Z4 M4 on track

z4forme · 12-11-2023, 11:25 PM

A friend of mine ran a 1:43 at Laguna in my 2024 Z4 M4. Damn good for a completely stock car! Even passed a GT3.

jdhiro · 12-11-2023, 11:52 PM

The GT3 driver was either slow or not trying, but yeah it certainly meets or beats an M2 out there!

StanDiego · 12-12-2023, 12:56 AM

Quote:

Originally Posted by z4forme

A friend of mine ran a 1:43 at Laguna in my 2024 Z4 M4. Damn good for a completely stock car! Even passed a GT3.

I'm curious what times other cars have run on that track. I guess I'll have to crack open Google tomorrow.

Which Laguna track did your friend run?

Top Gon · 12-13-2023, 11:46 AM

1:43 is pretty decent for a stock z4 m40i. I had a similar time back in July at Laguna. Tires, brake pads/fluid, and a little more camber up front would make it perfect

z4forme · 12-13-2023, 05:20 PM

One of my friend's hot laps.

Top Gon · 12-13-2023, 09:56 PM

I’m curious if it makes a difference to hotlap with the top up. I didn’t care enough at the time to do it. Top down is much more enjoyable

Horseman · 12-14-2023, 07:33 AM

I would love to do this, but not in my car. haha

dholaday · 12-14-2023, 10:25 AM

I didn't notice him using the paddles. Did he run in Sport Plus and let the Z8 do all the shifting?

MisanoblueZ4 · 12-14-2023, 11:06 AM

Quote:

Originally Posted by dholaday

I didn't notice him using the paddles. Did he run in Sport Plus and let the Z8 do all the shifting?

Good question! In some of the various YouTube videos I’ve seen it’s kinda hard to see the paddles being used due to fingers being obscured.

72sirmako · 12-14-2023, 05:59 PM

Thanks for posting that, love watching the Z make it's rounds. I'd love an opportunity to run Laguna, but definitely with better tires than the conti's that came on the Z.

Nick

z4forme · 12-15-2023, 12:50 AM

Quote:

Originally Posted by 72sirmako

Thanks for posting that, love watching the Z make it's rounds. I'd love an opportunity to run Laguna, but definitely with better tires than the conti's that came on the Z.

Nick

Mine came with the Michelins and they feel near perfect on the car for me.

Westside Guy · 12-15-2023, 08:45 AM

Quote:

Originally Posted by z4forme

Mine came with the Michelins and they feel near perfect on the car for me.

IMHO, Michelins are the better tire and perfectly suited for the Z4!

Wynnsiensheng · 12-15-2023, 09:38 AM

Quote:

Originally Posted by MisanoblueZ4

Good question! In some of the various YouTube videos I’ve seen it’s kinda hard to see the paddles being used due to fingers being obscured.

With those gloves on it’s impossible to see!

Top Gon · 12-15-2023, 02:47 PM

Quote:

Originally Posted by Westside Guy

IMHO, Michelins are the better tire and perfectly suited for the Z4!

Mine has the contis

probably explains the slower lap time

z4forme · 12-15-2023, 02:56 PM

Quote:

Originally Posted by dholaday

I didn't notice him using the paddles. Did he run in Sport Plus and let the Z8 do all the shifting?

Yes sport plus using the paddles!

z4forme · 12-15-2023, 03:29 PM

Quote:

Originally Posted by Top Gon

Mine has the contis

probably explains the slower lap time

My friend is a very gifted driver. 1:43 is crazy fast in this car.

Top Gon · 12-15-2023, 06:00 PM

Quote:

Originally Posted by z4forme

My friend is a very gifted driver. 1:43 is crazy fast in this car.

Sub 1:40 is possible with 200tw tires
I managed a 1:40 many years ago with a 135i with full M3 suspension. Similar power to the z4

But yes 1:43 stock in the z4 is amazing

z4forme · 12-15-2023, 07:57 PM

Quote:

Originally Posted by StanDiego

I'm curious what times other cars have run on that track. I guess I'll have to crack open Google tomorrow.

Which Laguna track did your friend run?

The track is Laguna Seca located in Monterey.

Most HPDE cars will run 1:35 to 1:45.

CJ421 · 12-17-2023, 10:18 AM

Quote:

Originally Posted by z4forme

One of my friend's hot laps.

Very nice! Thanks for posting this.

This car can be tricky handling at the limit, you can see it when your friend has to make some quick corrections ...the suspension loads up too quickly and then releases it all with sharp rebound. More compression would greatly improve its handling. But for street use, the Z4's suspension is very good, and obviously, as your friend demonstrated, it can work just fine on a track.

Charles

rikwynnpa · 12-17-2023, 03:06 PM

Lost of steering and suspension adjustments coming with the stick.....

