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1:48.649 - Arizona Motorsports Park - Stock BMW M2 DCT 17'
Ricky Wu
Location:
United States
Level:
Amateur
Ricky Wu
Lap Date : 19 Dec, 2021
1min 48.649sec (-2.99s)
Outside Temp: 15 ° C
Arizona Motorsports Park - AMP (Main Track - CW)
BMW M2 F87 2017 (W/GY SC3R)
Medium
Tire: 100 SuperCar 3R
Tire Size: FRONT: 245/35/19, REAR: 265/35/19
Published on 29 Jun, 2022

Official Lap Time: 1:48.649
RaceBox Lap Time: 1:48.73
Segments Optimal Lap Time: 1:48.20

Max Speed: 117.03mph, 188.34kph
Max Braking G: 0.62
Max Cornering G: 1.22

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2nd ever trackday, 2nd time at AMP, 2nd session of the day, finished 2nd. 

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Very messy driving, lots of errors. Front brake pads were completely done and toasted (Squeals are from the metal of the pads). Tires were already quite worn out. Brake fluid already boiled before. Did not have time to make alignment adjustments after the last (first) trackday.

Camber: F (-1.1°&-1.3°) R (-2.0°)
Toe: F (0.05°) R (0.11°)

- Overall, car is unbalanced, cannot rotate it in the way that I would like to
- Understeers easily when pushed due to small non-adjustable front camber 
- Hard to rotate the rear due to too much rear toe-in
- Snappy corner exit due to too much rear camber relative to the front
- Insufficient front camber also means the front tires get up to temp quickly vs. rear

These were 9th & 10th lap of the day, 4th & 5th flying lap

Dec 18, 2021 Platinum Track Days with ProAutoSports

Data recorded on RaceBox

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95% Stock 2017 M2

Non-OEM:
- Tires: Goodyear Eagle F1 Supercar 3R (245/265 35R19) (Road: 740.5mi, Mountain: 102.9mi, Track: 83.5mi)
- Brake fluid: Motul RBF 660
- Motor oil: Liqui Moly Special Tec B FE SAE 5W-30
- Fuel additive: Liqui Moly Speed Tec Gasoline
- Active Sound Design Off (Fake sound from speakers)

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GoPro Hero 10

Trying out 4K 120FPS, shutter speed at 1/240. Overexposed on the outside, spot meter seems to work better.

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Thumbnail picture credit: Tru Project Racing

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