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19" wheels & all-season tires

Discussion in 'Model X: Driving Dynamics' started by qadaemon, Mar 17, 2017.

  1. qadaemon

    qadaemon Member

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    I'm getting close to needing new tires, so I'm thinking out loud. The 20" contisilents have been reasonable, but I was wondering if the 19" cyclones with some tire of equivalent circumference would have any benefits. Tesla sells them as a winter tire rim for the X, so I assume the size is close enough. Additional sidewall could give a more comfortable ride, but how would it affect towing capacity, range, and noise? The 22" loaners I've driven have been terrible at everything I care about but looks, would going the other direction just look worse but behave better?

    I'm going to ask the SC for an official answer, but everyone here tends to have more detailed information.
     
  2. Solarman004

    Solarman004 Member

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    Big advantage in my mind is that the 19" rims are symmetric. You can then install identical tires on all 4 rims and rotate for greater tread life.
    The 19s are supposed to get better efficiency, but at least one person on the forum reported no discernable improvement.
    I'm likely doing the same thing when my 20s wear out.
     
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  3. qadaemon

    qadaemon Member

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    Are the X 19's the same as the S 19's?
     
  4. Yinn

    Yinn Member

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    They're different.
    The S 19's are slipstreams, 19x8.0 (top)
    The X 19's are cyclones, 19x8.5 (bottom)

    [​IMG]
    [​IMG]
     
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  5. goneskiian

    goneskiian Active Member

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    There's no reason you couldn't use the S 19's though. Unless, for some odd reason, they've got a much lower load rating.
     
  6. GottaGetRidOfICE

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    I'm going to put my 20" performance tires back on my P90D X in the next few weeks, but am curious if anyone found a 19" summer/all-season alternative that works for the X. I much prefer the ride of the 19" on NJ's potholes. I'm disappointed to have to "waste" a set of rims eventually when the 20" tires wear out.
     
  7. bikeandsail

    bikeandsail Member

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    I own a set of Tesla 19 inch snow tires and wheels. When my summer tires on the 20 inch rims wear out I plan on buying an additional set of 19s for summer. I still don't know if I will go summer tires or all seasons. The selection in the 19 inch size with the 110 load rating is quite good for both summer and all season. An example below.

    It is bad enough not having a spare tire, have a staggered setup is ridiculous. I plan on an 1800 mile trip next month on the 20s and I will be throwing a 19 inch snow tire/wheel in the back, just in case.

    https://www.tirerack.com/tires/tires.jsp?tireMake=Michelin&tireModel=Latitude+Tour+HP&partnum=65VR9LTHPXLN0&vehicleSearch=true&fromCompare1=yes&autoMake=Tesla&autoYear=2016&autoModel=Model%20X%20P90D&autoModClar=255%2F45-20F%20275%2F45-20R
     
  8. MarkDFW

    MarkDFW Member

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    @bikeandsail and @qadaemon did either of you go through with purchasing 19" wheels and all-season tires for your X? If so what kind of tires did you go with? I'm also confused on why @Solarman004 is saying that on the 19" wheels you don't need to go with the 'staggered' setup vs. having to do so with the 20" wheels on the X. I don't doubt it - but why is this the case? Anyone know? PS what would stop you from simply not staggering the 20" wheels and putting the same exact 20" on the front as on the rear for that matter?

    Thanks - not an expert on tires/wheels/sizes/etc over here. Any help you all have is appreciated.
     
  9. bikeandsail

    bikeandsail Member

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    The 19 inch set up offered as snow tires/wheels from Tesla fits and has the required ratings. The 20 inch staggered setup: the rear tires won't fit on the front and the front tires do not have the load rating for the back.

    did buy a second set of wheels/tires but I will carry a spare mounted wheel (front) or snow on long trips and will mount the non rated front on the back if required due to a tire failure.

    The staggered setup for what is basically a family vehicle is ridiculously poor engineering.
     
  10. bikeandsail

    bikeandsail Member

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    Correction to above, I did NOT buy a set of 19 inch summer tires/wheels. But will carry a mounted spare on long trips.
     
  11. Solarman004

    Solarman004 Member

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    Mark, staggered setups are usually used to give improved handling. I'm guessing this is the case with the MX 20" wheels & tires. In the front, the gap between tire and suspension is tight. A 20" rear wheel/tire, if mounted in the front, will rub against the suspension. This has been verified by folks posting here when their wheels were mistakenly rotated front to rear.
    The 19" setup offered by Tesla has a diameter and width that allows one wheel/tire size to fit both front and back.
    Since my original post, I had a Ranger visit for the brake caliper recall, and talked to him about the 19" year-round option. His reply was conservative as expected: "the MX was engineered for the 20s and 22s to optimize handling and stability. The 19" setup is not recommended for year-round use."
    I still have about 4000 miles before I have to make a decision on sticking with staggered 20s, or changing to 19s. The good news is that all 4 of my tires are wearing evenly, so there would be no advantage to rotating the current set.
     
  12. MarkDFW

    MarkDFW Member

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    Thanks @Solarman004 and @bikeandsail for the thoughts. I’m really trying to figure out two things: what new tire should I buy once mine wear out in a couple months for daily use (20”) without spending a fortune. And for road trips is there a 19” option that is more efficient and yields more range. If there is a set of 19” winter wheels and tires that fit the car and support the weight rating .... but is too rough on the road (due to winter tread) so does not help efficiency ... I have got to imagine there is a set of tires that is all season that also supports the weight rating and might boost efficiency for road trips.

    I doubt anyone has gone down this path yet but wanted to poke around.

    As for replacement 20” that are not crazy expensive and last a while folks have suggested Yokohama Parada Spec-X. Thinking about giving those a try.
     

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