Changing out 4 tires at a time

Discussion in 'Trucks [ Eighteen Wheelers ]' started by heavyhaulerss, Sep 17, 2014.

  1. heavyhaulerss

    heavyhaulerss Road Train Member

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    I am considering going back to the original size tires that came on my truck. l.p.22.5 it now has 11r.225 I want to put the rear 4 on first then the front 4 in a month. would that work ? or would it affect the drive line?
     
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  3. rollin coal

    rollin coal Road Train Member

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    You don't want to do that. It would be similar to having 3:55 gear set in the front axle and 3:70 gear set in the rear one having 22.5 lopro on one axle and 11R22.5 on another. Not going to work. You could have whatever size you wanted on steers it wouldn't have to match but those drive tires need to be the same.
     
  4. GrapeApe

    GrapeApe Road Train Member

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    How worn out are the 11R's? I ask because new, a standard low pro is about 1.5" smaller in diameter. But if your 11R's are about worn out, that difference would be less.

    I'm looking at the Michelin data book and the loaded radius of an 11R is 19.5" and 18.8" on a low pro. But considering an 11R down to 6/32", the loaded radius would be about just a bit over 19" and that's doable.

    All brands measure a little different, so if you can get the data sheet for the tires you have and the ones you will buy, you can do a closer comparison. As a rule of thumb, I like to keep the difference front to rear no more than 3/4" diameter, which would be 0.375" on the radius (3/8").
     
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  5. blanco

    blanco Road Train Member

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    Burned diffs... Don't do it. Save up and get all done at once.

    Listen to Roling Coal. next post:

    My diff is burned. Whats cheapest parts.
     
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  6. Smellfunny

    Smellfunny Road Train Member

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    Agree with everyone else. I have a Volvo in shop now. Guy put set of new 11R24.5 on front drive and left 24.5LP on the rears and he made it two weeks. I think the only reason he made it that far is because he had replaced both rears about a year or so back. He is in the process of replacing the front rear now and hoping the rear rear is going to be OK.
     
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  7. jbatmick

    jbatmick Road Train Member

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    That is a definite no-no. All 8 must be the same.
     
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  8. heavyhaulerss

    heavyhaulerss Road Train Member

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    thanks for all the replies. in all the years of trucking when all drives were the same size, I would always put the rear on first, then the front rear after about 30,000 miles. on my truck the rear always wear down faster than the front. this way they would be about the same tread depth at removal time, plus cost's are absorbed easier too.
     
  9. Pablo-UA

    Pablo-UA Road Train Member

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    I used to change tires one by one, but of the same size (315/70r22.5). But now all my drives are worn, so I will change before snow
     
  10. Pedigreed Bulldog

    Pedigreed Bulldog Road Train Member

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    I learned the hard way not to do that with Mack rears. Had worn down my drives to the point of sending 'em off to be capped, and figured I'd get 4 used tires to use as place holders so I could keep running as I had 4 tires capped at a time. All of my tires were the same size, just had 6 to 8/32 on the used tires across the rear axle and 2 to 4/32 on the front. Empty was OK, but as soon as I had a load on the power divider started popping and snapping. Pulled into the closest tire shop and ended up putting 1 old tire & 1 used tire at each corner. When I got the first caps back, I swapped them in for the old tires...and when I got the second caps back, they swapped in for the used tires.

    The damage had been done, though. Within a year, I got to replace expensive driveline components.

    I always make sure all 4 corners are set up about the same now...even if one tire is mated up with a slightly more worn tire that will be scrubbed up pretty good in the next couple of weeks 'til I'm ready to pull it off. Sure beats replacing power dividers, differentials, etc...
     
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  11. Superhauler

    Superhauler TEACHER OF MEN

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    sure go ahead, but have a few extra thousand $$$ on hand when you burn up a powerdivider.
     
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