LEYBURN is set to become a hub of burnt rubber, racing engines and excited attendees for the town's most popular race meet.

The Historic Leyburn Sprints celebrate the tradition of motor racing this weekend, and their 21st year on the track is set to be the biggest yet.

Crowds of up to 10,000 people will see for themselves the power of 210 thoroughbred machines representing 90 years of motoring for the round-the- houses time trials, while close to 200 show-and-shine cars and vintage caravans are expected for off-track displays.

The range of cars and entertainment, complemented by a great country atmosphere, add up to one of the Darling Downs' most popular family events, said sprints president Tricia Chant.

"There's nothing else like the Historic Leyburn Sprints, whether you're a spectator or a competitor," Ms Chant said.

"It offers something for everyone and gets better every year without losing its unique appeal," she said.

The sprints entry list features an extraordinary variety of cars, dating in vintage from a 1925 Austin Brooklands to a 2016 motorbike-powered single-seater called a Fly.

The fastest will be 10 cars in the Formula Libre class competing for the outright fastest time around the 1km street course and the prestigious Col Furness Memorial Trophy.

Competitors are expected to complete up to seven runs across the weekend.

Between runs, the six high-powered cars in the Hog's Breath Cafe-Maxtrek Tyres Drift Demo Team will entertain spectators with a series of spectacular, tyre-smoking demonstrations.

Off-track, up to 40 vintage caravans are expected for their annual two-day display and about 140 cars will line up for Sunday's Shannons Show 'n' Shine competition.

Other attractions include market stalls, food and drink outlets and a lively scene at the Royal Hotel.