By Spacers are a cheap & easy way to improve wheel fitment & increase the track width of your car but a fast & easy way to ruin the geometry of your car.
Scrub Radius
What Is Scrub Radius? When viewing a wheel from front view, the scrub radius is the distance between where the extrapolated line of kingpin axis touches the road and the tyre contact patch centre point. If the extrapolated KPI is outboard of the contact patch then the scrub radius is