Professional Training

Training by Qwerty Tyre Solutions (PTY) LTD

The Basics to Understanding Wheel Alignment

Vehicle alignment is pure and applied geometry, a science understood by only a few, and with today's technology the basics of wheel alignment are not always required to rectify most vehicle alignment issues. Technologically advanced 3D systems need users to be systemically trained and demand more computer proficiency than that of suspension setups versus tyre peculiarities versus manufacturing tolerances and vehicle loading etc.

From a purely mathematical perspective, alignment is about a series of arcs, angles and intersecting lines that are supposed to keep a vehicle and all its tyres going in the same direction, with the least amount of drag causing tyre wear.

At Qwerty Tyre Solutions we employ a "Seeing is Believing” strategy to alignment testings and adjusting and for optimum understating of how to correctly set a vehicle’s alignment up we recommend users have at least a basic understanding of such processors for every commercially available light passenger or utility vehicle.

Qwerty Tyre Solutions offers such training courses to its trade customers for a nominal fee. Currently only available in South Africa and Australia to our existing client base.

Train-The-Trainer STR8-LIGN User Training

A typical train-the-trainer training course, aimed at new to STR8-LIGN users to enable them to make an active contribution to the workshop environment through coaching and development of others. It will give trainers the necessary skills and knowledge needed as a foundation from which they can later develop further specialist skills in identifying training needs, training design, training facilitation and training evaluation.

The course content and duration will be dependent upon the specific needs of the organisation.

Video Tutorials

Qwerty Tyre Solutions.

Checking Toe

Str8-Lign allows all four wheels to be checked simultaneously through the use of calibrated lasers attached to each target head. Target heads are attached to each wheel with strong magnets attached to correctly torqued wheel nuts. In automotive engineering, toe, also known as tracking, is the symmetric angle that each wheel makes with the longitudinal axis of the vehicle, as a function of static geometry, and kinematic and compliant effects.Toe angle is the most commonly needed alignment adjustment. Toe angle is the straight ahead position of the tyres. If your tyres point inwards, this would be considered toe-in. If they are perfectly straight, that would be zero toe. If they point outwards that would be toe-out..

Camber Angle

Camber angle is the angle made by the wheels of a vehicle; specifically, it is the angle between the vertical axis of the wheels used for steering and the vertical axis of the vehicle when viewed from the front or rear. It is used in the design of steering and suspension. Camber is an angle that is set, which you can actually see when looking at some vehicles. Camber is the tilt of the top of the tyre according to how it sits on the road. As a rule, most vehicles are set to neutral or slightly negative camber, to allow for even tyre wear, although some sports cars will allow for slightly more negative camber, to increase the handling characteristics at higher speeds..

Caster Angle

The caster angle or castor angle is the angular displacement of the steering axis from the vertical axis of a steered wheel in a car, motorcycle, bicycle or other vehicle, measured in the longitudinal direction.Caster is the angle in which the front suspension is positioned in reference to the vertical position. Caster is only set on the front suspension of your car. On most vehicles this angle is set in a positive manner which assists in steering and vehicle stability at higher speeds. Caster also helps the wheel ‘return to centre’ after turning the steering wheel. This angle does not usually affect tyre wear..

Str8-Lign Setup

It is crucial that Str8-Lgn is setup correctly before any alignment checking procedures, and that the system is periodically calibrated (at least fortnightly, depending on workload).

Testing Setback

Setback is defined, where one of the front wheels is sitting back (relative to the wheel on the other side). Negative setback is the left wheel back (relative to the right) Positive setback is the right wheel back (relative to the left).


Sean, our technical director runs through a full product demonstration on a vehicle to show Str8-Lign's ease of use and accuracy.