Mr Burge added the police determined the crash was an accident and the driver would not be prosecuted.
Mr Tuck’s widow, Kate, told the hearing she was concerned the driver had provided “inconsistent” statements, particularly by giving varying estimates of his speed from 50kph (31mph) to 70kph (43mph) in the 80kph (50mph) zone.
She added photographs of the scene suggested the crash happened before the bend.
Mrs Tuck said: “It was a ghastly accident however we look at it and nothing will bring him back, but it’s hugely disappointing if I feel the record states that my husband was riding on the wrong side of the road and there is no independent evidence to corroborate.”
Mr Burge said: “I do not reach any conclusion that Philip, Felix or Tom were riding recklessly.”
Criticising the investigation, the coroner, said: “Sadly the investigation carried out locally by the gendarmerie was inadequate in my view and leaves many unanswered questions.”
In a tribute to Mr Tuck released after his death, Hatch Mansfield said: “Philip was an immensely kind, loyal and considerate man.”