ASE A4 // STUDY HOME
SUSPENSION & STEERING
Alignment angles, ball joints, control arms, struts, racks, electric power steering calibration, body lean under load. The "why is it pulling, drifting, or wearing tires uneven?" track.
ASE A4 EXAM · 40 SCORED QUESTIONS · 60 MIN
A4 READINESS
Not started
Take your first A4 quick test to set your baseline.
RECOMMENDED NEXT
Start with a baseline test
25 questions, 30 minutes. Tells you where you actually stand on A4 before you spend hours studying the wrong topics.
FLAGSHIP SIM · LIVE
A4 Suspension & Steering Diagnostic
Multi-step diagnostic scenario · 60-point scoring · 15-20 min
A4 Modules
0 live · 10 total
PRACTICE TEST
A4 Practice
50 questions · 75 min
FLASHCARDS
A4 Drill
Quick recall
FULL LIBRARY
All Modules
A1–A9 catalog
A4 Resources
REFERENCE · LIVE
A4 Alignment Spec Decode
Camber, caster, toe, SAI, IA, turning radius with SVG diagrams. Adjustment order + pull direction.
Open reference →
PHOTO LIBRARY · LIVE
A4 Tire Wear Pattern Library
Seven tire wear patterns decoded by system (tire / alignment / suspension). Click for zoom.
Open reference →
REFERENCE · LIVE
A4 Ball Joint & Tie Rod Reference
Wear measurement specs, dry-park test procedure, replacement triggers.
Open reference →
REFERENCE · LIVE
A4 Power Steering Diagnostic
Hydraulic, electric, hybrid — pressure specs, EPS scan flow, fluid condition.
Open reference →