HPDE experiments, results and observations

Bartledoo · 06-25-2022, 04:46 PM

Is that throttle accurate?

Bartledoo · 06-25-2022, 04:48 PM

Quote:

Originally Posted by rhyary

LRP T-3 throttle oversteer oops.
And.. you would think driving in the instructor group you will get a timely point-by.

Forgot to open da wheeel

rhyary · 06-25-2022, 04:52 PM

Quote:

Originally Posted by Bartledoo

Quote:

Originally Posted by rhyary

LRP T-3 throttle oversteer oops.
And.. you would think driving in the instructor group you will get a timely point-by.

Forgot to open da wheeel

yap

rhyary · 06-29-2022, 10:01 AM

Shoot me for contributing to waste, but I had to move on from the 285/30/19 RE-050A before cording it. Nothing wrong with that tire especially for endurance type tracks but my theory is that the size is not working.

I have ~opportunity to test sizes of the same tire and I am eager to find out. After 1 day at NYST and one day at LRP, the 285 is not kaput but I am mounting the RE-050A 265/35/19 on the front to compare the two sizes

Datka · 06-29-2022, 02:32 PM

Quote:

Originally Posted by Bartledoo

Forgot to open da wheeel

Agree, you did pinch the wheel...
But is really instructor driving that yellow Porsche?
He missed that apex by a mile lol. Probably mirror driving.

rhyary · 07-07-2022, 09:11 PM

Good day at LRP with DRLane providing advice, observation and coaching from the passenger seat in the first 3 session. Last session went on my own and did back to back 60.78 and 60.52 laps.

Tires:
Front 265/35/19 Bridgestone RE-050A N1 (Porsche) - very happy with these
Rear 275/35/19 Bridgestone S007 K1 (Ferrari) - very happy with these.

First two session my line at T-3 was too tight and @drlane spotted the issue and suggested a wider line.

In addition, the rear was not quite planted and I was running 62sec laps with a passenger.

For the 3rd session I dropped 2psi from the rear and we tried the new line at T3. I was immediately on a 61 pace and best lap was 60.89 - car felt great

Last session I went on my own and did 5 laps under 61 seconds and 4 laps on 61 seconds and it was drizzling to boot :-)

rhyary · 07-07-2022, 09:16 PM

Speed trace an oops.
Two laps are 60.37 (brown my best lap) and 60.52 (green)
Then I came much faster into T-3 I was already on the 13th lap and when I started to turn, car went straight. Hit the brakes too hard - which did not help.

T-3 brown 81.2mph, green 80.9 and gray 85.4

Dbcgolf1 · 07-08-2022, 08:58 AM

Great post. Just curious, what is your optimal tire pressure on these runs?

Thanks,
Dave

rhyary · 07-08-2022, 09:22 AM

Quote:

Originally Posted by Dbcgolf1

Great post. Just curious, what is your optimal tire pressure on these runs?

Thanks,
Dave

I started the day with (PSI) paddock:

Paddock
LF 27 (LRP is mostly right turn track)
RF 28
LR 26
RR 27

Which on 62sec lap went up to
LF 36
RF 36 (T-3)on the left handler, otherwise 34)
LR34
RR 33 (T-3)

But did not like the rear and was on 62sec laps:

For 3rd session I dropped 2 psi from what ever it was at the paddock:

Paddock:
LF 34
RF 34 (pressure equalized at the paddock perhaps because the right size of the car was in the sun)
LR 31
RR 29

best lap was 60.52sec and it was the 13th lap. Pressure reading peeks:
LF 36
RF mostly 34 peek at T-3 36
LR 32
RR mostly 30 peek at T-3 32

Hope this is helpful.

Generically I typically start on 28psi front and 26psi rear. I should have started that day with my usual psi. But the day was 1pm-5pm so the tires were not "morning cold" so I started higher

Dbcgolf1 · 07-08-2022, 10:11 AM

Perfect! Maybe I'll run into you at LRP one of these days.

