Davide Giugliano blames a lack of rear wheel grip for his underwhelming results at Donington Park for round six of the 2015 World Superbike championship.

The Italian had qualified strongly by putting his Aruba.it Ducati on the front row but was unable to maximise his good grid position due to a lack of feeling from his rear tyre in both races.

In race one Giugliano had so little faith in his rear that he pitted to change the Pirelli and also complained of similar problems in the second race.

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The 25-year-old wasn't the only rider to suffer with grip on the abrasive Donington Park circuit, as championship leader Jonathan Rea said his race two tyre 'was like riding on ice'.

"I'm very disappointed with the race one result," Giugliano said. "I was really struggling with the grip and so decided to come into the pitlane and get the rear tyre changed. Doing this meant I lost too much ground and there was no way to catch up once back on track, but at least we understood what the problem was.

"In race 2, I was hopeful that I'd be able to do better but from mid-race the grip dropped off and I was unable to ride as I wanted to."