[rafaeldelrey]

The G80s are faster than Z06 for sure, in most situations.

[NYG]

Originally Posted by rafaeldelrey

The G80s are faster than Z06 for sure, in most situations.

I don't think so. Big power to weight advantage and double wishbones up front on the C7Z.

With same tires the C7Z should still be a significantly faster car but the G8X is ridiculous and doesn't overheat.

[rafaeldelrey]

Originally Posted by NYG

I don't think so. Big power to weight advantage and double wishbones up front on the C7Z.

With same tires the C7Z should still be a significantly faster car but the G8X is ridiculous and doesn't overheat.

I had a C7Z from 2015-2018. They are amazing, but not as good making turns as the G80. I keep flirting with the C8Z. I just love the Vettes I was actually cross shopping C8Z with the M3 CS. I m glad I went with the M3 CS, specially because here in FL, track conditions are not the best for the Vettes. I keep seeing Vettes overheating (engine and brakes) on Sebring. In fact, the guy besides me in the garage, had to return home in a flat bed, after crashing his Vette due to brake fade, in my previous Trackday. I know you can mod and get ride of all heat issues, but my comment was mostly related to stock or very lightly modded cars, in real conditions (not ideal ones).
In a track that depends a lot on straight line acceleration, in optimal conditions, like not having to deal with decaying performance lap after lap, overheating, brake fade, even a Model S Plaid with some track mods, can be faster than a BMW or Vette.

[rafaeldelrey]

Originally Posted by rafaeldelrey

I had a C7Z from 2015-2018. They are amazing, but not as good making turns as the G80. I keep flirting with the C8Z. I just love the Vettes I was actually cross shopping C8Z with the M3 CS. I m glad I went with the M3 CS, specially because here in FL, track conditions are not the best for the Vettes. I keep seeing Vettes overheating (engine and brakes) on Sebring. In fact, the guy besides me in the garage, had to return home in a flat bed, after crashing his Vette due to brake fade, in my previous Trackday. I know you can mod and get ride of all heat issues, but my comment was mostly related to stock or very lightly modded cars, in real conditions (not ideal ones).
In a track that depends a lot on straight line acceleration, in optimal conditions, like not having to deal with decaying performance lap after lap, overheating, brake fade, even a Model S Plaid with some track mods, can be faster than a BMW or Vette.

Forget my impressions. I just found out a C7Z06 doing 2:17 on Sebring on Youtube. This is GT3 RS realm. True respect. Still, for a Sedan, the G80s are awesome.

[Gang80]

Originally Posted by NYG

[B][SIZE="4"]New Jersey Motorsports Park - Lightning

What were your M drive settings? DSC off?

[Hit_Apex]

Originally Posted by NYG

So I unfortunately could barely get my GoPro to work at all this weekend. I think I was able to get my second session recorded with a 1:13.4 but the video is upside down (I can probably flip it in post just need to link it with my XGPS time) so if anyone wants a video reference lap please let me know. There's not a lot of times on youtube for G8x at lightning and most are 1:20+.

Otherwise, I attached the .vbo file for the 1:13.10 with all OBDII and XGPS data.

VBO File: https://file.io/piNJRpY0xfzY

This thing is nearly matching my C7 Z06 at this track, I think I can get it into the low 1:12s but desperately need camber plates for the front.

Everything is factory except I'm running Bimmerworld TA-55 19X10 ET9 square with no spacers.

Tires are Track Attack Pros at 285/35R19

This car is stupid fast!

Where did you set camber?

[NYG]

Here's the second fastest lap I had during my second session where my GoPro worked.

Originally Posted by Gang80

What were your M drive settings? DSC off?

I only got three sessions in so didn't get to experiment much.

4WD DSC On, everything on Sport (Engine, Steering, Brake, Suspension) worked the best for me. I expected Comfort steering to be the best on track like on the F82 but it wasn't, too much precision loss.

The only settings I plan on testing out will be 4WD Sport with DSC off and possibly running Sport Plus on dampers - everything else is money.

Originally Posted by Hit_Apex

Where did you set camber?

Factory. I think it's around -2 which isn't enough. My front left is pretty beat up.

Camber plate install got interrupted by a failed part so I had to reinstall the factory top hats.

I only managed to adjust my front tie-rods to get 1/16" toe-in on the front which was around 0" with me in the car.

[BackOnBlack]

Originally Posted by rafaeldelrey

The G80s are faster than Z06 for sure, in most situations.

Originally Posted by NYG

I don't think so. Big power to weight advantage and double wishbones up front on the C7Z.

