Eight years since Queensland woman Tina Greer disappeared her heartbroken family still don't have answers.

Key points: Tina Greer was last seen at a Beechmont Road home in the Scenic Rim on January 18, 2012

Tina Greer was last seen at a Beechmont Road home in the Scenic Rim on January 18, 2012 Her car was found on a dirt road near Governor's Chair Lookout

Her car was found on a dirt road near Governor's Chair Lookout A $250,000 reward is offered for any fresh details surrounding what police suspect is a cold case murder

Lili Greer was just 13 years old when her mother, 32, left her with friends on the Gold Coast before driving west to see her boyfriend Les "Grumpy" Sharman on January 18, 2012.

Lili described her Mum as the "strongest woman" and said she needed answers.

"I beg you to please come forward … I'm haunted daily by the unknown," the now 21-year-old said.

"I just need closure — not a day passes I do not think of her and I miss her more than ever".

Tina Greer's car was found on a dirt road near Governor's Chair Lookout in the Scenic Rim region on January 21 that year.

Despite extensive searches in the area, including in nearby Lake Moogerah, Tina Greer's body has never been found.

Tina Greer's car was found on a dirt road near Governor's Chair Lookout in the Scenic Rim on January 21, 2012. ( Supplied: Queensland Police Service )

Cold case murder suspected

On Friday her daughter Lili Greer joined police in appealing for information about what happened to her Mum.

A $250,000 reward has been offered for any fresh details surrounding what police suspect is a cold case murder.

Lili Greer, now 21, was 13 when her Mum went missing. ( ABC News: Talissa Siganto )

Ms Greer was last seen at a Beechmont Road home in the Gold Coast hinterland around 2:00pm on Wednesday, January 18, 2012, intending to travel to Clumber.

Detective Inspector David Briese said Mr Sharman was apparently the last person to see Ms Greer before she was reported missing.

"He was obviously a person of interest since the investigation began but he died in a traffic crash in 2018," he said.

"Someone out there will know and have knowledge of what happened to Tina, and where she may be."

Tina Greer's body has never been found. ( Supplied: Queensland Police Service )

'Give Tina the peace she deserves'

Police are also urging the man who called homicide detectives in Brisbane in mid-2014 to contact them again.

Tina Greer hugs her daughter Lili, date and location unknown. ( Supplied: Queensland Police Service )

"The information provided was fairly broad, but it involved that two persons being involved in the disappearance of Tina and her murder and the subsequent disposing of her remains" Detective Inspector Briese said.

"We want to see the right people brought to justice," he said