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06/08/2025 Sonoma Raceway SpeedSF HPDE GR86 1:50.7 Lap
NoStreetRacing

NoStreetRacing is an advocacy group and initiative focused on promoting safe, legal racing and driving practices. Dedicated to preventing illegal street racing, they encourage enthusiasts to participate in controlled environments such as track events and time attack competitions. By emphasizing the importance of safety, legal racing, and community engagement, NoStreetRacing works to protect both drivers and the public. Their efforts include organizing events, raising awareness, and providing resources to keep motorsport fun and responsible. Through their actions, they continue to foster a safer and more organized motorsport culture.

Location:
United States
Level:
Amateur
NoStreetRacing
Lap Date : 09 Jun, 2025
1min 50.7sec (-0.54s)
Sonoma Raceway (Long)
Toyota GR86 2023 (NoStreetRacing/CRS)
Medium
Tire: 200 Champiro SX2
Front Pad: G-LOC R10
Rear Pad : G-LOC R12
Tire Size: 225/45/17
Published on 19 Jun, 2025

Trying Nankang CRS on my GR86. First time using 200TW tires in almost 4 years. I was targeting 1:50 but it took me a while to get used to its grip level. While I was improving in a few turns through out the day, in the afternoon it was just a bit too hot so eventually I didn't break into 1:50. The roll stiffness of my car definitely doesn't fit these super200tw tires. The load transfer were way slower at esses compared to when I had SX2s. The car is also very understeering at this point. I estimate there are about 1 sec in T3-T3A, T7 and T8-T8A in total if the balance is a bit more neutral. Time to find a larger sway bar.

Mods:

225/45/17 Nankang CRS v2. New
Enkei TS5 17x8 ET45
Bilstein B6 with Tein H Tech springs, front pedders tophat and double camber bolts, front bumpstop replaced with Bilstein E4-AP2-Z118A00. Rear OEM bumpstop was trimmed by 1/3
Perrin 19mm front sway bar, stiff slot
Subaru WRX 16mm rear sway bar.
SPL RLCA (pre-weight saving version), mounted at higher holes.
Camber: -3.5/-2.5 F/R; Toe: 0 / 1/32inch F/R
AP Racing Endurance front BBK with Powerstop Re-manufactured PP rear brake. GLoc-R10 brake pads.
Verus Rear diffuser
Mobil1 0w40 FS, SYMS oil pan, 0.7qt overfill over max line. 
CANMIM oil pressure data injector kit designed by me.

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