NASA and Mazda Motorsports announced in October that NASA was launching Spec MX-5 as its newest national class starting in 2026, but released the news without naming a spec tire.
Through feedback, internal testing and validation, NASA is pleased to announced that it has selected the Hoosier SMX as the dry tire and the Hoosier SMXW as its wet weather tire for the series. This is the same tire that will be used beginning in 2026 by the Sports Car Club of America.
“By electing to use the same tires, we believe it will pave the way for greater series growth, ease of use and transition for Spec MX-5 racers across the country,” said NASA CEO Jeremy Croiset. “Tire choice is critical for any sanctioning body and especially for a racing series like Spec MX-5, and we made the decision with all the deliberation it deserved. Ultimately we hold the needs of the competitor in the highest regard, and that is what drove our decision. We think racers will agree.”
Prices for the SMX dry tire are $290 apiece and $305 each for the SMXW wet tires.
NASA also is pleased to release its 2026 rules for Spec MX-5, which also were adapted with minimal changes to satisfy the needs of new and existing competitors. The new NASA rules also were written to foster continued growth of the Spec MX-5 racing series.
“The Hoosier SMX and SMXW were developed specifically for the Spec MX-5 platform, and NASA’s selection of them as the spec tire for the class underscores Hoosier’s long-standing role in spec racing,” said Paul Menting, VP of Sales, Hoosier Racing Tire. “The focus of the SMX tire is consistency, durability, and predictability, all of which are essential in a spec environment, while providing the same reliability and performance they expect from Hoosier.”
An innovative and robust new contingency plan also will accompany the NASA Spec MX-5 tire program. When there are 5 or more starters, first- and second- place finishers will win one free tire, as will sixth- and 10th-place finishers.
“This is a major milestone for Mazda Motorsports’ grassroots racing program,” Mazda Motorsports Business Development Manager Josh Smith said. “Adding Spec MX-5 as a NASA national class on a common tire makes the series more attractive. We want to ensure the future of Mazda’s popularity in grassroots racing, and we are excited to see what the future holds for Spec MX-5 in NASA regions around the country.”