Quote:

Originally Posted by z4forme

A friend of mine ran a 1:43 at Laguna in my 2024 Z4 M4. Damn good for a completely stock car! Even passed a GT3.

hilld · 12-18-2023, 12:36 PM

With the go fast red interior that 1:43 is pretty amazing. My cognac interior would only be able to do a 1:50.

stlcdr · 12-18-2023, 02:50 PM

Ok, slightly on-topic. For those that have tracked their cars, how do the rules work for HPDE and up with a convertible?

The HPDI at my closest track (Corvette track) welcomes convertibles, but the HDPE states "Convertibles MUST HAVE SCCA legal rollover protection to participate in HPDEs".

While doing a track course in my Fiat Spider, they required the top to be up, but it was in their own cars and a follow the leader, so not exactly full out.

Is this track specific? Does the Z4 meet that requirement? Has anyone any experience with this?

12-11-2023, 11:25 PM	#1
z4forme Enlisted Member 114 Rep 47 Posts Drives: 2024 Z4 M4.0i Join Date: Oct 2023 Location: Monterey, CA iTrader: (0)	Z4 M4 on track A friend of mine ran a 1:43 at Laguna in my 2024 Z4 M4. Damn good for a completely stock car! Even passed a GT3.
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12-11-2023, 11:52 PM	#2
jdhiro Lieutenant 667 Rep 490 Posts Drives: X3 M40i Join Date: Oct 2008 Location: Seattle, WA iTrader: (5)	The GT3 driver was either slow or not trying, but yeah it certainly meets or beats an M2 out there! __________________ 2022 X3 M40i E46 330i ZHP, E90, E89 Z4, F30 320i "Jalopnik Edition", F80 Comp, F80 CS
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12-13-2023, 11:46 AM	#4
Top Gon Bashar 413 Rep 1,120 Posts Drives: 2023 BMW Z4 M40i Join Date: Jun 2010 Location: Bay Area, CA iTrader: (4)	1:43 is pretty decent for a stock z4 m40i. I had a similar time back in July at Laguna. Tires, brake pads/fluid, and a little more camber up front would make it perfect
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12-13-2023, 05:20 PM	#5
z4forme Enlisted Member 114 Rep 47 Posts Drives: 2024 Z4 M4.0i Join Date: Oct 2023 Location: Monterey, CA iTrader: (0)	One of my friend's hot laps.
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12-13-2023, 09:56 PM	#6
Top Gon Bashar 413 Rep 1,120 Posts Drives: 2023 BMW Z4 M40i Join Date: Jun 2010 Location: Bay Area, CA iTrader: (4)	I’m curious if it makes a difference to hotlap with the top up. I didn’t care enough at the time to do it. Top down is much more enjoyable
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12-14-2023, 07:33 AM	#7
Horseman Colonel 4132 Rep 2,494 Posts Drives: 2024 BMW Z4 M40i Join Date: May 2021 Location: Texas iTrader: (0) Garage List 2024 BMW Z4 M40i [9.90]	I would love to do this, but not in my car. haha __________________ Retired: 2021 BMW Z4 sDrive 30i - Alpine White/Magma Red
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12-14-2023, 10:25 AM	#8
dholaday Private 102 Rep 67 Posts Drives: 21 Z4 M40; 21 X3 M40; R12GS Join Date: Feb 2023 Location: Dayton, Oh iTrader: (0)	I didn't notice him using the paddles. Did he run in Sport Plus and let the Z8 do all the shifting?
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12-14-2023, 05:59 PM	#10
72sirmako Private 296 Rep 80 Posts Drives: BMW X5 (F15), BMW Z4 (G29) Join Date: Aug 2023 Location: Connecticut iTrader: (0) Garage List 2024 BMW Z4 M4.0i [9.92] 2017 BMW X5 [8.75]	Thanks for posting that, love watching the Z make it's rounds. I'd love an opportunity to run Laguna, but definitely with better tires than the conti's that came on the Z. Nick
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12-18-2023, 12:36 PM	#21
hilld Second Lieutenant 185 Rep 299 Posts Drives: 23 Z4, 18 X1, 22 Rivian R1T Join Date: Nov 2017 Location: PDX metro area iTrader: (0)	With the go fast red interior that 1:43 is pretty amazing. My cognac interior would only be able to do a 1:50.
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12-18-2023, 02:50 PM	#22
stlcdr Captain 1013 Rep 681 Posts Drives: 2022 Z4 M40i Join Date: Feb 2022 Location: Kentucky iTrader: (0)	Ok, slightly on-topic. For those that have tracked their cars, how do the rules work for HPDE and up with a convertible? The HPDI at my closest track (Corvette track) welcomes convertibles, but the HDPE states "Convertibles MUST HAVE SCCA legal rollover protection to participate in HPDEs". While doing a track course in my Fiat Spider, they required the top to be up, but it was in their own cars and a follow the leader, so not exactly full out. Is this track specific? Does the Z4 meet that requirement? Has anyone any experience with this? __________________ 2022 BMW Z4 M40i \| 2021 HD Road Glide Limited \| 2019 Ford Expedition XLT MAX \| Subaru Outback 2019 \| Subaru Outback 2024
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