The NHRA, in a rules amendment released yesterday, sent a clear message to Pro Stock teams which indicated the shaving or altering of tires for weight loss will not be tolerated.
Posted in SECTION 20: GENERAL REGULATIONS, TIRES & WHEELS: 5, 5.1 TIRES, the rulebook now reads:
"Chemically treating or physically altering (i.e. lightening etc. ) a tire is prohibited by anyone other than the original manufacturer."
CompetitionPlus.com, published on September 2, an item which revealed one unidentified Pro Stock racer's claim others within the class were shaving tires in an attempt to shed weight from their cars. These racers reportedly used large tire machines to spin up and then shave the tread area of their Goodyear Eagles. They were reportedly shaving as much as 3 lbs. off each tire.
The reason for shaving the tires was reportedly so they would spin up faster. Less weight would make this process easier.
CompetitionPlus.com spoke with the Goodyear engineers on site, who said they hadn’t heard about tire-shaving for the last several years. We were told there’s enough tread depth on the Eagle Pro Stock tire that an outright failure probably wouldn’t happen. They wouldn’t rule it out entirely, but did say it was unlikely.
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