| The scrub radius is a distance between Steering Axis | | | | for retaining the stability of the wheel. |
| Inclination and center of the wheel where both of | | | | Net effect of the running of an offset LESS in |
| them would theoretically be touching the road. | | | | positive is a poor steering control that develops tram |
| Steering axis is a line between the lower ball joint and | | | | lining seen over the surfaces. The wheels would pull |
| the top most pivot of the hub. On the McPherson | | | | off on either of the sides which would encourage |
| strut, the top most pivot point is the strut bearing | | | | instability at high speed. Such sorts of effects could |
| whereas the bottom point consists of the lower ball | | | | be lessened simply by setting the front wheel |
| joint. Making use of suspension using the lower and | | | | alignment to the neutral. However, in many of the |
| the upper control arms, pivot points are placed | | | | cases it would simply be unwise for the usage of |
| where the upright connects the control arms. The | | | | wheels that alters scrub radius of cars. This is the |
| Inclination to the steering axis could be measured as | | | | main reason why many of the insurance companies |
| the angle between the centerline and the steering | | | | don't pay out on accidents that involve cars with |
| axis. This means, if camber is found adjustable at the | | | | after market wheels. |
| pivot points then SAI can be changed. Therefore, | | | | A larger scrub radius, four inches or maybe about |
| altering the scrub radius by altering the width of the | | | | 100mm were used earlier in most of cars. Its |
| offsets of the wheels could allow you to run the car | | | | advantage is that the tire rolls just as wheel is |
| safely. | | | | steered that reduces on the efforts while parking the |
| If the centerline is inboard then the scrub radius is | | | | car. This also helps in increasing the width of the |
| positive ad if it is outboard of tire centerline then the | | | | engine bay which is quite an important point in most |
| scrub radius is a negative one. The rear wheel drive | | | | of the sports cars. The scrub radius is of very much |
| trucks and cars mostly have a positive scrub radius | | | | importance in regards with the steering stability and |
| and the FWD cars have negative or a zero scrub | | | | the wheel alignment. In case of a small scrub radius, |
| radius as they are having a higher level SAI angle. In | | | | contact patch would be spun in the place while |
| order to alter the scrub radius, usage of the wheels | | | | parking the vehicle and it takes a lot of effort. An |
| having different offset than the stock could prove | | | | advantage of the scrub radius is that the small scrub |
| helpful. The main purpose of the scrub radius is to | | | | radius allows the steering to become bit less of |
| provide help center wheels after the cornering also | | | | sensitive for braking inputs, particularly. |