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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Off-Vehicle Balancing

Wheel balancing should be performed using an electronic off-vehicle balancer. Although such does not correct for drum or rotor unbalance as does on-vehicle spin balancing, this is overcome by good accuracy, usually to within 3.5 grams (1/8 ounce).

When balancing off-vehicle, locate the wheel on the balancer with a cone through the back side of the center pilot hole (not the wheel stud holes).