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BMW M240i Sonoma 1:52 lap - Speedsf Track Day
Track and Build
Standort:
United States
Level:
Amateur
Track and Build
Runde Datum : 27 Sep, 2021
1Min 52.9Sek (-0.23s)
Außentemperatur: 22 ° C
Sonoma Raceway (Long Pre 2024)
BMW M240i F22 2019 (w/RC-1)
Mittel
Bereifung: 100 Victra RC-1
Reifengröße: FRONT: 235/40/18, HECK: 265/35/18
Veröffentlicht am 21 Aug, 2022

Did three 1:52.9xx laps in the day. In one of those laps I passed a car from inside of T6 exit which could be a 0.5s loss. Also I did not do well in smooth throttle control which can be further improved to get better corner exit. 

Tires are Maxxis RC1 235/40R18 front + 265/35R18 rear (2nd day) 
-3.5 front camber and -2.2 rear camber. Tire wear pattern still showed a little bit lack of camber. I would like to think the suspension is not stiff enough for these tires. Front tires are too tall (being 40 ratio) so it still rubs the fender a little at T6. Will run 245/35R18 or 255/35R18 in the future. 

Ordered 900 lbs/in rear springs to replace the current 565 lbs/in ones. Also ordered bucket seat to free my gorrila steering wheel grip in corners:)

Car: 2018 BMW M240i 6MT RWD (F22) B58 Gen1 engine

Full mod list:

Suspension
* Bilstein B16 DampTronic coilovers
* Turner F22 front/rear sway bars
* SPL front/rear control arms
* Solid rear subframe/diff bushings
* Vorshlag camber plates
Drivetrain
* M performance LSD for M240i
* Bootmod3 stage2 ACN91 tune with DP
Brake
* Stoptech cryo-treated slotted rotors 
* PFC08 pads
Wheel&tire
* Apex EC7 wheels: 18x8.5ET35 front (3mm spacer), 18x9.5ET58 rear (5mm spacer)
* Maxxis RC1 tires (100TW) : 235/40R18 front, 265/35R18 rear

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