Ackerman angles

The Ackerman angle is the term used to describe steering geometry that causes the inside front wheel to turn "tighter" than the outside front wheel.

Any change to the original dimensions will change this angle. All the suspension components & their location, are identical on ALL Metro's. The only differences that are causing this change to the Ackerman angle are:

• The change in wheel type, giving the second Metro group more offset and changing the front track from 1.302m to 1.312m

• The difference in ride height, the second Metro group is set at 1.378m with the first at 1.373m

One other point of interest is the front tracking. All mini models should be set at 1.6mm toe-out EXCEPT the ERA Turbo. The setting for this is 4.7mm to 6.3mm toe-out! You can approximately check your tracking using DIY equipment so long as you have a nice flat, clean floor area. I personally feel across the tyre tread for no greater roughness across the width in either direction.

Maybe this has been increased to correct excessive Ackerman or reduce torque steer. Caster for the Turbo is the same as other Mini models (3deg +/- 1 deg positive), but the Camber is obviously different (2deg +/- 1 deg positive std, the Turbo is 1.5deg negative). You can check your camber & castor angles using DIY equipment so long as you have a nice flat, clean floor area.