With same tires the C7Z should still be a significantly faster car but the G8X is ridiculous and doesn't overheat.

https://grassrootsmotorsports.com/ar...irm-lap-times/

I like their tests more than others. Regular guys doing realistic driving IMO.

[rafaeldelrey]

Originally Posted by BackOnBlack

https://grassrootsmotorsports.com/articles/firm-lap-times/

I like their tests more than others. Regular guys doing realistic driving IMO.

Agree . But they could make an effort to standardize tires. The M2 there was using P4S.

[NYG]

Originally Posted by rafaeldelrey

Forget my impressions. I just found out a C7Z06 doing 2:17 on Sebring on Youtube. This is GT3 RS realm. True respect. Still, for a Sedan, the G80s are awesome.

Yeah, I ran a 2:20 my first time at Sebring with my 7 speed C7Z on Hoosier A7s. It was capable of much more - the car was new for me and I was holding it back but it's a terrifying car at the limit as I found out at Watkins Glen when I wrecked it. I was making almost 600 ft-lbs at the wheels when I dynod it.

[BlueBeamer]

Love my 2023 M4 but it’s not as fast on track by a good amount. 120 flat vs 116 at Roebling Road even w M4 being a mph faster down the straight.
Now every other aspect I take my M4 every day

[jmg]

Originally Posted by BlueBeamer

Love my 2023 M4 but it’s not as fast on track by a good amount. 120 flat vs 116 at Roebling Road even w M4 being a mph faster down the straight.
Now every other aspect I take my M4 every day

At basically the same weight with less power, this isn’t surprising. BMW used steel doors instead of aluminum. The factory wheels are heavy cast wheels. I’m wondering how a set of track wheels and tune will do, and if the 2025 benefits noticeably from its 20hp bump. I just ordered one, so I’ll find out in 3 months!

[DRAGM3]

New PB 1.34:55 at Barber Motorsport Park had a high 1.33s but traffic was not permitting.

BMW M3CS (Millway Camber plates, stainless steel brake lines, motul racing fluid, AA Catted DP, AA single midpipe, cobalt friction brake pads) ran Hoosier TAP 285/35/19 square.

[vrships]

Laguna Seca

1.39.12 —vrships -- 2025 M4C 4WD —ZF8 — stock iron brakes and PZ4 and stock fluid

Driven with DSC off / 4WD

best lap

Rear pads sensor triggered after about 8 session (56 laps)

Tires seem still OK for even one more day?

Enough power whenever you need. The car struggles mid corners with no oversteer and a slight under steer, and the tires squeak almost all the time.

In-session MPG is around 4.5 ( including entering-tracking-warm down)

[rafaeldelrey]

Sebring - 2:20.35 - BMW M3 CS - CSG C1X brake pads F&R, EBC brake rotors, Motul 700, Milway camber plate, Titan 7 TP-10 19x11 square, 285/35/19 Bridgestone RE 71RS, PhD Racing Lvl2 handling kit (no coilover), track oriented alignment (enabled by PhD/SPL parts).

Those laps in the video are the very first ones in the day, right after the inlap. Tire pressure was still too high and I was struggling with a very loose rear. I adjusted pressure in the following sessions and the car was perfect. But I had passengers and couldn't get a single clean lap.

[m4ml]

Big Willow
1:31.70 - m4ml- M4 - xDrive - (Yoko AD09s on Apex VS-5RS, Girodiscs with Pagid RSL-29s, KW V4, Millway camber plates, SPL Rear (some front), Carbahn Stage 2)

This is a sub-30 car for sure. There's a lot of room for improvements in turns 1, 4/5/6, and 9 that will surely shave off seconds. There are several tenths to be had in all of the other corners.

Going into 8 at 141 is interesting to say the least.

Overall, pretty satisfied with my first time at Big Willow.

Ignore the brake and throttle display, as well as the inverted steering wheel, I'm still configuring the Aim Solo 2 DL and I unfortunately chose the wrong signals from the ECU.

[Hit_Apex]

Originally Posted by m4ml

This is a sub-30 car for sure. There's a lot of room for improvements in turns 1, 4/5/6, and 9 that will surely shave off seconds. There are several tenths to be had in all of the other corners.

Going into 8 at 141 is interesting to say the least.

Overall, pretty satisfied with my first time at Big Willow.

Ignore the brake and throttle display, as well as the inverted steering wheel, I'm still configuring the Aim Solo 2 DL and I unfortunately chose the wrong signals from the ECU.

Nice work! There is a lot of speed to be had through turn 8 our cars can carry more speed through apex - we both over brake going into it. It takes several sessions to get comfortable.