I've still been seeking and haven't found any real "data" out on 13s (very minimal on 14s)...
did find an interesting statement though (probably not news to you guys)... me want now
Quote:
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Originally Posted by consumersearch.com
New fuel economy ratings coming
A new law requires tire makers to start telling consumers how fuel-efficient a tire is. As part of a sweeping energy bill signed into law in December 2007, the National Highway Traffic Safety Administration must develop a system for rating tires' fuel efficiency. Right now, the only fuel efficiency information comes from independent testing organizations, such as Consumer Reports, which test tires' rolling resistance. The NHTSA is supposed to have the new rule in place by the end of 2009, according to news reports. The law also calls for the creation of a nationwide program to educate consumers about tire maintenance, such as proper tire pressure, alignment, rotation and treadwear -- all of which can boost fuel economy, safety and durability.
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-Edward
Driven on Colorado roads, where NOTHING is flat
Present City 3x / Highway 4x
Goal: 4x / 5x
