Double wishbone suspension

Double wishbone designs allow the engineer to carefully control the motion of the wheel throughout suspension travel, controlling such parameters as camber angle, caster angle, toe pattern, roll center height, scrub radius, scuff (mechanical abrasion), and more.

To resist fore-aft loads such as acceleration and braking, the arms require two bushings or ball joints at the body.

For a rear suspension, a pair of joints can be used at both ends of the arm, making them more H-shaped in plan view.

Short spindle SLAs tend to require stiffer bushings at the body, as the braking and cornering forces are higher.

Also, they tend to have poorer kingpin geometry, due to the difficulty of packaging the upper ball joint and the brakes inside the wheel.

During that time MacPherson strut was still in the area of aviation technology and was derived from aircraft landing mechanisms.

Examples of cars with double wishbone suspension include the Aston Martin DB7, the Mazda MX-5, and the third through eighth generation of the Honda Accord.

It is fairly easy to work out the effect of moving each joint, so the kinematics of the suspension can be tuned easily and wheel motion can be optimized.

[citation needed] Double wishbone suspensions are more complex, impose more difficult packaging constraints, and are thus often more expensive than other systems like a MacPherson strut.

Due to the increased number of components within the suspension setup, it takes much longer to service and is heavier than an equivalent MacPherson design.

At the other end of the scale, it offers less design choice than the more costly and complex multi-link suspension system.