CarX Builder
C4

Grip · AWD

PGT AWD

PGT (Porsche 911 GT3)

by Kelss1k · published on 11/10/2026 · 253 views

Use as a base

440

Power

1470

Weight

335

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)
440
Rev limiter (rpm)
9000
Low torque (Nm)
203
Mid torque (Nm)
217
High torque (Nm)
219
Turbo pressure (bar)
1
Fuel
Sport
Peak power (HP)
440 @ 8855 rpm
Peak torque (Nm)
412 @ 6400 rpm
Powerband (dyno)
7873 – 8855 rpm

Chassis

Weight (kg)
1470
Front weight balance (%)
41
Center of mass height (inches)
10.8
Wheelbase (m)
2.451
Front track (m)
1.27
Rear track (m)
1.35
Front wheel spacer (cm)
37
Rear wheel spacer (cm)
31

Tires

Front tires
285/25 R20
Rear tires
285/25 R20
Front tire grip (index)
1.08
Rear tire grip (index)
1.08

Aero

Drag coefficient (Cx)
0.3
Air Resistance (Sx)
1.92
Front downforce (kg)
45.5
Rear downforce (kg)
42

Gearbox

Number of gears
6
Default final drive (ratio)
3.494
Default last gear (ratio)
0.92
Gear spacing
Standard

Spec sheet

Installed parts

Engine

M275A

  • Block BLC2 Racing
  • Camshaft CSH3_high Racing
  • Cylinder head HCE2_high Racing
  • Intake manifold INT2_rpm Sport

Gearbox

T60 PGT

  • Gearbox GBT [P] Prototype
  • Clutch CLH [P] Prototype
  • Differential Clutch 65 Ultimate
  • Drivetrain AWD Ultimate

Body

R&T

  • Front aero Front aero [P] Prototype
  • Fuel tank FT + 50 [P] Prototype

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 BR3 Racing

Wheels

  • Front rims 285/25 R20 Ultimate
  • Rear rims 345/25 R20 Ultimate
  • Front tires Racing +5 Racing
  • Rear tires Racing Racing
  • Front spacers W +0.1 Ultimate
  • Rear spacers W +0.1 Ultimate
  • Tyre compound Racing+ Racing
01

Transmission

Final drive 3.521
Gear 1 3.75
Gear 2 2.38
Gear 3 1.72
Gear 4 1.34
Gear 5 1.08
Gear 6 0.92

Gearbox: T60 PGT (declared by you, in the form or when sharing).

Your gearbox ratios are kept and only the final drive is adjusted, so the last gear reaches top speed at the top of the power band. This is not an optimal gearing: in our simulations on the game's tracks, no other rule does demonstrably better, whatever the discipline. Not validated in game.

Gearbox recalculated on 2026-09-25: corner exit speed and target top speed are no longer used, and the final drive stays within the game's slider range. The proposed ratios, and the differential that depends on them, may differ from those shown before.

02

Differential

Front

Accel lock 0.53
Decel lock 0.27
Preload 57Nm

Values computed for your car and kept within the sliders of your differential (a Clutch 65 if none is declared).

Rear

Accel lock 0
Decel lock 0
Preload 121Nm

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.

03

Suspension

Front

Stiffness 130kNm
Anti-roll bar 35.2kNm
Slow bump 8600
Fast bump 4300
Slow rebound 17400
Fast rebound 10800

Rear

Stiffness 182.4kNm
Anti-roll bar 36.2kNm
Slow bump 12100
Fast bump 6200
Slow rebound 24400
Fast rebound 15200
04

Steering, camber & toe

Caster 4.06°
Steering angle 49.74°
Ackermann 58.61%
Braking 62.5% AV
Front camber -3.11°
Rear camber -4.27°
Front toe 0.05°
Rear toe 0.114°
Calculation details & input data

Theoretical top speed

335.2 kph

Max speed (aero drag)

335.2 kph

Powerband

7873 → 8855 rpm

Gear 123456
Top speed per gear (km/h) 88138191246305335
Power
440 hp
Weight
1470 kg
Class
C4 (299.3 HP/t)
Front balance
41 %
Rev limiter (rpm)
9000
Wheelbase (m)
2.451 m
Center of mass height (inches)
10.8 inches
Front
285/25 R20 · 1.08
Rear
285/25 R20 · 1.08
Front/rear frequencies
3.2 / 3.2 Hz
Target roll gradient
0.069°/g · TLLTD 49.3 %
Curves extracted from the screenshot

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