New steer tires...

Discussion in 'Experienced Truckers' Advice' started by EZ Money, Apr 15, 2011.

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  1. Apr 15, 2011 #1
    EZ Money

    EZ Money Road Train Member

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    Had a set of new Michelin steering tires put on yesterday and did not notice they put 80 series tall rubber on until i got home.
    Not sure why but wondering if it will have any handling affects.
    It feels good on the highway but i was just bob-tailing home.
    My drives are 75 series.

    Should i call the shop and see if they screwed up or is it no big deal?
     
    EZ Money, Apr 15, 2011
    EZ Money, Apr 15, 2011
    #1
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  3. Apr 15, 2011 #2
    Hardlyevr

    Hardlyevr Road Train Member

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    If I remember right, Michelin has different numbers than just about everybody else on their tires. Makes it even more confusing when you go to get chains for the drives.
     
    Hardlyevr, Apr 15, 2011
    Hardlyevr, Apr 15, 2011
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  4. Apr 15, 2011 #3
    Katz

    Katz Medium Load Member

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    I bet your new steers are 275/80, whereas your drives are 295/75. Both are about the same in diameter, and considered as low profile tires. I don't think there'll be any problem.

    Many people think xx-series means a certain fixed sidewall height. It actually describes the sidewall height in terms of percentage to the section width (ie, overall width of a tire), as such its technical term is "aspect ratio". 80-series means a tire has sidewall height of 80 percent of its section width.

    80% of 275mm is 220mm (8.66"). 75% of 295mm is 221.25mm (8.71"). Since you have two sidewalls (above rim and below rim), the total difference in tire diameter is 2.5mm, which is less than 1/8".

    Now if you were to have 295/80R22.5, then this imaginary tire would be 1.26" taller than your 275/80R22.5, even though they are both 80-series tires.
     
    Katz, Apr 15, 2011
    Katz, Apr 15, 2011
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  5. Apr 15, 2011 #4
    EZ Money

    EZ Money Road Train Member

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    They do fill the fenders up nice and look good.Feel much better than the GoodYear rubber that was on it.
    I had new shocks put on the front too.
    When it comes time to get drives i'll get the matching size.
    Too bad the drives last so much longer than steering tires...
     
    EZ Money, Apr 15, 2011
    EZ Money, Apr 15, 2011
    #4
  7. Apr 15, 2011 #5
    EZ Money

    EZ Money Road Train Member

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    Great info....I will post the sizes tomorrow and see what i got.
    (Lease trucks so they ordered them)

    I'm surprised they let me have Michelin.They usually replace with Bridgestones but said this particular Michelin was a much stronger tire.
    We have to do some curb hopping on some of the places we deliver and the shop suggested the heavier sidewall tires.
     
    EZ Money, Apr 15, 2011
    EZ Money, Apr 15, 2011
    #5
  8. Apr 16, 2011 #6
    Logan76

    Logan76 Crusty In Training

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    Michelin are expensive but they're a sweet big truck tire.
     
    Logan76, Apr 16, 2011
    Logan76, Apr 16, 2011
    #6
  9. Apr 17, 2011 #7
    EZ Money

    EZ Money Road Train Member

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    Heading out on an 1900 mile run this morning....I'll see how she rides loaded.
    I measured the tire height and only about an inch and a half taller than the drives that are 50% worn down.
    Should be fine...
     
    EZ Money, Apr 17, 2011
    EZ Money, Apr 17, 2011
    #7
  10. Apr 17, 2011 #8
    Krooser

    Krooser Road Train Member

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    New tires always feel great... what model tire did they put on?

    Michelin does use a different tire size than most of the other brands...
     
    Krooser, Apr 17, 2011
    Krooser, Apr 17, 2011
    #8
  11. May 1, 2011 #9
    EZ Money

    EZ Money Road Train Member

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    I believe they are XZE 3 models.
    They said they are the top of the line Michelin with better side walls because we have to hop a curb once in a while getting in and out of where we deliver.
    So far i really like them.
    I was in heavy rain in those tornado storms in Georgia and they sure held the road in deep water.
     
    EZ Money, May 1, 2011
    EZ Money, May 1, 2011
    #9
  12. May 6, 2011 #10
    Krooser

    Krooser Road Train Member

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    should be XZA 3's... but I know what ya mean. I have them on my 379 and are about to replace them after around 140K...
     
    Krooser, May 6, 2011
    Krooser, May 6, 2011
    #10
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