E9x M3 LAP TIMES (Road Course)

[AriuSen]

Originally Posted by jakob66

No, mine are 2 ways. The spring recommendation came from KW in Germany.
Why do you think they can take only so much, what do you think is the limiting factor? Curious.
I'm not even maxed out in rebound and bump.



.

Well I can't be 100% sure. Maybe you could be right. This info was when I called kw and he told me the springs can take +- 200 lbs more

[AriuSen]

Originally Posted by jakob66

No, mine are 2 ways. The spring recommendation came from KW in Germany.
Why do you think they can take only so much, what do you think is the limiting factor? Curious.
I'm not even maxed out in rebound and bump.



.

Damn but those rates is so high....it even makes me think you are relying 90% on the springs and 10% on the dampers no? Maybe I am wrong once again. Don't know much about suspension

[jakob66]

Originally Posted by m3SennA

Damn but those rates is so high....it even makes me think you are relying 90% on the springs and 10% on the dampers no? Maybe I am wrong once again. Don't know much about suspension

In the middle of the curve (assuming flat track and car has settled) you do fully rely on springs and sway bar only. The dampers have -at this point- not much to say. With stock springs I was riding on bump stops all the time. My spring rates in comparison to other race E92 M3 are not much different. However, I use my car for track/DD (90/10). I would not recommend to test ride deep pot holes.

[jakob66]

Originally Posted by m3SennA

track: Buttonwillow
Time: 1:55.996
Stock engine / MT / no aero / stock seats / dsc off / rear seat delete + rear panels
mods: straight pipe + rpi gtm muffler
stoptech bbk + stoptech sr34 pads
kw clubsport 2 ways with swift springs
tires: maxxis rc-1 275 square with apex ec7 18x10
gotta thx my pb to m3number86 for the suspension tuning and to kaiv for fixing some lines!

You're really trying hard!!




.

[kaiv]

Great vid Alex! You were driving your ass off!!

Here's my more modest lap ;-)

Track: buttonwillow 13cw
Time: 1:57.68
Brakes: stock with PFC01
Tires: 275 NT01
Suspension: JRZ RS Pro

[AriuSen]

jakob66
kaiv

Thanks guys.....i was indeed, but my goal would be to go fast driving smooth like you 2.......saw both videos and seems effortless and at same time so fast!

[lutfy]

Originally Posted by jakob66

I lowered the car so much that the roll center was way off. I now have grip in the front. Over the winter I will get aero and take another 100lbs out of the car. I guess I will see you at VIR in early spring?

Congrats on your mods, there's still plenty to do on our cars to make them faster.
I have a question for you as you did drive F M4 and E M3. Have you felt a big difference in the differential behavior of both cars? I could imagine that the new M4 diff is better in terms of grip.

Cheers

That would cost you big time with loss of front end bite. Glad you got it sorted! Your's are all the dream mods I would do to my car. Every part well sorted!

I am going to live with my car this way for now. Yes VIR likely in Spring.

Given I only drove 6-7 laps in the newer F8X chassis. One of the areas where I was impressed was ability to put the power down. If you recall you and I were neck to neck at VIR speed wise but coming out of the corners, I felt I had more ability to put the power downright and outright even with increased torque. Yes the predictive diff or whatever they call it on the M4 really works as evidenced in our real life case. Am not an engineer but this thing works as promised:

http://www.bmwblog.com/2014/08/06/bm...-differential/

How much of this is diff is hard to pin point because remember this car was also staggered. IMO the best mod or change of, I EVER did is to stuff the biggest tires I could get for the back. The 275s were getting overwhelmed. Try the staggered setup and thank me later. You can put in wider tires on the 10 inch wide wheels of yours (back only) before jumping to larger rear wheels (what I did and found the bigger tires at the back helpful in ability to put the power down).

Hope this helps, yes not a straight answer but the variables were not constant.

Cheers,

Lutfy

[lutfy]

Originally Posted by kaiv

Kaiv,

You have by far the best helmet (than anyone) on this forum! Kudos....

Lutfy

[///Mobbin]

Originally Posted by lutfy

Kaiv,

You have by far the best helmet (than anyone) on this forum! Kudos....

Lutfy

Just saw this, awesome! I went to the temporary Senna museum set up in Austin during F1 this year, was cool to see all the Senna memorabilia and learn about the legend.

[AriuSen]

Originally Posted by ///Mobbin

Just saw this, awesome! I went to the temporary Senna museum set up in Austin during F1 this year, was cool to see all the Senna memorabilia and learn about the legend.

its my trip to go one day!
i was a fan of senna since kid....saw him 3 times at interlagos.....2 he won 1 he spun out and one thing ill never forget is that I was seating on front roll at start line and he stopped, raised his visor and waved at us.....i took it like he waived to me LOLOL still gives me chills when i remember as I remember perfectly the scene and his face

[kaiv]

Originally Posted by lutfy

Kaiv,

You have by far the best helmet (than anyone) on this forum! Kudos....