Dave

rhyary · 07-19-2022, 09:59 AM

This is a very generous shared recording by Mike Skeen because unlike many of his other videos, here he is sharing the brakes channel in addition to the throttle.

By carefully studying his driving, you want to pay attention to his line and mph (of course) but also to where he apply throttle and brakes and specifically to where he gets off the brakes, when he start applying the throttle (in relation to the apex) and where he goes to 100% throttle.

Another thing to pay attention to is his steering. He does not jerks the steering back and forth as some of the YT heroes. Occasionally he does, but generally he is a smooth driver.

I screen scraped his video and I use Racerender to study his driving frame by frame. I find that YouTube controls are not precise enough.

tsk94 · 07-19-2022, 10:54 AM

'YouTube heroes'

Brake trace for a pro driving is always a good thing to study imo.

rhyary · 08-05-2022, 02:08 PM

First day out of three at Watkins Glen was excellent.
Coming into the event my personal best was 2:08.83

Since this is an open day, you come and go as you please.

Within the first part of the morning I did multiple laps on 2:08 and PB of 2:08.43.

The next session I did 2:07.17 for over a second of PB
Then another lap on 2:07.43.

Tires:
Front 265/25/19 RE-71R
Rear 305/30/19 V720

Very happy with the tires. A note about the V720. This tire, and its replacement the V730 ran narrow which is perfect pairing with the 265.

The tread width of the 305 V720 is the same as RR 265/30/19 but the diameter is OEm 265/35/19. The 295/30 is short.

rhyary · 08-06-2022, 08:34 PM

Personal best and dropping 1 sec from PB
Two laps on 2:07 (not same session)

rhyary · 08-09-2022, 08:53 AM

3 days at WGI Stats:

149 laps
17 heat cycles

Front RE-71R did well and done
Rear V720 305/30/19 still good

nsogiba · 08-09-2022, 12:28 PM

Quote:

Originally Posted by rhyary

Personal best and dropping 1 sec from PB
Two laps on 2:07 (not same session)

Excellent work, I enjoyed watching you turn out consistent laps. Hot weekend eh?

Is it normal for the DCT to seem to flare/slip a bit going into 6th under WOT? That shift didn't seem as crisp as the others.

rhyary · 08-10-2022, 07:16 AM

Thank you nsogiba
Hope to see you again in the fall at WGI Oct 1-2

nsogiba · 08-10-2022, 10:15 AM

Quote:

Originally Posted by rhyary

Thank you nsogiba
Hope to see you again in the fall at WGI Oct 1-2

Unfortunately I won't be there, my 6 month old son is having an operation a week prior so it's not realistic that I'll be available.

I look forward to next year and will also try to get out to Toronto Motorsports Park a few more times before the season is over.

I was happy to drop my times from 2:25 during Day 1 to 2:20.6 early on Day 2. Hot temperatures (tires and brakes) on Sunday prevented me from going any faster. I think I could get into the 2:19s if the weather cooperated.

GasBurnlife(landapanda) · 08-11-2022, 05:13 AM

Nice driving rhyary and a really good time in 200 TW tires. I was there as well, but don't recall running into you. I was the blue M2 in garage #11. The open track session on Friday was awesome; too bad we got rained out after lunch. Here is a vid from the very first session on Friday.

rhyary · 08-11-2022, 02:43 PM

Thank you GasBurnlife(landapanda) ,
The open laps day was excellent.
Nice driving yourself, my theoretical lap between the two 2:07 was into the 2:05 so there is hope for me still on 200tw tires.

One day I'll try slicks and see what pace I can be on. But for now, I want to see how fast I can go on 200.

Next challenge is this Sat at LRP, still trying to break 60sec after all these years :-)

Where you there with Will Zaraska ?

rhyary · 08-20-2022, 07:56 AM

CFDS gave up at LRP

https://www.bimmerpost.com/forums/sh...php?p=29242885

V3 is going in

rhyary · 09-03-2022, 05:51 PM

My idea of using all season tires for wet day was a bad idea and I admit defeat.

