[John_01]

Here is my setup I use for track. I use the stock differential (Non-LSD). It is quite comfortable using street tires.

Engine mods = N55 with BMW PPK2, ETS 5" Intercooler, ER charge pipe.
Transmission = DCT
Exhaust = Stock
Differential = Stock

SUSPENSION:
Koni Yellow front struts
Koni TCK single-adjustable rear dampers
BMW Performance "T3" springs with matching bump-stops (Front)
Swift 500lb 10" coilover springs (Rear)
Ground Control street camber plates
HPA Adjustable rear spring perches and thrust sheets
Powerflex polyurethane rear damper mounts
M3 E93 28mm front sway bar
Non-M E92 13mm rear sway bar
M3 rear subframe bushings
M3 front arms
M3 front tension struts
M3 rear upper arms
M3 rear upper guide rods
1M front strut brace

WHEELS:
Forgestar F14. Front 17x8.5" ET40, Rear 17x9.0 ET52.
TIRES:
Toyo R888 tires for Track only. Front 245/40/17, Rear 255/40/17.

ALIGNMENT:
Front camber = 3.0 degree
Front toe = zero
Rear camber = 2.1 degree
Rear toe = 1/8"

BRAKES:
Pads = Ferodo DS2500
Front shims = Hardbrakes 1mm titanium shims
Front rotors = EBC slot + dimples
Rear rotors = Stock
Fluid = Motul 600
Lines = Goodridge Phantom