, 2022
    The spring packs are different.
  5. God prefers Diesels

    God prefers Diesels Road Train Member

    Jun 26, 2020
    South Texas
    Had a guy at Beasley Tire in San Antonio tell me that. Funny thing is, he wouldn't give me 16-ply steers at 14-ply prices when I asked. I mean, they're the same tire, right??
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  6. special-k

    special-k Road Train Member

    Dec 27, 2008
    Southern Ontario Canada
    I've ran 16 ply Michelin XZE's for years. I found l didn't get as much irregular wear as 14 plus tires. My truck carries 11 and change on the front axle when loaded. Bitd Michigan gave you a little extra weight allowance for 11R24.5 16 ply steer tires be regardless of axle or spring rating. So it was cheap ins imo.
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  7. gekko1323

    gekko1323 Road Train Member

    Jul 14, 2018
    Henderson, NV
    I put a whole new set of 16-ply drives on the truck about 6 months ago. Even though they say to inflate to 120 psi cold, I keep them at 110 because I run the desert a lot. The same with the steers. I'm not sure if this way of thinking is valid. What do you guys say?

    But I've always wondered...in cold weather, we know that air contracts and the pressure is lower. So here in Vegas, the whole winter my tires were at 100-105 psi in the morning due to the cold. But I never put air in them because I was worried that when the temp warms throughout the day the pressure would rise naturally. So the extra air I put in would expand too. Is this logical? I'm glad this thread was born because right now I'm getting ready to go to the yard to air them up to 110 again. So I figured I might as well ask you guys to see what you guys do in the cold weather.
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  8. Jubal Early Times

    Jubal Early Times Road Train Member

    Oct 17, 2022
    The more air you put in the less sidewall flex you get. Less flex generates less heat. Heat is what makes the pressure rise.

    so it not linear. Say at 105 you may reach 115 pounds as the day progresses. Gaining a 10 pound increase in pressure. Where as if you inflated to 120 cold you may only see 128 hot. Gaining only 8 pounds.

    my numbers are purely hypothetical I don’t know what the actual increase is.

    Heat is the number one killer of tires, so the cooler they run the better.

    also the 120 air pressure on the tire is cold inflation. You could run 130 and they won’t increase to the point of exploding at higher air temperature
  9. Magoo1968

    Magoo1968 Road Train Member

    Mar 18, 2021
    St Malo mb
    120 psi is to carry max load rating your fine with 105 on drives..
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  10. KrumpledTed

    KrumpledTed Medium Load Member

    May 6, 2022
    I put some on mine back in January. Never heard a bad word about them so I figured I’d give them a shot. My only gripe thus far is that they tend to follow grooved pavement.
  11. Hammer166

    Hammer166 Crusty Information Officer

    Aug 18, 2007
    ~8600+' and loving it!
    That 120psi depends on the specific tire. Both the 275/70 and 295/60 sizes I've run on carhaulers required 130psi for maximum load.
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