I may check winter tires for soft rubber, but the all season in the rain were not grippy enough to generate heat on the brakes and in turns. As a result I was driving on cold tires the whole session.

06-25-2022, 04:46 PM	#1035
Bartledoo Driver 2695 Rep 2,715 Posts Drives: 2011 E90 M3 6MT Join Date: Aug 2015 Location: Seattle, WA iTrader: (0) Garage List 2023 Corvette Stingray [0.00] 2002 Porsche Boxster [0.00] 2011 E90 M3 [0.00] 2021 Tesla Model Y [0.00]	Is that throttle accurate? __________________ E90M 6MT Slicktop Single Humper in need of a diet
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06-29-2022, 10:01 AM	#1038
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	Shoot me for contributing to waste, but I had to move on from the 285/30/19 RE-050A before cording it. Nothing wrong with that tire especially for endurance type tracks but my theory is that the size is not working. I have ~opportunity to test sizes of the same tire and I am eager to find out. After 1 day at NYST and one day at LRP, the 285 is not kaput but I am mounting the RE-050A 265/35/19 on the front to compare the two sizes
	Appreciate 0

07-07-2022, 09:11 PM	#1040
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	Good day at LRP with DRLane providing advice, observation and coaching from the passenger seat in the first 3 session. Last session went on my own and did back to back 60.78 and 60.52 laps. Tires: Front 265/35/19 Bridgestone RE-050A N1 (Porsche) - very happy with these Rear 275/35/19 Bridgestone S007 K1 (Ferrari) - very happy with these. First two session my line at T-3 was too tight and @drlane spotted the issue and suggested a wider line. In addition, the rear was not quite planted and I was running 62sec laps with a passenger. For the 3rd session I dropped 2psi from the rear and we tried the new line at T3. I was immediately on a 61 pace and best lap was 60.89 - car felt great Last session I went on my own and did 5 laps under 61 seconds and 4 laps on 61 seconds and it was drizzling to boot :-)
	Appreciate 2 Davisca4552219.50 Dbcgolf17.00

07-07-2022, 09:16 PM	#1041
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	Speed trace an oops. Two laps are 60.37 (brown my best lap) and 60.52 (green) Then I came much faster into T-3 I was already on the 13th lap and when I started to turn, car went straight. Hit the brakes too hard - which did not help. T-3 brown 81.2mph, green 80.9 and gray 85.4 Attached Images
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07-08-2022, 08:58 AM	#1042
Dbcgolf1 Private 7 Rep 98 Posts Drives: 2011 E90 M3, ZCP DCT, Dinan Join Date: Sep 2012 Location: New Jersey iTrader: (0)	Great post. Just curious, what is your optimal tire pressure on these runs? Thanks, Dave __________________ 2011 M3 Sedan DCT ZCP, Dinan exhaust, Vorshlag Camber plates, aFe CAI, Girodisc Rotors, Hotchkis Sway bars, PFC and Ferodo brake pads 2014 Porsche Cayman S 2003 540i M-Sports Pkg, Dinan (retired)
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07-08-2022, 10:11 AM	#1044
Dbcgolf1 Private 7 Rep 98 Posts Drives: 2011 E90 M3, ZCP DCT, Dinan Join Date: Sep 2012 Location: New Jersey iTrader: (0)	Perfect! Maybe I'll run into you at LRP one of these days. Dave __________________ 2011 M3 Sedan DCT ZCP, Dinan exhaust, Vorshlag Camber plates, aFe CAI, Girodisc Rotors, Hotchkis Sway bars, PFC and Ferodo brake pads 2014 Porsche Cayman S 2003 540i M-Sports Pkg, Dinan (retired)
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07-19-2022, 09:59 AM	#1045
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	This is a very generous shared recording by Mike Skeen because unlike many of his other videos, here he is sharing the brakes channel in addition to the throttle. By carefully studying his driving, you want to pay attention to his line and mph (of course) but also to where he apply throttle and brakes and specifically to where he gets off the brakes, when he start applying the throttle (in relation to the apex) and where he goes to 100% throttle. Another thing to pay attention to is his steering. He does not jerks the steering back and forth as some of the YT heroes. Occasionally he does, but generally he is a smooth driver. I screen scraped his video and I use Racerender to study his driving frame by frame. I find that YouTube controls are not precise enough.
	Appreciate 2 DRLane4058.50 tsk941557.00

