for 2015, buhk concentrated on blancpain gt series programme, where he was again runner-up, this time to robin frijns. his team htp decided to use bentley continental gt3 car and make vincent abril as his teammate in the sprint series. they won three races and clinched the championship title. but in the endurance series, buhk raced with m-sport team with andy soucek and maxime soulet as his teammates. they finished the season tenth finishing in point all races but 2015 24 hours of spa.