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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Steering Axis Inclination

Steering Axis Inclination (SAI) is the inward tilt (at the top) of the steering axis from vertical. The inclination angle is the angle between true vertical and a line passing through the center of the upper mount and lower ball joint as viewed from the front of the vehicle. SAI helps the vehicle track straight down the road and assists the wheel back intro the straight-ahead position. SAI on front-wheel-drive vehicles should be negative.