Mark Webber has renewed calls for formula one drivers to be drug tested after Moto2 rider and fellow Australian Anthony West was found guilty of using a prohibited substance.
The 31-year-old, who competes for the QMMF Racing Team in the feeder class to the MotoGP, tested positive for the stimulant methylhexaneamine following his race at Le Mans on May 20.
West was banned from the sport for one month on Thursday.
Webber said he wasn't familiar with the substance West used, but said a lot of motorcycle riders competed under ''pretty heavy painkillers'' at times.
''Whether it was linked to that, I'm not sure,'' he said. ''Obviously, it's good they're doing what they can to make sure everyone's as kosher as possible but I think it's quite difficult for that category, because you see these guys that are riding … extremely injured.''
Nevertheless, Webber said if West's drug taking was to do with performance enhancing, ''he'll learn from that and move on''.
The Red Bull driver, who goes into this weekend's Abu Dhabi Grand Prix fourth on the championship ladder, said F1's governing body should join its motorcycle counterparts and drug test competitors to provide ''clarity''.
''I've always been championing the idea to do more of it, but the FIA have never really been that strong on it,'' Webber said.
''You know, with what's at stake, the money involved and all that type of stuff, people do things.''
If West decides not to appeal, he will be out of the final round of the Moto2 series at Valencia on November 11. AAP