Lutfy

Being French I realize it would probably make more sense for me to have an Alain Prost decal but I do love my Brazilians

[M3 Number 86]

Originally Posted by m3SennA

its my trip to go one day!
i was a fan of senna since kid....saw him 3 times at interlagos.....2 he won 1 he spun out and one thing ill never forget is that I was seating on front roll at start line and he stopped, raised his visor and waved at us.....i took it like he waived to me LOLOL still gives me chills when i remember as I remember perfectly the scene and his face

You Brazilian Koreans are crazy. Speaking to me in English then to waiter in Korean then Portuguese to parents.

[AriuSen]

Originally Posted by M3 Number 86

You Brazilian Koreans are crazy. Speaking to me in English then to waiter in Korean then Portuguese to parents.

[redpriest]

Was just for funsies - 8/10ths effort, damp conditions. Didn't want to roll car in mud or die.

'11 E92 M3 ZCP DCT
Track/Course: Thunderhill 3 mile CW
Best Lap Time: 2:08.59 (HLT + iPhone GPS)
Brake Pads: AP Racing Radi-CAL BBK front (CP9660)/rear(CP5040) - Ferodo DS1.11
Tires (Size & Model): 275/275 Bridgestone Potenza RE-71R
Suspension: GC Camber plates (-2.5) Stock ZCP
Other Mods: Dinan front anti-roll bar (middle setting), Macht Schnell Stage 2 intake, BPM Stage II tune (8600 RPM limit), BPM DCT tune, Akrapovic Evolution exhaust (full), Castrol SRF React brake fluid

[redpriest]

Virtual best is 1:59.59 - tried very hard to break underneath 2:00 on Sunday but couldn't do it - kept making little mistakes here and there that kept me around 2:01 consistently.

I'm shocked how long these RE-71Rs have lasted, not even corded yet and I really tried since they are almost bald away from the center. 16 sessions all told on the weekend for 5 hours of on-track time. Rears were just about bald starting out, and the fronts had only a little bit of wear left towards the shoulders when I started.

'11 E92 M3 ZCP DCT
Track/Course: Buttonwillow CW13
Best Lap Time: 2:00.32 (HLT + iPhone GPS)
Brake Pads: AP Racing Radi-CAL BBK front (CP9660)/rear(CP5040) - Ferodo DS1.11
Tires (Size & Model): 275/275 Bridgestone Potenza RE-71R
Suspension: GC Camber plates (-2.5) Stock ZCP
Other Mods: Dinan front anti-roll bar (middle setting), Macht Schnell Stage 2 intake, BPM Stage II tune (8600 RPM limit), BPM DCT tune, Akrapovic Evolution exhaust (full), Castrol SRF React brake fluid

[joe@trinityautosport]

'08 E92 M3 6 spd
Track/Course: Buttonwillow CW13
Best Lap Time: 1:59.2
Brakes: Stoptech Trophy St60/St40 (ST45 front pads & ST43 rear pads) Way too aggressive for the rears so will be switching to R4's.
Tires (Size & Model): 275/275 Bridgestone Potenza RE-71R
Suspension: JRZ Motorsport Double Adjustable with SWIFT
Other Mods: Macht Schnell Stage 2 intake, Custom 2 into 1 Exhaust

[Greg S]

MSRH CW
Date: 1-24-16
Lap time: 1:38.537(TT3 record)
Car: 2008 BMW M3 DCT
Total vehicle weight with driver: ~3580 lbs
Wheel horsepower: 376 peak WHP
Tire size and model: 275/35/18 Hoosier A7
Estimated ambient temperature: ~40*
Notes: MCS double adjustable remote reservoir, all solid/spherical bushings/bearings, PFC front BBK, gutted rear interior, 1 race seat, stock pass seat, I/H/E, tune, pullies, front and rear wing

[MT/RWD]

Track: Bahrain international circuit (GP circuit)
Best time: 2:27.0
Car: M3 e92 2008, Manual gear
Brakes: DTC-30 with SS lines and RBF 600 fluid on stock calipers/rotors
Tires: Toyo R888 255/35 fr, 295/30 18 rear
Suspension: KW clubsport 2 way
Engine: Stock
Other mods: Rear seats removed

Camber setup was -1.5 (max.) rear and -2.2 front.

I shaved ~6 sec. From my stock lap time.. lot more to come

[SYT_Shadow]

Greg S I thought the front wing was a photoshop but in the vid you actually drive like that!!

[Greg S]

Originally Posted by SYT_Shadow

Greg S I thought the front wing was a photoshop but in the vid you actually drive like that!!

A surprising number of people think it's a Photoshop, and I'm not sure why.

[SYT_Shadow]

Originally Posted by Greg S

A surprising number of people think it's a Photoshop, and I'm not sure why.

Just never seen a car with a front elevated wing like that

[joe@trinityautosport]

'08 E92 M3 6 spd
Track/Course: Buttonwillow CW13 1/30/2016
Best Lap Time: 1:58.2 (second session...started to rain)
Brakes: Stoptech Trophy St60/St40 (ST45 front pads & ST Stock)
Tires (Size & Model): 275/275 Toyo RR
Suspension: JRZ Motorsport Double Adjustable with SWIFT
Other Mods: Macht Schnell Stage 2 intake, Custom 2 into 1 Exhaust