ASE T5 Suspension & Steering practice test
The T5 test covers truck steering and suspension: integral power steering gears, kingpins, leaf and air spring suspensions, ride height valves, wheel-end service, and total vehicle alignment on tandem axles. Required for Master Truck status.
Insufficient positive caster on a heavy truck steer axle typically causes:
How the T5 test works
50 scored questions
+ ~10 unscored research questions
75 minutes
computer-based, at a test center
$62 per test
plus one $34 registration fee per order
Valid 5 years
then a shorter recertification test
ASE does not publish one universal passing percentage; the passing standard is set by test. TorquePrep uses 80% as a conservative practice target, not as an official ASE cut score. The certificate is issued once ASE verifies your required work experience.
What the T5 test covers
The official task list for T5 Suspension & Steering (Medium-Heavy Truck) breaks down into these content areas — the practice bank above draws from all of them:
- Steering column, gear, and linkage — integral power gears, drag link, kingpins
- Suspension systems — leaf springs, air springs, ride height control valves
- Wheel bearings — adjustment and TMC-style procedures
- Wheels and tires — duals, matching, and wear diagnosis
- Total vehicle alignment — steer axle, tandem thrust and scrub angles, frame
Frequently asked
- How many questions are on the ASE T5 test?
- The T5 test has 50 scored questions plus about 10 unscored research questions, with a 75-minute time limit.
- How does truck alignment differ from car alignment?
- The same angles apply at the steer axle, but trucks add rear-axle thrust and tandem scrub angles, frame squareness, and axle positioning — misaligned tandems drag tires and burn fuel.
- What is a kingpin?
- The steel pin that the steer-axle knuckle pivots on in a solid I-beam axle. Kingpin and bushing wear is measured with a dial indicator while the wheel is levered — a core T5 task.
Exam length, timing, fees, and content areas checked September 11, 2026 against the official ASE test table and ASE study guides.
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