ChampCar Tech Desk

The tech desk is used to ask technical questions and is not to be used as a post race tech line or to phish for how others built their cars.
Please reference the BCCR as most questions submitted to the TechDesk can be answered by reading the BCCR.
You can download the BCCR here: https:champcar.org/rules

2020-07-27 - Official Miata Width

Q.
Based in the rear wing width rule I am trying to get an official answer on the width of the OEM NA Miata. Since our fenders are wider we can't use that to measure. 

A.
Champcar measured both a spotless unmodified NA and a NB.  Both were 65.9 inches.
Wings can be no wider the stock OEM dimensional width as reported by the Manufacturer or the specification website at automobile-catalog.com
Jay Mauney

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