Brochure

Trailer Alignment
and Tire Wear
Alignment Angles Affect
Rolling Resistance and
Fuel Consumption
Misaligned trailer axles cause tandem scrub,
resulting in rapid wear on all tires.
If the trailer doesn’t track correctly, it exposes
more area to wind resistance. This can af fect
handling and fuel economy.
While the effects of misalignment show clearly in
tire wear, the effects on fuel consumption are less
easy to quantify. Fuel consumption is affected by
many factors.
However, it is obvious that misalignment must
increase rolling resistance – and rolling resistance
is a major cause of fuel consumption.
Scrub
Angle
The same conditions that cause tandem scrub on
tractors also apply to tractor-trailer combinations.
Geometric Centerline
Alignment
Geometric Centerline Alignment can be used as a
reference from which to compute individual toe
angles. The Geometric Centerline of a vehicle is
established by placing a line from the midpoint of
the front axle and the midpoint of the rear -most axle.
The Geometric Centerline is not based on frame
rails or cross member reference points.
The alignment system will establish the
Geometric Centerline.
Geometric
Centerline
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