follow ft86club on our blog, twitter or facebook.
FT86CLUB
Ft86Club
Delicious Tuning
Register Garage Members List Calendar Search Today's Posts Mark Forums Read

Go Back   Toyota GR86, 86, FR-S and Subaru BRZ Forum & Owners Community - FT86CLUB > 2nd Gens: GR86 and BRZ > GR86 General Topics (2nd Gen 2022+ Toyota 86)

GR86 General Topics (2nd Gen 2022+ Toyota 86) General topics for the GR86 second-gen 86


User Tag List

Reply
 
Thread Tools Search this Thread
Old 08-19-2021, 06:53 PM   #15
timurrrr
Senior Member
 
timurrrr's Avatar
 
Join Date: May 2019
Drives: '17 BRZ with PP
Location: Between Sonoma and Laguna Seca
Posts: 1,290
Thanks: 1,603
Thanked 930 Times in 540 Posts
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
In my experience, the most precise way to measure a 0–60 in our cars is to
  • log the speeds from the ABS sensors of the the front wheels from the CAN bus
    (50 updates per second, 0.02s time precision)
  • find what data is coming from those ABS sensors at a constant 60 mph when driving
    in a straight line (highway?) and using an external GPS as a speedo

Using front ABS sensors instead of any data from the rear wheels eliminates wheel slip
from the calculations.

And then GPS is really good at measuring constant speed,
but really bad when measuring changing speed.
timurrrr is offline   Reply With Quote
The Following 2 Users Say Thank You to timurrrr For This Useful Post:
JusTheG (08-23-2021), Pete (08-19-2021)
Old 08-19-2021, 07:37 PM   #16
JesseG
Senior Member
 
JesseG's Avatar
 
Join Date: Aug 2019
Drives: 2016 Scion FR-S
Location: Dallas
Posts: 799
Thanks: 2,638
Thanked 388 Times in 264 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by timurrrr View Post
Jason himself has a great video on different ways to measure 0–60:



I don't remember where, but I heard an opinion that Toyota is known
to not use aggressive clutch dumps when measuring 0–60, similar to
what Porsche is known for. Makes GR 86 indeed look like a Porsche, lol.

I actually like that approach, because it’s similar to what a driver would do in the real world. If you want your clutch and differential to last anyway.
I remember way back in the day with my 2002 WRX I launched it really hard one time. Trying to merge from a stop onto a highway (it’s not supposed to be a highway but people fly on this road). I probably got the very best 0-70 that my WRX was capable of. But I felt so bad for the clutch and AWD system. I only launched it that way ONE time.


Sent from my iPhone using Tapatalk
JesseG is offline   Reply With Quote
Old 08-19-2021, 08:02 PM   #17
soilent
Member
 
Join Date: Jan 2014
Drives: 2016 BRZ sold. 2022 BRZ soon.
Location: New Orleans, LA
Posts: 72
Thanks: 2
Thanked 16 Times in 12 Posts
Mentioned: 1 Post(s)
Tagged: 0 Thread(s)
Whaaat. That's crazy. Why are the "official" numbers so much higher in 0-60 and especially weight? Obviously 60 times will be all over the place, but surely they know how much the car weighs. Here's to hoping the power figures have been underrated too ha.
soilent is offline   Reply With Quote
Old 08-19-2021, 08:26 PM   #18
Razorwing
Member
 
Razorwing's Avatar
 
Join Date: Aug 2021
Drives: 2023 Toyota GR 86
Location: Markham, ON
Posts: 23
Thanks: 2
Thanked 3 Times in 3 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
if those official stats are inaccurate, that would mean MPG stats would probably be also inaccurate?
Razorwing is offline   Reply With Quote
Old 08-19-2021, 09:10 PM   #19
Lantanafrs2
Senior Member
 
