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Tire wear question

Discussion in 'Model S: Interior & Exterior' started by tnt1971, May 31, 2018.

  1. tnt1971

    tnt1971 Member

    Joined:
    Feb 5, 2016
    Messages:
    199
    Location:
    United States
    I have 41,000 on my Model S on the original 19 inch tires. I got the car in March, 2016. I measure the treads pretty regularly and I should get 50,000 out of these, easily. I have rotated the tires about 4 times, and I don't do it religiously based on mileage.

    When I measure the treads, I measure the outer, middle and inner of each tire. On all 4 tires, the outer and inners measure between 4 and 5/32s and they are all pretty even. All of the middle treads on all the tires are at 3/32s.

    I can't imagine this is an alignment issue because that would result in the outer or inner wearing faster, not the middle. The only thing I can think of to cause this is overinflation, and I consistently run with 45psi cold (although it does creep up while driving to 48 to 50, depending on temperature).

    Curious if anyone else has had this experience.
     
  2. MacGreiner

    Joined:
    Oct 12, 2016
    Messages:
    495
    Location:
    MD
    Sounds about right. Over inflation wears the middle quicker and under inflation the outsides.
     
    • Like x 1
  3. jaguar36

    jaguar36 Active Member

    Joined:
    Apr 10, 2014
    Messages:
    1,808
    Location:
    NJ
    45psi is likely a little above optimal, but its recommended to slightly increase range. Regardless though 50k miles on a set is amazing, mine are shot after ~35k. 1/32 difference between middle an outer is hardly enough to worry about.
     

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