P58 M TwinPower Turbo
Power
A 3.0-litre twin-turbo inline-six derived from the road car's S58 —
the clearest piece of technology transfer here. Racing changes the
hardware where endurance demands it: dry-sump lubrication, dual
throttle valves, a revised mounting angle.
- Configuration
- 3.0 L twin-turbo inline-six
- Power
- up to 590 hp (434 kW)
- Torque
- up to 700 Nm (516 lb-ft)
- Lubrication
- Dry sump
- Based on
- Production S58
Quoted before Balance of Performance. Series organisers restrict
every GT3 car to level the field.
Six-speed sequential
Drivetrain
Drive goes rearward through a straight-toothed sequential six-speed,
an evolution of the gearbox BMW ran in the M8 GTE. Straight-cut
gears trade refinement for strength and lower losses — the right
trade in a car that never has to be pleasant on a motorway.
- Gearbox
- 6-speed sequential
- Gear type
- Straight-toothed
- Clutch
- Electro-hydraulic, paddle
- Layout
- Front engine, rear drive
The clutch includes stall prevention — meaningful in a car handed
between amateur and professional drivers mid-race.
Steel shell, carbon skin
Chassis
Not a carbon monocoque, despite the assumption. The bodyshell is
steel, built at BMW's Regensburg plant alongside the road car, with
an FIA-compliant safety cell welded into it. The carbon fibre is the
bodywork hung on top.
- Bodyshell
- Steel, Regensburg plant
- Safety cell
- Welded, FIA-compliant
- Panels
- Carbon fibre (CFRP)
- Windows
- Makrolon® polycarbonate
- Base
- M4 Coupé (G82)
Adjustable, both ends
Aerodynamics
Both ends of the aerodynamic platform adjust, which is how a team
answers a circuit — long straights want the wing wound off, a
twisting lap wants it back on.
- Front
- Adjustable splitter
- Rear
- Adjustable wing
- Bodywork
- Carbon fibre (CFRP)
Designed around the pit stop
Brakes & wheels
The braking system's headline feature is not a disc diameter but
serviceability: fast caliper and disc exchange systems, and quick
couplings on the brake lines. In endurance racing, the time taken to
replace a worn component is itself a performance figure.
- Service
- Fast caliper + disc exchange
- Lines
- Fast couplings
- Wheels
- 18-inch
- Width
- 12.5 in front · 13 in rear
BMW does not publish disc diameters or caliper piston counts for
this car, so none are quoted.
Fixed seat, moving everything else
Cockpit
Because GT3 crews swap drivers mid-race, the seat is fixed and the
car adapts around whoever is in it: both the pedal box and the
steering column adjust. The wheel was developed with FANATEC and
matches their simulator hardware, so a driver can learn the exact
controls before touching the car.
- Wheel
- FANATEC, sim-compatible
- Seat
- Fixed
- Adjustment
- Pedals and column
- Climate
- 2× the M6 GT3's airflow
FIA safety cell
Safety
The welded cage, the fuel cell and the fire suppression system are
the three structures a GT3 car is really built around. The fuel cell
is an ATL safety bladder rather than a rigid tank, made to survive a
deformation that would split one open.
- Cage
- Welded, FIA-compliant
- Fuel cell
- ATL safety cell
- Capacity
- ≈120 L (31.7 gal)
- Fire
- Built-in extinguishing