Car Tuning Braking System Upgrades 3

Question 1

Which type of brake caliper design typically provides the most consistent clamping force for track applications?

Accepted Answer

Fixed multi-piston caliper

Answer

Fixed multi-piston calipers apply equal force from both sides of the rotor simultaneously, reducing flex and improving feel.

Question 2

What is the function of a brake proportioning valve in a performance braking system?

Accepted Answer

It limits rear brake pressure to prevent rear wheel lockup

Answer

The proportioning valve reduces hydraulic pressure to the rear brakes relative to the front to maintain balanced braking and prevent rear lockup.

Question 3

When upgrading brake calipers on a vehicle with ABS, the technician must ensure:

Accepted Answer

The upgrade does not significantly alter wheel bearing clearance or sensor tone ring position

Answer

ABS relies on accurate wheel speed signals; if the sensor gap or tone ring position is disturbed, ABS may malfunction.

Question 4

Drilled rotors are sometimes avoided in serious track use because:

Accepted Answer

The holes create stress concentration points that can cause cracking under repeated thermal cycling

Answer

Under repeated high-heat cycles, the drill holes act as stress risers and can cause rotor cracking, making slotted rotors safer for sustained track use.

Question 5

What upgrade is most effective at reducing brake pedal travel while improving modulation on a track car?

Accepted Answer

Replacing rubber brake lines with stainless steel braided lines

Answer

Stainless steel braided lines resist expansion under pressure, giving a firmer, more responsive pedal with less travel.

Car Tuning Practice Test

Car Tuning Practice Test

Car Tuning Braking System Upgrades 3