Operation CHARM: Car repair manuals for everyone.
Manuals through 2025 now available!

Our trusted friends have launched a new website named LEMON, which has newer manuals. It also contains all the CHARM manuals.

LEMON is the spiritual successor to CHARM, I recommend you try it!

Link: lemon-manuals.la or lemon-manuals.org.ua

(Some people have issue connecting. LEMON is investigating. For now, use Firefox or change your DNS server)

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Thrust Angles Description






The front wheels aim or steer the vehicle, but the rear wheels control the tracking. This tracking action is relative to thrust angle. Thrust angle (2) is defined as the path that the rear wheels will take. Ideally, the thrust angle is geometrically aligned with the body centerline (1).