Touge · RWD
DX7 C4 touge
DX7 (Mazda RX-7 (FD3S))
by Rev · published on 13/11/2026 · 6 views
258
Power
862
Weight
281
Max speed (aero drag)
Inputs
Values used for the calculation
The car data entered for this build. Enter the same values to get the same setup on your car.
Engine
- Power (HP)
- 258
- Rev limiter (rpm)
- 8300
- Low torque (Nm)
- 386
- Mid torque (Nm)
- 318
- High torque (Nm)
- 235
- Fuel
- Sport
- Peak power (HP)
- 258 @ 6500 rpm
- Peak torque (Nm)
- 381 @ 3500 rpm
- Powerband (dyno)
- 4750 – 8300 rpm
Chassis
- Weight (kg)
- 862
- Front weight balance (%)
- 49
- Center of mass height (inches)
- 10.9
- Wheelbase (m)
- 2.419
- Front track (m)
- 1.45
- Rear track (m)
- 1.45
Tires
- Front tires
- 265/40 R16
- Rear tires
- 265/40 R16
- Front tire grip (index)
- 1.08
- Rear tire grip (index)
- 1.08
Aero
- Drag coefficient (Cx)
- 0.28
- Air Resistance (Sx)
- 2.04
- Front downforce (kg)
- 43
- Rear downforce (kg)
- 46
Gearbox
- Number of gears
- 6
- Default final drive (ratio)
- 3.108
- Default last gear (ratio)
- 0.8
- Gear spacing
- Standard
Spec sheet
Installed parts
Engine
BM13
- Block BLC [P] Low torque : 386 N·m Prototype
- Camshaft CSH [P] High torque : 235 N·m Prototype
- Cylinder head HCE [P] Mid torque : 318 N·m Prototype
- ECU Leave stock Stock
- Exhaust EXS [P] Prototype
- Exhaust manifold EXM [P] Prototype
- Fuel system EFS5 Ultimate
- Intake manifold INT [P] Peak RPM : 10683 rpm Prototype
- Turbo Leave stock Stock
Gearbox
T50S
- Gearbox GBT [P] Prototype
- Clutch CLH [P] Prototype
- Differential Clutch 65 Ultimate
- Drivetrain Leave stock Stock
Body
Stage 4
- Weight reduction Weight reduce [P] Prototype
- Body strengthening Leave stock Stock
- Front aero Front aero [P] Prototype
- Rear aero Rear aero [P] Prototype
- Fuel tank Leave stock Stock
Suspension
- Front springs F_SS [P] Prototype
- Rear springs R_SS [P] Prototype
- Front shocks F_S [P] Prototype
- Rear shocks R_S [P] Prototype
- Front anti-roll bar F_SB [P] Prototype
- Rear anti-roll bar R_SB [P] Prototype
- Front arms F_ARM [P] Prototype
- Rear arms R_ARM [P] Prototype
- Brakes BR [P] Prototype
Wheels
- Front rims 265/40 R16 Sport
- Rear rims 265/40 R16 Sport
- Front tires Racing Racing
- Rear tires Racing Racing
- Front spacers Leave stock Stock
- Rear spacers Leave stock Stock
- Tyre compound Racing+ Racing
Transmission
Gear ratios and final drive calculated by the Build Lab for this discipline.
Differential
Values computed for your car and kept within the sliders of your differential (a Clutch 65 if none is declared).
Differential: Clutch 65 (declared).
Stability first: the rear must never let go before the front. Preload keeps the inner wheel from spinning over a bump at the throttle you hold through a typical corner (computed from aero and tyre drag) and keeps the lock smooth between throttle and lift-off. Acceleration lock adds only what is still needed so the inner wheel doesn't spin up to 60 % of your lateral grip: on a rear-wheel drive car, more would push the rear out (in-game hint). Coast lock is half the acceleration lock (1.5-way), gentle so the car doesn't rotate when slowing down.
Suspension
Front
Rear
Steering, camber & toe
Car resting on its wheels, standing still (static load, no roll or load transfer). In game, set -6.62° in the garage.
Car resting on its wheels, standing still (static load, no roll or load transfer). In game, set -4.12° in the garage.
Aerodynamics and weight reduction
Brakes and tyres
Gearbox: extras
Calculation details & input data
Theoretical top speed
281.4 kph
Max speed (aero drag)
281.4 kph
Powerband
4750 → 8300 rpm
| Gear | 1 | 2 | 3 | 4 | 5 | 6 |
|---|---|---|---|---|---|---|
| Top speed per gear (km/h) | 116 | 138 | 166 | 198 | 238 | 281 |
- Power
- 258 hp
- Weight
- 862 kg
- Class
- C4 (299.3 HP/t)
- Front balance
- 49 %
- Rev limiter (rpm)
- 8300
- Wheelbase (m)
- 2.419 m
- Center of mass height (inches)
- 10.9 inches
- Front
- 265/40 R16 · 1.08
- Rear
- 265/40 R16 · 1.08
- Front/rear frequencies
- 2.6934276764315 / 2.9648483668508 Hz
- Target roll gradient
- 0.069°/g · TLLTD 59.8 %
Engine curves
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