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Tire Pump

Discussion in 'Model S' started by Larry93428, Nov 4, 2014.

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  1. Larry93428

    Larry93428 Member

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    I got out my optional tire pump this evening, plugged it in and found it works very well.
    The pressure gauge is lighted, gee that's nice. Hah, the vanity mirror ......
    Anyway, a nice little pump.
    ~Larry
     
  2. CHG-ON

    CHG-ON Still in love after all these miles

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    Good to hear. I bought it as insurance, but have had my doubts on how effective it is. Did it fully inflate and seal a problem tire for you? Havins 21"ers, I am know that I will be faced with a flat on a dark mountain road in the pouring rain, possibly cursing the idea of no spare!
     
  3. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    Just be sure to use an accurate pressure gauge. The one on the pump (or any similar pump) is not to be trusted.
     
  4. Vitaman

    Vitaman Member

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    Recently bought a Viair 85P.

    It's not super fast but took my 40 lbs and raised it to the desired 48 without fail.

    Although I did not trust the built in gauge, it was fairly accurate to boot.
     
  5. MassModel3

    MassModel3 Member

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    Per my SC, the fix-a-flat should only be used as an absolute last resort. If you're in an area where you can call roadside assistance, that's by far the preferred solution. I was told that using that stuff pretty much guarantees that you will need to buy a new tire, and at up to $500 a pop, it's less than ideal.

    Of course, on a dark and desolate mountain road at night, it might be worth the expense.
     
  6. mknox

    mknox Well-Known Member

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    I bought a Slime-brand kit which claims to be tire and TPMS sensor safe, but I do agree with the "last resort" sentiment.
     
  7. randompersonx

    randompersonx Member

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    Another vote for last resort on the tire slime. If you do use it, make sure to warn the shop doing the change because it will make a big mess when they take the tire off the rim.
     
  8. TTT

    TTT Member

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    I was told by the SC that if you use the fix a flat can, it will ruin the tire pressure sensors. They also told me that Tesla has already arranged with select tow companies to carry spare tires for the MS
     
  9. mknox

    mknox Well-Known Member

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    That's a great idea. I remember suggesting it quite some time ago somewhere on these forums. It seems like such a waste to flatbed a car away for a flat tire. Just swap out with a spare, then the owner can come by Tesla Service or a designated tire shop later on, settle up, and get your fixed or replaced tire back.
     
  10. breser

    breser AutoPilot Nostradamus

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    The Tire Repair Kit that Tesla sells comes with flat repair stuff that they say is safe for the TPMS. It's my understanding that they have refills if you use it. Lastly the TPMS are down to just $50.
     
  11. Blu Zap

    Blu Zap Grinning member

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    I bought the Tire Repair Kit, stuck it in the trunk and haven't looked at it since. I am glad you guys checked it out and find that it works okay. I should pull it out in a nice, dry, warm, well lit garage and check it out before I need it on a dark rainy mountain road!
     
  12. CHG-ON

    CHG-ON Still in love after all these miles

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    Oh you bet. But talk about totally inconvenient to wait for a tow 40 mi from an approved tow company in the dark and rainy and scary and beautiful Santa Cruz Mountains (life is just so hard). I think Tesla should have run flats. At least for the 21"ers....If they exist and they should!
     
  13. Gizmotoy

    Gizmotoy Active Member

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    Does anyone still use run flats, though? All the major brands abandoned them because they're so expensive and perform so badly. Many (most?) new luxury vehicles come the same way the Model S does: sans spare on regular tires.

    I like the way they did it. I'm not saddled with a poorly-performing run flat, and have the additional storage that would have gone to a spare to use as I like. If I want a spare, I can throw one in the Frunk and be done with it (unless I have a D). If not, I can keep the compressor and goop for emergencies. And it saved me money and weight. Lots of advantages.
     
  14. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    Runflats are not the answer--especially for a Tesla where they will reduce range dramatically. And runflats won't help (and may hurt) damaged wheels from potholes. The real answers are: 1) Use 19" tires. or 2) Be sure to keep lots of air in your 21" tires. Use the vehicle placard pressure as the minimum that you never want to go below except in special circumstances (track day, for example).
     
  15. CHG-ON

    CHG-ON Still in love after all these miles

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    Thanks to both Gizmotoy and Jerry33. I really do not know that much about run flats, as I have never needed them with an SUV. So I am learning from your comments.

    But I am in a quandary on what the right pressure is for 21"ers. I watch it every week to ensure they are to spec. The car says 38/40. Feels low to me based on the aspect ratio and from what I have read here. I will say that after 3K mi (only) I have perfectly even wear across all tires, which surprised me. On very rough mountain roads, almost no highway driving. 8mm front and 7mm rear is left on the Michelins. Right, center and left. Perfectly even. I expected, at a minimum, uneven wear in the rears. I wonder if they have changed the camber.

    Thanks guys.
     
  16. RCOST

    RCOST Member

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    A good but somewhat expensive alternate for a tire pump is a small scuba tank with regulator, plus quick attach tire inflator for the hose. I ended up running across it since I scuba dive and ended up buying a tire inflator attachment on a whim.

    To my surprise, it works fantastic and far better than any of those cheap little electric pumps or even gas station pumps that don't work half the time or have a ton of moisture in the air which is horrible for the rims. Scuba air is super dry, plus if you keep the small tank in the car, it is very reliable with little to break and no worries about if that little cheap electric pump will work when you need it most. Best of all, it is super quick and can pump up a tire in a minute or two max.

    If anyone is curious, you can put it together for under $200, just get a 6 or 13 cu Ft tank, little argon or pony regulator, hose, and tire inflator attachment:
    http://www.piranhadivemfg.com/item/Catalina-13cu-ft-Aluminum-Cylinder-Brush-No-Coat-Color-3-LEFT-12601
    http://www.piranhadivemfg.com/item/Dry-Suit--Pony-Bottle-Valve--Nitrox-Ready-11739
    http://www.piranhadivemfg.com/item/Key-Ring-Tire-Inflator-RED-832
    http://www.piranhadivemfg.com/item/12-Double-Braided-BC-Hose-11858
     
  17. Victory

    Victory Member

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    Run flats are definitely not the way to go! It makes the tires 50% more expensive, the treads don't last as long (from my personal experience ~7k less miles), and they don't perform as well as non RFT's. I'm glad they don't come standard like it does with BMW's
     
  18. jerry33

    jerry33 S85 - VIN:P05130 - 3/2/13

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    If the toe in is correct, the camber won't really do much as camber is considered a non-wearing angle. However, like speed in an accident, it amplifies whatever else is going wrong.

    As to pressures, Every pressure recommendation is based on a set of assumptions. Change the assumptions and the pressure needs to change. The two big ones are: 65 F (18 C) ambient temperature and a pressure check before each driving day. I generally look at the vehicle placard pressures as the pressure you never want to go below.
     
  19. mspohr

    mspohr Active Member

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  20. green1

    green1 Active Member

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    Those patch kits are great, I carry one of those kits and a compressor. In the last 15 years I have never once changed a flat tire, but I have patched 5 or 6 on the side of the road. If you want, that would be plenty to get you to a tire shop to either do a permanent repair, or replace the tire. However I personally have never bothered, the patches have always lasted as long as the rest of the tire.
    There are limitations to what they can patch, but I suspect the slime kits are likely even more limited.
     

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