07-19-2022, 10:54 AM	#1046
tsk94 Lieutenant Colonel 1557 Rep 1,634 Posts Drives: E92 M3, E82 128i, F82 M4, E36 Join Date: May 2017 Location: Calgary iTrader: (2)	'YouTube heroes' Brake trace for a pro driving is always a good thing to study imo.
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08-05-2022, 02:08 PM	#1047
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	First day out of three at Watkins Glen was excellent. Coming into the event my personal best was 2:08.83 Since this is an open day, you come and go as you please. Within the first part of the morning I did multiple laps on 2:08 and PB of 2:08.43. The next session I did 2:07.17 for over a second of PB Then another lap on 2:07.43. Tires: Front 265/25/19 RE-71R Rear 305/30/19 V720 Very happy with the tires. A note about the V720. This tire, and its replacement the V730 ran narrow which is perfect pairing with the 265. The tread width of the 305 V720 is the same as RR 265/30/19 but the diameter is OEm 265/35/19. The 295/30 is short.
	Appreciate 2 Ab28609.00 nsogiba352.00

08-06-2022, 08:34 PM	#1048
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	Personal best and dropping 1 sec from PB Two laps on 2:07 (not same session)
	Appreciate 2 Davisca4552219.50 nsogiba352.00

08-09-2022, 08:53 AM	#1049
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	3 days at WGI Stats: 149 laps 17 heat cycles Front RE-71R did well and done Rear V720 305/30/19 still good Attached Images
	Appreciate 1 GasBurnlife(landapanda)586.50

08-10-2022, 07:16 AM	#1051
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	Thank you nsogiba Hope to see you again in the fall at WGI Oct 1-2
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08-11-2022, 05:13 AM	#1053
GasBurnlife(landapanda) Captain 587 Rep 692 Posts Drives: BMW M2 Join Date: Aug 2012 Location: Ashburn, Virginia iTrader: (0)	Nice driving rhyary and a really good time in 200 TW tires. I was there as well, but don't recall running into you. I was the blue M2 in garage #11. The open track session on Friday was awesome; too bad we got rained out after lunch. Here is a vid from the very first session on Friday.
	Appreciate 0

08-11-2022, 02:43 PM	#1054
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	Thank you GasBurnlife(landapanda) , The open laps day was excellent. Nice driving yourself, my theoretical lap between the two 2:07 was into the 2:05 so there is hope for me still on 200tw tires. One day I'll try slicks and see what pace I can be on. But for now, I want to see how fast I can go on 200. Next challenge is this Sat at LRP, still trying to break 60sec after all these years :-) Where you there with Will Zaraska ?
	Appreciate 1 GasBurnlife(landapanda)586.50

08-20-2022, 07:56 AM	#1055
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	CFDS gave up at LRP https://www.bimmerpost.com/forums/sh...php?p=29242885 V3 is going in
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09-03-2022, 05:51 PM	#1056
rhyary Banned 1608 Rep 2,883 Posts Drives: 2013 M3 Join Date: May 2015 Location: Albany, NY iTrader: (0)	My idea of using all season tires for wet day was a bad idea and I admit defeat. I may check winter tires for soft rubber, but the all season in the rain were not grippy enough to generate heat on the brakes and in turns. As a result I was driving on cold tires the whole session.
	Appreciate 0