Superintendent John Price speaks to media about January's fatal incident where three teens died in Christchurch.

The mother of two boys killed in a triple fatal crash following a police pursuit has posted a video of her doing a burnout as tribute to her sons.

Glen William McAllister, 16, died along with his brother, Craig Robert Hickey-McAllister and Brooklyn Turia Taylor, both 13, on Sunday after the stolen car they were in hit road spikes and crashed into a tree in Christchurch on Sunday night. The impact ruptured the fuel tank, and the car exploded in what police described as a "ball of fire".

Police confirmed the identities of the three boys on Tuesday.

STUFF Craig Mcallister, 13, Brooklyn Taylor, 13, and Glen Mcallister, 16, died in a crash after fleeing police in Christchurch.

The mother of the two boys, Juanita Hickey, posted a video on her Facebook page on Monday following their funeral.

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* Three teens killed in stolen car after fleeing police in Christchurch

The video shows Hickey, doing a burnout in a red Holden, leaving large skid marks along the road.

STUFF A man stops at the Blenheim Rd site where three teenage boys were killed following a police chase in Christchurch.

"Mum did this for you two xxxx the average chicky don't burnout like that haha bet u boys loved it," Hickey wrote on her Facebook page.

Following Stuff's story on the burnout, Hickey posted on Facebook "meh to the haters".

STUFF The tree the car hit has been carved with tributes left by family and friends.

"Might not be other people's way of honoring their loved ones, however it was OUR WAY! There is no right or wrong in how we grieve or celebrate a loss of loved ones so all the judgmental people, walk in my shoes before you act perfect. I'm as solid as they come. My boys it would have been your style so meh to the haters."

Hickey earlier told Stuff she was in "severe shock" after losing her "babies, my life".Their sister posted a tribute to her "handsome brothers" on Facebook.

"Losing one of you is hard enough, but both of you going has destroyed me. Thirteen and 16 is way too young to be gone." Can't believe I'll never get to see you grow into the men you were supposed to be. I love you both endlessly," she wrote.

NZ POLICE/SUPPLIED The charred remains of the car, which exploded after crashing in Christchurch, killing the three teenage boys inside.

Brooklyn was also farewelled on Monday.

It is understood the three boys had regularly stolen cars throughout the city in recent months. The car involved in the crash was first seen speeding in central Christchurch at 11.13pm on Sunday, reaching speeds in excess of 130kmh and running red lights on Moorhouse Ave.

It had been stolen in Wigram earlier that night. Police appealed for witnesses of both the pursuit on Moorhouse Ave, which lasted about a minute, and of the crash some minutes later.

Two officers who laid the spikes suffered smoke inhalation trying to save the boys from the burning car.

Detective Sergeant Brad Grainger said last week police wanted to hear from anyone who saw the white Mazda Familia before the crash or who witnessed the crash. It is understood the car was stolen from a property in Wigram on Sunday night.

Police are asking for information from anyone who was in the area of Moorhouse Ave or Blenheim Rd around 11pm Sunday.

Anyone with information is asked to call Detective Sergeant Brad Grainger on (03) 363 7400.