Join Date: Jan 2018
Drives: 2013 frs red
Location: South Florida
Posts: 2,890
Thanks: 1,794
Thanked 2,547 Times in 1,361 Posts
Mentioned: 4 Post(s)
Tagged: 1 Thread(s)
Quote:
Originally Posted by Razorwing View Post
if those official stats are inaccurate, that would mean MPG stats would probably be also inaccurate?
Mileage figures are usually inaccurate for most of us. Acceleration figures as well. Driving styles and conditions are different. Mileage gets curved up to please the govt and acceleration numbers that are a little slower might make it easier to insure.
Lantanafrs2 is offline   Reply With Quote
Old 08-19-2021, 09:45 PM   #20
timurrrr
Senior Member
 
timurrrr's Avatar
 
Join Date: May 2019
Drives: '17 BRZ with PP
Location: Between Sonoma and Laguna Seca
Posts: 1,290
Thanks: 1,603
Thanked 930 Times in 540 Posts
Mentioned: 21 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Razorwing View Post
if those official stats are inaccurate
The 0–60 times are accurate in the sense that they are what they measured
following their test protocols. If they (or Porsche) think that clutch dumps
are not allowed to determine 0–60 times, they get "conservative" results.

Any car can do 0–60 in less than 3 seconds if you throw it off a cliff,
but it doesn't mean this is how Toyota should measure 0–60
timurrrr is offline   Reply With Quote
The Following User Says Thank You to timurrrr For This Useful Post:
~el~jefe~ (08-24-2021)
Old 08-19-2021, 11:13 PM   #21
NARFALICIOUS
Senior Member
 
NARFALICIOUS's Avatar
 
Join Date: Aug 2015
Drives: '88 MA70-JZX100, '16 86, '20 J29
Location: Johto Region
Posts: 521
Thanks: 50
Thanked 317 Times in 184 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by Lantanafrs2 View Post
Mileage figures are usually inaccurate for most of us. Acceleration figures as well. Driving styles and conditions are different. Mileage gets curved up to please the govt and acceleration numbers that are a little slower might make it easier to insure.
Published MPG is tested by the EPA, not the manufacturer.
__________________
NARFALICIOUS
Noob Poster
1988 | 2016

NARFALICIOUS is offline   Reply With Quote
Old 08-20-2021, 12:48 AM   #22
Blighty
Senior Member
 
Join Date: Oct 2012
Drives: Pegasus White Toyota 86 GTS
Location: Melbourne
Posts: 644
Thanks: 623
Thanked 460 Times in 233 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Garage
Quote:
Originally Posted by NARFALICIOUS View Post
Published MPG is tested by the EPA, not the manufacturer.
I was just reading up on some EPA the other night, and due to just the number of new car models each year, manufactures do the majority of the testing - the EPA do 15-20% of the new models each year though, so its a gamble if you don't tell the truth. Something Hyundai found out
Blighty is offline   Reply With Quote
Old 08-20-2021, 12:54 AM   #23
Blighty
Senior Member
 
Join Date: Oct 2012
Drives: Pegasus White Toyota 86 GTS
Location: Melbourne
Posts: 644
Thanks: 623
Thanked 460 Times in 233 Posts
Mentioned: 4 Post(s)
Tagged: 0 Thread(s)
Garage
I hope they weight the BRZ too.
Blighty is offline   Reply With Quote
The Following User Says Thank You to Blighty For This Useful Post:
~el~jefe~ (08-24-2021)
Old 08-23-2021, 01:35 AM   #24
FRSBRZGT86FAN
Senior Member
 
FRSBRZGT86FAN's Avatar
 
Join Date: Jun 2013
Drives: 2015 FR-S AT, 2019 CX-5
Location: Philadelphia, PA
Posts: 4,201
Thanks: 3,052
Thanked 2,057 Times in 1,374 Posts
Mentioned: 31 Post(s)
Tagged: 2 Thread(s)
Quote:
Originally Posted by timurrrr View Post
Jason himself has a great video on different ways to measure 0–60:



I don't remember where, but I heard an opinion that Toyota is known
to not use aggressive clutch dumps when measuring 0–60, similar to
what Porsche is known for. Makes GR 86 indeed look like a Porsche, lol.

Also important to note the use of rollout or not when testing like some magazines do
__________________
OFT Stage 2 UEL E85/Nameless Performance 3 inch axleback with 5 inch mufflers/ TRD CAI / CNT UEL/ Cusco Strut BAR & LHD Brake Stop / "JDM" Toyota Badges / WinJet JDM headlights - DRL MOD from fteightysix.com - 5000K Diode Dynamics HID kit / Diode Dynamics LED interior Lights and sidemarker bulbs / JDM Clear Sidemarkers / Diode Dynamics LED switchbacks/ OLM LED rear turn signals / Tap Turn Relay
FRSBRZGT86FAN is offline   Reply With Quote
Old 08-23-2021, 04:09 AM   #25
LancePower
Senior Member
 
Join Date: Aug 2016
Drives: 2020 BRZ tS
Location: NJ
Posts: 433
Thanks: 64
Thanked 165 Times in 100 Posts
Mentioned: 3 Post(s)
Tagged: 0 Thread(s)
I always use roll out....


