C7.R Corvette ended up quickest in GTE Pro won a 3m55.704s set by Antonio Garcia right at the end of the four hours of first session of test day

That jumped the #63 Corvette C7.R ahead of the best of the Ganassi Ford GTs in which Billy Johnson had earlier posted a 3m55.728s.

Porsche driver Gianmaria Bruni and Ferrari's Daniel Serra made it four marques within just over two tenths of a second at the top of the class times.

The quicker of BMW's M8 GTEs was only 12th in class, while the two Aston Martin Vantage GTEs rounded out the class order in 16th and 17th places.