A fleet of Tesla Cybertrucks sits outside the Starbase Build Site at SpaceX's South Texas testing facility on February 6, 2026. Credit: Reginald Mathalone / NurPhoto via Getty Images Get the Popular Science daily newsletter💡 Breakthroughs, discoveries, and DIY tips sent six days a week. The wheels may be falling off the Tesla Cybertruck . No, seriously. According to a recent National Highway Traffic Safety Administration (NHTSA) recall alert, an estimated 173 of the stainless steel electric vehicles (EV) may be at risk of cracks forming in the brake rotor studs. These cracks could separate from their wheel hubs. “Wheel hub separation can cause a loss of vehicle control, increasing the risk of crash,” the NHTSA explained in its recall . Such emergencies may even include an entire wheel falling off the EV. The 173 EVs span the Cybertruck’s 2024-2026 models, specifically those equipped with the optional 18-inch steel wheels.…