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My wheel/tire experiences with noise/efficiency/etc

Discussion in 'Model S: Driving Dynamics' started by Zooomer, Aug 13, 2017.

  1. Zooomer

    Zooomer Member

    Apr 3, 2016
    grand rapids mi
    Some of this data is clear cut, some is anecdotal so I apologize in advance for not having it be more scientific.

    I got my P100d with all seasons on it and immediately changed to Yokohama V902B Winter Tires 245/45R19. The performance was amazing, best value ($420 shipped) I've ever got in a tire.
    I suspected range and noise would be bad but had nothing to compare to and they seemed the same as the all season OE tires.

    Come summer I switched to OZ 21's, light weight with Pilot Sport TO tires (foam in em). 245 up front, 265 in rear. My watt use went from around 320 to 360. Noise was terrible. I'd NEVER recommend these tires based on cost and noise.

    To do a road trip to Florida I bought a set of TSW 20's and ran a Pirelli P7 245/45/20. These gave fantastic range, 290-300 (tire size factored in). They rubbed so later I swapped the front to a 235. Efficiency wen up even higher enabling 240 on AP2 behind trucks.

    Returning I swapped back to the 21's and put Pirelli P zero Nero's up front in 255/30/21. Energy seems to have gone up by 10 over the Pilot sports to 370. Noise is slightly reduced.

    After some driving I switched the rear to Pirelli P7 in 275/35/21 as this is an eco tire. Noise went down, energy use is high but currently inconclusive as I changed brakes at the same time and it varies a lot more than it used to. I believe I'm having some issues with too much variation in front to rear tire diameter pissing off the electronics.

    Points to note:
    Handling is good but not amazing no matter what tires I ran. The difference from a 245 winter tire to a staggered Pilot Sport is not what you'd expect. Body roll is still holding the car back and no tire is going to change that. If you believe you're going to get this amazing upgrade doing 21's, you won't. They just look cool.

    The new brakes are amazing. 20's and 21's fit over em, haven't tried 19s yet.

    Tire width SEEMS to play a large roll in energy use. I'm still doing more testing.
    The car SEEMS to do better with larger diameter (overall) tires. I'd guess this due to electric motor power/efficiency curve.
    The is a decent amount of room in back for more tire, but not up front. 245/45/20 rubs, as does 235/45/20.

    Attached Files:

    • Informative x 2
  2. Az_Rael

    Az_Rael Supporting Member

    Jan 26, 2016
    Palmdale, CA
    It would be nice if they re-released the plus suspension that the first P85Ds rolled out with. It had stiffer sway bars as I recall.
    • Like x 1
  3. The Duke

    The Duke Member

    Nov 17, 2016
    Thanks for the post!
    Body roll? I have the solid roof, perhaps a difference, but body roll seems pretty low to me. Certainly not the limiting factor for corners. Usually my limiting factor for corners is not having "sport mode" where I can dial up a little more drift or understeer as needed for a given road.
    Agreed even forged 21's and 2 piece rotors will not change much, but I do notice better ride quality.
    I am looking to change the sport tires for something more long lived and quieter so I am avidly reading this type of info. I agree the sport Michelins are NOISY.
  4. buttershrimp

    buttershrimp Click my signature to Go Mad Max Mode

    Jun 17, 2017
    I've been super impressed with my michelin super sport 2's with foam. I have no reference to compare however as I have only had these, but they are quiet on most roads, and really seem to grip well. it's interesting how certain pavements conduct noise over others on certain tires. By the way, from the looks of this thread... you guys seems to know your stuff when it comes to tires.... those pirellis look really great... what are your impressions?

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