I don't think you will ever get a clear answer to this question. A longer runway has a higher flex, which lowers maintenance. But if the extra fuel burnt to get to that runway is excessive, than who are we kidding'? If your company's beancounters does not provide specific guidance, then they probably don't care either way.
As far as safety is concerned, as long as the numbers are correct, it should not matter to take the shorter runway. Not even at the hearing afterwards.
Last edited by PENKO; 20th Apr 2016 at 14:12.