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Six-time Olympic gold medal winner Sir Chris Hoy says Sir Bradley Wiggins has "a 99% chance" of breaking the world hour record on June 7.

Tour de France winner and four-time Olympic champion Wiggins, 34, will try to beat Rohan Dennis' mark of 52.4km (32.5m) at London's Olympic velodrome.

"If Bradley really sets his mind to it you would not bet against him breaking the world record," said Hoy.

"Everything he has set out to achieve he has."

Wiggins took part in his last road race for Team Sky at the Paris-Roubaix spring classic on Sunday and will now return to the track to race the team pursuit for Great Britain at the Rio Olympics in 2016.

Hoy, who has since retiring from cycling, added: "Bradley's now focusing on the track and [the hour record] is the perfect transition from the road back on to the track.

"It's a big challenge, a big test, but I think Bradley is definitely capable of breaking the record."

Fellow British riders Graeme Obree and Chris Boardman both held the record in the 1990s.

Another of Wiggins' compatriots, Alex Dowsett, will make an attempt on the mark on 2 May in Manchester.

Hoy believes Wiggins can boost Great Britain's team pursuit squad in Rio after the disappointment of finishing second to Australia at February's World Championships.

"Bradley will be the iconic figure and in many ways that's what the team needs," Hoy said. "It will take a lot of pressure and the focus away from everybody else.

"They can focus on their job of winning medals and Bradley can take the pressure on his shoulders."