CarX Builder

Tuning guide · Track

CarX Street track tune: stiff, flat and stable at speed

Circuit racing means fast, long corners and high speed. The track tune is the stiffest and flattest of the street disciplines, and it favours stability over agility.

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01

Gearbox: built for speed

Long straights and high-speed corners mean the car lives in the upper gears. The ratios are set so the last gear reaches the top speed allowed by aerodynamic drag, with gears spaced to keep the engine in its power band when you accelerate out of the slower corners.

02

Suspension: the stiffest and flattest

At speed, body movement is the enemy: a stiff, flat setup keeps the aerodynamics and the tyre contact stable. Springs, dampers and anti-roll bars are all firmer than for touge or grip. Check that the car still follows the kerbs, and soften the fast dampers if it is unsettled over them.

03

Differential: stability first

A stable differential matters more than an aggressive one. The rear must never let go before the front, so the lock is sized from the real torque, grip and load transfer, with a gentle coast lock.

04

Alignment and brakes

Steering stays stable at high speed, and the brake bias is pushed forward because the load transfers to the front under hard braking from high speed.

Practical tips

  1. 01

    Use the highest tyre pressure the game allows: in game, more pressure gives more speed.

  2. 02

    Test on a lap, not on one corner: stability shows over a full lap.

  3. 03

    A very stiff setup needs smooth inputs, do not judge it on a single mistake.

FAQ

Is the track tune too stiff for the street?

For circuit use it is intended. If you also drive bumpy roads, a grip or touge build suits them better.

Why more front brake bias?

Hard braking from high speed moves the load to the front, so the front tyres can take more of the braking.

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Skip the tuning: Build Lab builds your Track car.

Engine, parts and every setting, computed for you from a class and a driving style. No dyno screenshot needed.

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One Build Lab build free on every account.

See how it works