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Old 06-29-2020, 01:09 PM
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Doug Huffman Doug Huffman is offline
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AAA All-season Tire Testing: AAA Proprietary Research into performance differences

There have been recently here questions and comments on particularly noise from tires, and speculation into various correlations. This is the first analysis report that I found. I will not spend any more time or effort on tire noise.

AAA All-season Tire Testing: AAA Proprietary Research into performance differences of all-season tires
Quote:
Originally Posted by AAA
Abstract

AAA conducted primary research to understand first, the performance differences between high- priced and low-priced all-season tires and second, performance differences between new tires and those worn to a tread depth of 4/32. Characteristics including stopping distance on a wet road surface, maximum lateral acceleration on a wet road surface and noise-vibration-harshness (NVH) were evaluated on varying types of pavements typically encountered on public roadways.

U.S. sales data spanning a four-year period (2013 2016) was used to determine the most frequently purchased passenger car and light truck. As a result, the Toyota Camry and Ford F-150 were selected as test vehicles to represent their respective categories. For each vehicle, the most common original equipment (OE) tire size was tested.

Research Questions:

1. Are there performance differences in certain scenarios between high-priced and low-priced tires?
a. Quantitatively determined by analysis of wet stopping distances, wet maximum lateral
acceleration and NVH characteristics.

2. Are there performance differences in certain scenarios between new tires and tires artificially worn to a tread depth of 4/32 in terms of:
a. Wet stopping distance?
b. Wet maximum lateral acceleration?
3. What is the average cost difference between a new high-priced tire versus a new low-priced tire?

Key Findings:

1. On average, new high-priced tires did not perform significantly better than new low-priced tires in terms of stopping distance on a wet road surface, maximum lateral acceleration on a wet road surface and NVH characteristics.

2. Compared to new tires, tires worn to a tread depth of 4/32 exhibit:
a. An increased stopping distance of 42 percent for the Toyota Camry and 44 percent for the
Ford F-150. When decelerating from 60 mph, worn tires are still traveling at 39 mph and 37 mph at the average stopping point of new tires for the Toyota Camry and F-150, respectively.
b. A decreased maximum lateral acceleration on a wet road surface of 33 percent for the Toyota Camry and 28 percent for the Ford F-150.

3. A set of four higher priced tires cost, on average, $247.52 more for the Toyota Camry and $203.80 for the Ford F-150.
. 65 pages


https://www.aaa.com/AAA/common/AAR/f...udy-Report.pdf
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