A coroner has urged police not to pursue drivers unless they involve the most serious crimes, after finding experienced officers failed to ask key safety questions in chases that resulted in the deaths of two teenagers.

Coroner John Olle said in both the 2006 death of Sarah Louise Booth and the 2009 death of Jason Shaun Kumar, it appeared police had failed to ask what would happen if they did not stop the drivers of the cars they were pursuing.

Mr Olle on Monday said police should not be banned altogether from engaging in pursuits, provided the only times they gave chase involved the most serious of crimes and in the knowledge that someone had been harmed, or was about to be.

"Having considered a range of material and evidence on this matter ... I cannot conceive of many situations where a police pursuit would be justified, as the risks are too high to members of the community," he said.

Mr Olle recommended that police should not pursue cars simply because drivers were trying to avoid arrest.