Problem:
Tire Pull & Vehicle Drift
One of the most difficult handling issues to fix is a pull problem. Tire forces are the most
elusive, and until recently, unmeasurable conditions leading to pull problems.
Tire-related pulls are caused by lateral forces in the tires. Lateral force is the amount
of left or right pull force created as the tire rolls along the road. This condition may
cause a vehicle to steer away from straight ahead. These forces are primarily created
by conicity and cannot be detected during standard balancing or alignment service. Though
steering drift can be verified through road tests, solving pull-related problems has often
been a trial and error operation
until now.

Net tire pull is the difference between the individual forces of the front tires and determines the direction in which the vehicle may drift.
Solution:
The new StraightTrak® LFM (Lateral Force Measurement*) feature of the Hunter GSP9700 allows the technician to:
Improve customer satisfaction by:
- Identifying and correcting tire-related pull problems
- Enhancing straight-ahead steering stability of the vehicle
Save time by:
- Performing rotations that do not induce problems or comebacks
- Eliminating multiple tire rotations to reposition tires
- Greatly reducing the need for road tests
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