Team Sky sponsor explains why Gianni Moscon's wheel collapsed in dramatic TTT crash

Team Sky wheel sponsor PRO has explained why Gianni Moscon's front wheel collapsed catastrophically on stage one of Tirreno-Adriatico.

After what it described as a thorough investigation, the Shimano subsidiary said that the wheel collapse was due to Team Sky mechanics fitting a tyre which was too narrow for the wheel.

"PRO conducted a thorough investigation to replicate the circumstances, to examine its strict safety standards and to ensure that the safety of riders remains the highest priority," the company said in a statement.

>>> Gianni Moscon's front wheel collapses in bizarre crash during Tirreno TTT (video)

"The investigation concluded that the 3-spoke wheel is completely safe to continue racing. The incident occurred because the rider hit a pot hole at high speed on a tyre that did not meet the minimum tyre width specification as advised by PRO.

"PRO advises all customers and riders using its 3-spoke time trial wheel to choose a minimum recommended tyre width of 24mm (622-24), to inspect the wheel for damage following impact and to stop riding in the event of a puncture."

The incident took place in the opening stage of Tirreno-Adriatico, with Moscon crashing hard midway through the team time trial.