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Model 3 Tire Pressure

Discussion in 'Model 3: Driving Dynamics' started by m4eyyz, Jun 10, 2018.

  1. m4eyyz

    m4eyyz Member

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    I picked up my Model 3 last week.
    Handles great - but noticed that the tire pressure monitors are showing 45/46 in the front and 47 in the rear (and were at 49 today in the heat after highway driving).

    I'm going to release some air tomorrow - but am wondering what sort of handling difference I can expect.

    (and has anyone else had their 3 delivered with such high tire pressure?)
     
  2. roblab

    roblab Active Member

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    I've been driving 6 years with tire pressure at 46 lb and more. What's the big worry? You think it will make your car drive softer? The 3 is supposed to be a sports car, isn't it? As I live on a hill with curves, handling is a consideration, though the S can keep up with most of 'em.

    After driving that long, and longer, in EVs, I have figured out that the most important commodity to me is range. And softer tires get worse range. EV tires are traditionally hard to get better range, and dropping the air pressure will probably make the tread wear funny, maybe even voiding the warranty. Heck, buy now, I've begun to think that all cars have 45+ lb tire pressure.
     
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  3. DR61

    DR61 Member

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    #3 DR61, Jun 10, 2018
    Last edited: Jun 10, 2018
    Look on the car's driver door placard (should be 42 on recent builds). Set your pressures to those values when cool (early morning) with a good tire gauge. Ignore increases when tires get hot during driving. Occasionally (at least once a month) check the display when tires are cold and adjust as necessary.

    Of course you can experiment with other cold pressures up to the max on the tire sidewall. You may also drop cold pressure slightly below the placard value, but you should not go below the values that generate a warning from the TPMS (39 psi from what I have read). Lower pressures causes higher risk of tire failure due to heat buildup, and reduced range.
     
    • Informative x 1
  4. TexasEV

    TexasEV Well-Known Member

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    No the 3 is not supposed to be a sports car.
     
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  5. roblab

    roblab Active Member

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    Dang, and I've been driving it like it is all this time.
     
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  6. TT97

    TT97 Active Member

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    I would definitely consider the 3 as a Sport Sedan or Sport Saloon if you're snooty (or British).

    As far as tire pressure, you need to check in the morning when the tires are cool. Tires set at 42 psi can easily be north of 45/46/47 when heated up (especially if driven like a sport saloon).
     
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  7. Marsnaut

    Marsnaut Member

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    I picked up my car last week and it was set to 40psi. This falls in line with Elon's tweet: "Best way to improve ride is drop tire pressure to ~39 psi. 45 psi is best range, but lower comfort."
     
    • Informative x 1
  8. octoad

    octoad Member

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    I find my ride plenty comfortable at 48psi. The road talks to me, but it’s not harsh.
     
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  9. chinnam3

    chinnam3 Member

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    With 45/44 PSI, car sounds like empty drum on rough concrete roads. It gives same feeling when I increased the pressure on my wife prius to 45 PSI. Ride is very rough.

    I changed front to 40 and rear to 41 as it is rear wheel drive, rear pressure needs to be little more. Also, it is close to 42 psi recommended. It made considerable difference in noise on rough patches, and comfort also. I have not observed any change in range/consumption. My guess would be there would be less than 1% difference.
     
  10. Electroman

    Electroman Active Member

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    The car is an efficient beast. Don’t worry about range. It is easy to beat the EPA even at 38 psi as long as the temps are 70F+. AC doesn’t have any noticeable impact
     
  11. Baymax3

    Baymax3 Member

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    Anyone know if Tesla uses air or nitrogen in the tires?
     
  12. drawfour

    drawfour Member

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    Nitrogen usually has a green cap, and I haven't seen any pictures with green caps.
     
  13. gilscales

    gilscales Member

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    I have been running mine at 42 psi cold, on my other cars I adjusted pressure to get even tread wear, usually takes 10 to 15k miles to figure this out but almost always is slightly less than on the door, usually 2 or 3 psi less, would be interesting if someone had enough miles on a 3 yet to figure out ideal pressure for even tread wear.
     
  14. sumiguchi

    sumiguchi New Member

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    Edmonton, Alberta
    When I picked up my car the wheels where at 45 front &46 back, but after the first 300 miles they dropped to 42 all round. Not sure why! Could it be that the elevation of my place is lower than the service center?(1300 ft)

    Anyways you may want to put a few hundred miles on it before you adjust - then you’ll have a better feel for the effect of the pressure adjustment
     
  15. Electroman

    Electroman Active Member

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    I am running at 39 on all four now. The ride seems smooth and no hit on efficiency. I still get 225 wh/mile the same when it was at 45 psi.
     

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