Auckland's illegal motorcyclists slammed for 'diabolical' behaviour

A motorcycling club president is describing the behaviour of the illegal motorcyclists who rampaged down an Auckland's motorway as "diabolical".

Hundreds of illegal motorcyclists rode through an Auckland motorway on Saturday, causing mayhem for other road users.

One video posted online showed a group blocking part of a motorway as riders were doing burnouts and filling the road with smoke.

Southland Motorcycle Club's Andy Underhay told The Project on Tuesday if these bikers keep it up, someone's really going to get hurt.

"There's a time and a place for everything and that is just not the time or the place," he said.

"Absolutely ridiculous… I mean - we all try to go out, have fun, enjoy ourselves but what they did just took it to a stupid level and it was just totally out of order".

When asked by The Project's guest Urzila Carlson whether he's worried someone's going to get hurt from stunts, he replied "yes".

"I mean, quite callously, I'm not worried if they get hurt - it's their own fault - but there's a good chance they'll hurt somebody else and it's the innocent bystander you've got to feel sorry for - not the rider who comes off."

A police spokesperson said in a statement they've started making arrests, and said the drivers showed a "blatant disregard" for other road users.

"Police were aware of the dirt bike ride involving a large number of motorcyclists in Auckland on Saturday and were monitoring the situation," a police spokesperson said in a statement.

"Many of the bikes involved are not designed to be ridden on sealed roads and the riders have shown a blatant disregard for other road users and their own safety.

"Any offending identified will be followed up and investigated."