LancePower is offline   Reply With Quote
The Following 2 Users Say Thank You to LancePower For This Useful Post:
WolfpackS2k (10-18-2021), ~el~jefe~ (08-24-2021)
Old 08-24-2021, 01:34 PM   #26
~el~jefe~
Banned
 
Join Date: Aug 2016
Drives: 2019 MX-5 RF
Location: Long Island, NY
Posts: 601
Thanks: 829
Thanked 240 Times in 153 Posts
Mentioned: 2 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by LancePower View Post
I always use roll out....



heck yeah.
~el~jefe~ is offline   Reply With Quote
Old 08-24-2021, 04:22 PM   #27
humdizzle
Senior Member
 
Join Date: Apr 2015
Drives: 2018 GT3 / 2015 M3
Location: Missouri
Posts: 278
Thanks: 95
Thanked 303 Times in 114 Posts
Mentioned: 5 Post(s)
Tagged: 0 Thread(s)
Quote:
Originally Posted by soilent View Post
Whaaat. That's crazy. Why are the "official" numbers so much higher in 0-60 and especially weight? Obviously 60 times will be all over the place, but surely they know how much the car weighs. Here's to hoping the power figures have been underrated too ha.
acceleration times can be misleading. porsche usually is conservative for instance. they'll give you the 0-60 time of what the car can run in the worst possible conditions and surface.

then you have the dodge demon which they claimed ran a 9.1 ... but in real life against a tesla plaid on the strip it struggled to get a 10.2 while gutted on slicks. trapping a 134 with 1000hp is frankly embarrassing. Ferrari has also been known to inflate their figures as well... often sending seperate test cars for acceleration testing and track testing to journalists.

weight is also a gray area. dry weight / curb weight. fluids and gas or not.

the only test that really matters is real world stuff. what owners are getting on the scales at home and what they run at the quarter mile.
__________________
2018 GT3
2015 M3
Past: 458 Italia, R35 GTR, E36/E46 M3, 335i, Scion FRS
humdizzle is offline   Reply With Quote
Old 08-24-2021, 04:57 PM   #28
FlyingJett
Member
 
Join Date: Dec 2018
Drives: Scion frs
Location: Latvia
Posts: 26
Thanks: 11
Thanked 7 Times in 7 Posts
Mentioned: 0 Post(s)
Tagged: 0 Thread(s)
Japan manufacturers measure from idle, German measures from launch control.

So, if BMW says that 320i will take 6.8s to 100 - it means that you need to use their electronic launch control on dry surface and temperature must be something about 15 celcius.
FlyingJett is offline   Reply With Quote
 
Reply

Thread Tools Search this Thread
Search this Thread:

Advanced Search

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump

Similar Threads
Thread Thread Starter Forum Replies Last Post
PP Brembo front rotor weight, lighter-weight alternatives? ZDan Suspension | Chassis | Brakes -- Sponsored by 949 Racing 23 11-16-2021 11:50 PM
GR86 In R7 of the Toyota Gazoo Racing GT Cup + GR86 coming to Grand Turismo Sport Blighty GR86 General Topics (2nd Gen 2022+ Toyota 86) 37 07-18-2021 04:38 PM
ADVAN GT 18" Concave Face ** Actual Wheels Pics and Weight Pics RavSpec Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 10 11-21-2014 12:16 AM
Weight Reduction vs. Weight Distribution (for track use not for drag..etc) glamcem Tracking / Autocross / HPDE / Drifting 21 07-01-2014 12:38 PM
Actual Weight For FRS??? DanPO Wheels | Tires | Spacers | Hub -- Sponsored by The Tire Rack 3 03-22-2012 06:07 PM


All times are GMT -4. The time now is 11:36 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2022, vBulletin Solutions Inc.
User Alert System provided by Advanced User Tagging v3.3.0 (Lite) - vBulletin Mods & Addons Copyright © 2022 DragonByte Technologies Ltd.

Garage vBulletin Plugins by Drive Thru Online, Inc.