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Tires rubbing only when in reverse

Discussion in 'Model S: Driving Dynamics' started by jzafra88, Dec 31, 2019.

  1. jzafra88

    jzafra88 Member

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    2015 85D has been in and out the SC as they can't figure out the problem.

    Front tires rub only on reverse as I'm turning all the way to the left or right.

    After reading and thinking, could it be the caster? In the picture, on the left is a report from April 2019 (where no rubbing occurred), the right is a report from November 2019 where rubbing is happening

    The caster in April seems like a huge difference to now?
     

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  2. mongo

    mongo Well-Known Member

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    Caster should not do that and alignment was corrected anyway.

    Do you have staggered front and rear wheels (Arachnid)? If so, the fronts and rears may be swapped.
    Front right tire rubbing through fender into wiring? PICS*

    Other option is deformed wheel liner:
    Front Tire Wheel Well Rubbing in reverse - FIX

    Wrong tires on staggered rims:
    Tires rubbing
     
    • Like x 1
  3. jzafra88

    jzafra88 Member

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    I have stock 245/45/19 all around

    I was thinking the numbers on the previous alignment better suited my S if that's even possible?
     
  4. mongo

    mongo Well-Known Member

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    Half a degree should not move the tire enough to interfere. I'd check out the wheel liner. Another thing to try is have a person outside the car look at the wheel to wheel well gap while switching between drive and reverse and moving a little to see is something is shifting that should not.
     
  5. Ostrichsak

    Ostrichsak Active Member

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    Funny question but have you looked under the back end? This sounds like something that could be a rear diffuser hanging down that only makes sound when you're in reverse because it's hanging the other direction if that makes sense. I would start by laying down and looking underneath the back of the car and follow the diffuser all the way up and make sure that all four of them are still fully attached and none of them are hanging down.
     
  6. MP3Mike

    MP3Mike Well-Known Member

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    That is the tires, are all four wheels the same width? (It isn't likely that the smaller tires would be put on the larger wheels but I have seen it happen before.)
     
  7. mongo

    mongo Well-Known Member

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  8. jzafra88

    jzafra88 Member

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    the gap is sooooo close but their is clearance. Tried the heat gun trick but no luck.
     
  9. jzafra88

    jzafra88 Member

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    yes wheels are all 8.5” and 40mm offset
     
  10. jzafra88

    jzafra88 Member

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    took a look and all looks ok, this is becoming a head scratcher
     
  11. mongo

    mongo Well-Known Member

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    That doesn't seem right.
    Per the S owners manual:
    The 19 inch wheels are 8 wide and take 245/45
    The 21 inch wheels are 8.5 wide and take 245/35
    SmartSelect_20191231-203408_Adobe Acrobat.jpg SmartSelect_20191231-203356_Adobe Acrobat.jpg
     
  12. webbbcam

    webbbcam not-so-junior member

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    I have exactly the same problem.
    The original wheels 19" and Michelin Primacy tires fit and worked perfectly.
    I purchased from Tire Rack 19" Rial Lugano wheels and Michelin Ice X snows. Unbeknownst to me these were 8.5 in compared to the original 8.0.
    Only the snows make the noise when backing up and the wheel turned fully. I've checked multiple times but no damage to either the tire or the fender liner has occurred over the 4 winters I've used them.
    Oh well, next time I'll specify 8.0 inch rims.

    John
     
  13. Alysashley79

    Alysashley79 Active Member

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    I have this problem to with my winter tyres. (Not studded) service tech said not to worry as at low speeds won’t harm car.
     
  14. jzafra88

    jzafra88 Member

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    My mistake I may have overlooked that, mine would then be 8” wide.

    not too knowledgeable with wheels but width wouldn’t matter on a wheel that’s 8.5” wide on 19s since 21s are 8.5” wide?
     
  15. mongo

    mongo Well-Known Member

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    Yeah, seems like that shouldn't be an issue.
     
  16. jzafra88

    jzafra88 Member

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    I wonder why webbbcam has the issue as well?
     
  17. mongo

    mongo Well-Known Member

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    May have also gotten wider tires to match the wheels?
     
  18. webbbcam

    webbbcam not-so-junior member

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    Same size tire. My guess is that the shoulder profile of the winter tread is enough to just reach the fender liner.
    No marks, no damage, just noise.
     
    • Helpful x 1
  19. paulp

    paulp Active Member

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    I had a similar problem, although not quite the same (noise rather than scraping) but it might be worth checking. Essentially the factory put the steering wheel on crooked, and then aligned the life out of the front end to make the car go straight. On full lock this then caused significant noises - maybe those noises were scraping.....not sure. Fortunately my local tesla guy found it just before he was about to realign the subframe that holds the front end (has the subframe been checked?), he popped the steering wheel off and realigned everything the easy way. Problem fixed.
     
  20. jzafra88

    jzafra88 Member

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    exactly my symptoms with oem wheels and stock Michelin tires. It’s just frustrating the vehicle is making the noise when it shouldn’t
     

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