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2:00.75 Best Lap - Buttonwillow Circuit - BMW E46 M3
irokdayellup
Location:
United States
Level:
Amateur
irokdayellup
Lap Date : 02 Dec, 1974
2min 0.75sec (+5.15s)
Buttonwillow Raceway (Circuit)
BMW E46 M3 2004 (w/kumho)
Race
Tire: 200 V730
Front Pad: Raybestos ST45
Rear Pad : Raybestos ST43
Tire Size: 265/35/18
Published on 25 Oct, 2025

2.00.75 best lap from my first time running Buttonwillow Circuit.
Not every day you get to drive a new track. Also ran double run groups. Ran the sim for a while and knew the course pretty well going into the event. Think I enjoyed it more in real life. (Sim is probably due for a new version. Is older than the actual track.)

Kinda frustrated that I PB'd the first session and never really shaved any time the rest of the day. Either good that I can lay a lap down right out the gate or bad that I made no additional progress throughout the day. Knowing there is more time on the table. I will go with the second one...

Optimal at the end of the day was a 1.58.87. Just couldnt put it all together clean. Leaves plenty of room for another event in a year or two. This will have to do for now. I definitely can't show up to a track and throw down killer laps right away. Still need more experience and comfort baked in. Chip away slowly. See no reason I couldnt hit the optimal on a second go.

Had the same issue at this track as CW13 with my shifting points. The G-forces and realness aspect complicated the downshift for me. Took a few corners in 3rd and ate the mini-bog, to focus on the driving the line. Is probably possible to increase my min-speed entry and make third work. When I was downshifting later in the day. Seemed it was worth about ~.2 seconds of pace. Is nearly half a second just on those 2 corners with one technique change. Building this type of consistency and memory across every corner is de way to shave.

10/05/25 track day hosted by Speed Ventures. Red + Green Group (Open Passing).

Suspension:
- TC Kline D/A coilovers 550/700
- Ground Control camber plates
- Bimmerworld sway bar links
- Hotchkis front sway bar
- Rogue Engineering strut bar

Brakes:
- AP Racing 9660 front bbk
- Stoptech slotted rear rotors
- Raybestos ST45/PFC08 pads
- ECS brake lines
- Bimmerworld brass brake bushings

Wheels:
- Apex EC-7 18x10et25 wheels
- Kumho V730 265 (Day 2)

Engine:
- Beisan VANOS
- BE/ARP rod bearings
- Radium oil catch can
- Eventuri carbon intake
- DO88 radiator
- DO88 oil cooler

Chassis:
- 3350lbs full tank
- RTD REVO1 reverse lockout shifter
- OMP WRC-R XL bucket seat
- Brey Krause seat mounts
- SCHROTH Flexi 6-point harness
- Autopower roll bar
- Rogue Engineering transmission bushings
- Powerflex diff/rtab/subframe bushings
- Turner subframe reinforcement
- Anti-Gravity battery
- DIY rear seat delete
- Full interior
- Garmin Catalyst lap timer

Comments
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