From the unmistakable shrill howl of the four-rotor 1991 Mazda RX-7-001 GTO to the thundering Chevrolet V-8 growl of a 1985 ...

IMSA President John Doonan has teased further growth for IMSA’s GTP class in the coming years during today’s pre-Rolex 24 press conference. Doonan spoke directly about the potential for additional ...

GTP and GT classes will see an additional variable added into the equation meant to even out the performance playing field.

"I think their leadership is very engaged, communicates very well, are youthful in their thinking," added Brown, whose privately owned United Autosports team competes in IMSA's LMP2 class.

IMSA striped Tower Motorsports of its LMP2 class victory at the Rolex 24 at Daytona because of a technical infraction. The victory was given Wednesday to runner-up United Autosports, the team co ...

IMSA Classic Saturday morning at the 63rd Rolex 24 At Daytona truly offered race fans and competitors alike a period-correct ...