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P without 20" wheels: does it also go 0 to 60 in 3.5 second?

Discussion in 'Model 3' started by Carl_Drogo, Jul 14, 2018.

  1. Carl_Drogo

    Carl_Drogo Member

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    The configurator clearly shows 0-60 in 3.5 seconds even before the Performance Package with 20" wheels is offered / selected. So what do the 20" wheels do in terms of performance?

    I'm thinking about ordering the P w/out the Performance package (the 20" wheels look too big to me), but just wondering what I'll be missing in terms of acceleration, torque, performance, etc.

    Thanks for any insights.
     
  2. jdmasters

    jdmasters Member

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    There isn't any information out there. Hopefully, we start seeing some real world numbers in the next couple weeks.
     
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  3. ℬête Noire

    ℬête Noire Active Member

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    #3 ℬête Noire, Jul 14, 2018
    Last edited: Jul 14, 2018
    Nothing you don't already know deep down in your heart. Until you put new rubber on the 18" rims they are unlikely to handle the full power available when you stomp on the pedal, so T/C is going to kick in. Fortunately I believe Michelin Pilot Sport 4S, for example as that's what the 20" use, are also available aftermarket in an appropriate size for the 18" (think $900 price for a set), so there's a chance you'll be able to have similar/same performance if you're willing to drop some money. We'll have to see on that.

    Also you can't use the 18" rims with the upgraded calipers, doesn't fit.
     
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  4. Zoomit

    Zoomit Member

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    Larger wheels often have slower acceleration due to being heavier and, more importantly, having a larger polar moment of inertia. (mass further from the axis of rotation)

    It’ll come down to whether the PS4S tire grip outweighs the 20” wheel inertia as compared to the lower MOI 18” wheels with LRR tires.
     
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  5. juanmedina

    juanmedina Member

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    Most of the benefits from upgraded package is from the tires.
     
  6. JoshPA

    JoshPA Member

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    With the right TIRES, the smaller wheels will end up giving better 0-60 times.
     
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  7. insaneoctane

    insaneoctane Active Member

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    The AWD and P versions have approximately double the traction of the RWD. Ultimately it is about the rubber more than anything
     
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  8. Knightshade

    Knightshade Active Member

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    The package with the 20s gets you-

    Bigger, likely heavier, rims, in the same width as the 18s. That's generally not great for performance.

    Vastly better tires- which is good for performance, but you can put those on the 18s for under 1k.

    Bigger brakes- which is useful on a non-drag race track, but won't make any difference in normal street driving unless you're involved in the chase scene from a Bourne movie.

    Rear spoiler and aluminum pedals- which aren't likely to be especially useful at anything other than if you like the look

    A 10mph higher top speed (155 vs 145)- which again may be useful on a race track or escaping armed pursuit, but otherwise not so much.

    In theory a 0.39 inch lower suspension (though it's not ENTIRELY clear if the regular P gets this- it could be just an adjustment to make the 20s work better, we're not sure)


    That's about it.


    If you plan to track the car the 5k pack isn't a bad deal compared to doing brakes and tires aftermarket on your own plus the top speed bump... if you don't plan to track it it seems way overpriced for the use you'd get from it compared to just putting the same tire on the 18s.
     
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  9. ulrichw

    ulrichw Member

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    Agree with your post, and would go even further:
    The size of the brakes isn't necessarily even an issue - A good set of dedicated track brake pads or even a dual purpose street/track set of pads would almost certainly do the trick. Pair that with a high boiling temperature brake fluid, and you'll have a package that should resist fade just fine on the track.

    Worst case you may have to jury-rig some brake ducts to increase airflow to the wheel wells - but in general, big brakes and wheels are more about show than performance.

    I'd say that the 5K pack is good for that narrow range of people who are serious enough to want to drive on the track, but not serious enough to want to optimize the handling/braking of the car.

    If you're serious, you'd probably opt for the 18" wheels for the lower unsprung weight and generally larger and more cost-effective selection of wheels and tires. With the right upgrades, I doubt the size of the brakes will be a factor.
     
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  10. TEG

    TEG TMC Moderator

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    When you folks talk about heavier wheels... What about the tires? Aren't the higher profile tires heavier? More rubber and steel belts in the tires.
    Need to weight the whole package (wheels + tires) not just the wheels.
     
  11. Knightshade

    Knightshade Active Member

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    Nope.

    For example the Michelin 235/35-20s for Tesla weigh 23 lbs.

    Same tire in 235/45-18 (OEM aero size) weigh... 23 lbs.

    (weights from tirerack.com specs page on the Pilot Sport 4S)
     
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  12. insaneoctane

    insaneoctane Active Member

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    Aluminum is heavier than tire /rubber
     
  13. timk225

    timk225 Active Member

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    Buying 20 inch wheels makes more profit for Tesla. Tesla's balance sheet performs better. That's about it. Unless you live to see how well you can go around corners fast and decided you needed a $70,000 car to do that in.
     
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