Not to be a spec nazi, but technically the power output at the tire edge will be different between all of the non-PUP wheel/tire options and the PUP tires on the rear motor. The speed calculation is the same because this is done on the front tire(s) and the circumference is the same across all of the stock tire options. However the PUP has 275/35R21 tires in the rear, which is about 2.1% larger in diameter. This is a larger lever force acting on the tarmac when accelerating combined with more unsprung/rotational weight on the rear motor, which inevitably results in marginally less acceleration performance.
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MY Performance seems neutered worth upcharge?
- Thread starter rreg
- Start date
Not to be a spec nazi, but technically the power output at the tire edge will be different between all of the non-PUP wheel/tire options and the PUP tires on the rear motor. The speed calculation is the same because this is done on the front tire(s) and the circumference is the same across all of the stock tire options. However the PUP has 275/35R21 tires in the rear, which is about 2.1% larger in diameter. This is a larger lever force acting on the tarmac when accelerating combined with more unsprung/rotational weight on the rear motor, which inevitably results in marginally less acceleration performance.
akballow
Member
I was debating between LR and Performance too, but I saw myself getting the induction wheels with the LR (+2k) or something third party ones (+3k) and the acceleration boost (+2K). This already put me about 50% into just getting the performance. So now the question is the extra speed (would be +2k if we can do two boost purchases), nicer-looking brakes (cost +1k), and spoiler with the compromise of a stiffer ride worth the 2-3k difference? I am on the fence.... but if they add track mode for the Performance. I will be VERY happy with my purchase. If they add track mode for boosted LR, I will be VERY salty.
Sunshine State
Automotive Enthusiast
Hence what I said above "virtually" the same. Good luck telling 2 percent by the seat of pants at different times with different charge levels. But if you want to get down to numbers the difference is actually less than 2 percent, it’s closer to 1.96 percent, 28.58 vs 28.03 inches. Those numbers can vary though if the tires are not oem brand because not all tire manufacturers 275’s and 255’s are exactly the same size. That said the difference in the drive motors torque output at different rpm’s doesn’t guarantee that a lower ratio will provide quicker acceleration at all speeds. An example is the new Taycan with a two speed transmission in the rear, it upshifts well below its motors maximum rpm to take advantage of its motors specific torque curve to provide quicker acceleration, there are more variables than just tire diameter when calculating performance.
52 16 57 39
BioDiesel & Electrons
I have absolutely no regerts about my PUP.
Now that said - I also knew of the $2k upgrade for the LR but it was my wifey who encouraged me to just get what you want for once - and stop cheating yourself and always adding more (like the acceleration boost).
AND - if Elon adds track mode and or other acceleration goodies, I’m thinking the MYPs will know first!
Now that said - I also knew of the $2k upgrade for the LR but it was my wifey who encouraged me to just get what you want for once - and stop cheating yourself and always adding more (like the acceleration boost).
AND - if Elon adds track mode and or other acceleration goodies, I’m thinking the MYPs will know first!
Since neither of us quoted sources or other math, I'm just going to post a screenshot of where 2.1% came from. See the attachment. I'm done with it.
With your moving of the goal posts by adding in motor design and limitations, especially for a car that's significantly different in it's motor design, implementation and control than the Model Y, I don't think it's relevant here. It's certainly informative to those who don't know, but the OP specifically asked about wheels, tires and acceleration performance.
However, i1Tesla's youtube video showed that lessening unsprung/rotational weight and/or reducing the overall tire diameter reduced the 0-60 times on the Model Y (as expected).
OP I would go with the LR+boost purchase along with a lightweight wheel replacement if you really wanted to get the best bang for your buck. I myself bought the PUP and am planning on swapping out the Ubers when my Martian 19" wheels show up at the end of December.
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akballow
Member
Blown away on run 1, late lunch on run 2 and caught up still. Seems well worth it to me personally.
LionelHutz
Member
That’s what the kids call getting walked...
It seems like top end may be closer between the two, but that low end performance is significantly different.
LR+Boost looks appreciably slower off the line, but is still able to hang in there to make the difference only 0.5 sec. For sure, Tesla let a bunch of Performance sales get away by not offering it with the 20 inch Inductions. Good news for them is that people ended up buying the LR+Boost, instead.
They really need to squeeze another 0.5 seconds off the 0-to-60 time for the Performance, to better differentiate it from the LR+Boost.
This is similar to comparing the BMW X3M vs the X3 M40i.
If they could get the performance down to 3.2, perhaps with a launch mode, it would be perfect. As it stands I feel like most people that test the MYP performance don't even get 3.5 second runs. It seems to be slower than advertised whereas the M3P people regularly get the advertised numbers.
Gman201
Member
Tried the boost. Really liked it! I kept it for 36 hrs and refunded it. Really missed it. Bought it permanently the next day. Loving it.
Gman201
Member
I do love the Uber turbine but can’t stand the harsh ride. I’m going to get the replica 19s or 20s from tsportline.
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