Unique sculptures made from used tyres are entertaining motorists and attracting a social media following south of Brisbane.

The Park Ridge Tyre Tree sits by the side of the road in Logan and each week a new theme for the homemade installation is unveiled, with current events and requests from the public being sources of inspiration.

The Olympics, beloved children's book characters and the recent popularity of Pokemon have all featured.

Tyres were fashioned into the Olympic rings to celebrate the athletes in Rio. ( Facebook: Park Ridge Tyre Tree )

Creator Cheryl Quinlivan said she started building the tyre sculptures last December when her family moved south from Darwin.

"We didn't have time to put up a Christmas tree so I looked up how to make one from tyres," she said.

"I'm constantly thinking of new designs in my sleep."

The Hungry Caterpillar was a favourite with young neighbours. ( Facebook: Park Ridge Tyre Tree )

Ms Quinlivan said the main aim of the designs was to "spread the joy".

The family have received dozens of cards, thanking them for "brightening their daily commute and making it enjoyable".

A family affair

It takes Ms Quinlivan two weeks to design and collect the materials for each sculpture.

Depending on its complexity, it typically takes her a further two days to build.

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The most difficult sculpture created so far has been a Game Of Thrones piece.

"I had to pull all the tyres apart and reshape them to become a throne," Ms Quinlivan said.

"Plus I had to source the plastic swords to make them look right."

Ms Quinlivan said many local families made a special trip each week to see the sculptures.

Her daughter Sherry said the family all pitched in and helped put the pieces together.

"About two to three weeks before she puts a sculpture up, she's already got ideas running through her head," Sherry said of her mother.

"I love making them with mum."