CJ Wilson Racing’s Tyler McQuarrie topped the charts during the first day of Continental Tire SportsCar Challenge practice at Mazda Raceway Laguna Seca.

McQuarrie turned a best lap of 1:35.218 in his No. 35 Porsche Cayman GT4 Clubsport during the cooler morning session.

The lap was 0.826 seconds quicker than the Sebring winning team of Cameron Cassels and Trent Hindman, who set a lap of 1:36.044 during the afternoon session in their Bodymotion Racing Porsche.

The No. 76 Ford Shelby GT360R-C of Paul Holton and Pierre Kleinubing was third quickest with a lap set in the afternoon.

In ST, the No. 17 RS1 Porsche Cayman of Spencer Pumpelly was quickest on the day with a fastest lap of 1:39.790, which was also set in the morning session.

The Continental Tire Challenge debut of Michael Johnson was delayed due to an electrical problem for the No. 54 JDC-Miller Motorsports BMW 228i.

The car is at the Dinan Engineering shop in Morgan Hill, Calif. where it is being worked on.

Qualifying for Saturday’s race will begin at 1:15 p.m. tomorrow and the two-hour and 30 minute race will take the green flag at 1:25 p.m. on Saturday.

RESULTS: Practice 1

RESULTS: Practice 2