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Rumor: P85D firmware update to increase 0-60 performance to 2.8s
- Thread starter anxman
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qwertzy
Member
If the 2 ton Rs7 can get 0-60 in 3.2 seconds, the 2.5 ton P85D can also do that with around 500 hp. So with 691 hp it will able to accelerate as fast as an also 2 ton aventador's thrust mode in 2.7 seconds 0-60.
Gerasimental
Member
Hold on. I'm embarrassed to have to ask this (although as a non-owner maybe I shouldn't be) but are P85Ds currently not even getting the full 691hp? Or are they just not all made available for launch?
Don't worry, just read the thread about this topic.
Don't worry, just read the thread about this topic.
Show me a single video anywhere where the needle ever hits 480 KW. It's always to the right of the 480 KW tick and given that meter is logarithmic, it's more like 430 KW.
Secondly, you would only get 691 shaft hp with 515KW if you got 100% conversion efficiency. The inverter is about 93% efficient and then the AC Induction motor is about 90% efficient after the inverter takes it's cut.
So it's going to be considerably less than 643 hp.
So 430*0.93*.9*1.341 = 482 hp.
qwertzy
Member
It varies from multiple car mags.
- Car and Driver : 3.4
- Motortrend : 3.2
- Edmunds : 3.4 (although no mention about no rollout unlike their P85D review)
And for the P85D's numbers I tend to believe in Motortrends no rollout 0-60 in 3.1 seconds than Edmunds 3.5 0-60.
Car and Driver also got 3.2 for the P85D.
Ok, here's a test for you all. Charge up to 100% and mash it several times. Instead of reading the output on the dash, you really ought to be recording power readings from the API. This takes the guesswork out of reading Tesla's logarithmic scale.
Now... lets throw in that the motor is an AC inductive load, and hence has a power factor below 1... so are we *SURE* the gage on the dash is actually KW load off battery pack, and not KVA off the motor leads (which would be artificially inflated)?
Well, for what it's worth, my gauge goes up a smidge when heat or AC is on and thr car is stopped. So that suggests load off the battery.
And how do you do that?
VT or is there a published API out there that we can snarf up and write our own apps?
Will VT log high enough time resolution to see KW changes every 100 ms?
per Dragtimes, the P85D on v6.2 accelerates 0-60 in 3.05 seconds:
Tesla Model S P85D With Software 6.2 Accelerates From 0 To 60 MPH In 3.05 Seconds
Tesla Model S P85D With Software 6.2 Accelerates From 0 To 60 MPH In 3.05 Seconds
Last edited by a moderator:
lolachampcar
Well-Known Member
Ok, Elon....... I need 0.06 more seconds from you. Come on! Just think of the press. A two second sedan 
qwertzy
Member
Here's some more wood for the fire.
https://www.reddit.com/r/teslamotors/comments/248tcf/details_on_awd_model_s/
Ok, Elon....... I need 0.06 more seconds from you. Come on! Just think of the press. A two second sedan
Charge it up to 100% and you'll probably see it
i think he was referring to the p85d?
The post was 11 months ago. Everything he mentioned has happened apart from redesigned interior and weight saving carbon fibre.
I suppose that makes sense. They would need a production line change and really they need to streamline what they have/
qwertzy
Member
You know what would be funny? If the 85kWh revision E battery packs were actually 100kWh battery packs. :biggrin:
lolachampcar
Well-Known Member
What ever happened to this "rumor" of possible 0-60 performance in 2.8 seconds? Was it indeed nothing more than rumor or is there a thought that it may still come along at some point? Also, I recall that the Tesla web site had some verbiage at one point saying something about the ability to request a software update in the near future that would make the car perform better than anyone outside Tesla would have thought possible. Did anything ever come of that, also?
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