S.I. Swimsuit Model Suffers Concussion in Post Indy 500 Wreck

Sports Illustrated model Tanya Mityushina and Carls Jr.hottie Kara Del Toro got wrecked on their way home from the Indy 500 ... TMZ has learned.

Indianapolis cops tell TMZ ... Tanya and Kara were in an SUV on Sunday after leaving the race when a Volkswagen Jetta t-boned their ride.

Two other passengers in the SUV were taken to the hospital by an ambulance ... while Kara and Tanya went back to their hotel -- but once there, Tanya complained of a headache.

Sources close to the models tell us they both went to the hospital where doctors told Tanya she had suffered a concussion. Kara was okay.

Tanya's out of the hospital, but still experiencing head and neck pain.