Part of our UK Motorsport series. Start with the pillar guide: How to Get Into Motorsport in the UK.
GT racing looks like road car racing. Underneath, it is a very different world.
Two classes dominate the conversation: GT3 and GT4. Fans and newcomers mix them up all the time. Here is how they differ and why it matters.
What is GT racing?
GT stands for Grand Touring. The cars are based on production sports cars, then modified for the track. You will see familiar badges from Aston Martin, Porsche, McLaren, Ferrari and others.
That link to the showroom is part of the appeal. Fans recognise the cars.
GT3 in plain terms
GT3 is the higher class. These cars are faster and more complex.
- More power, usually, and more downforce.
- Advanced aerodynamics, with large wings and splitters.
- Driver aids such as traction control and ABS are allowed.
- Built to a global standard, so the same car can race in many series.
They are also expensive to buy, run and maintain. Teams need specialist engineers, and the bills reflect it.
GT4 in plain terms
GT4 is the step below. The cars stay closer to their road-going cousins.
- Less power and less downforce.
- Simpler technology and lower running costs.
- Often a more forgiving car to learn in.
- Racing is still close and fiercely competitive.
For many amateurs, GT4 is the sweet spot. You get real GT racing at a more manageable price.
Balance of Performance
Both classes use Balance of Performance, or BoP. Organisers adjust weight, power and other settings so that different cars can compete on equal terms.
It stops one manufacturer from dominating. It also means the best driver and team win, not just the best car on paper. Fans argue about it constantly. That is part of the fun.
Drivers and categories
GT racing often mixes professional and amateur drivers in the same car. Drivers are graded, typically from Bronze up to Platinum, based on experience and results. Series rules decide which combinations are allowed.
This pairing gives amateurs a place on the grid and gives sponsors a seat to fill. It is a big reason why GT racing welcomes business people.
Which class suits you?
- New to circuit racing? Learn in a simpler car first. Our guide to how to get into motorsport in the UK covers the route.
- Want to race at the front with a professional co-driver? GT3 may be the goal, at a higher budget.
- Want realistic costs and close racing? GT4 is the usual answer. See the cost of circuit racing in the UK.
Where to watch
British circuits host GT racing every season. Silverstone, Brands Hatch, Donington Park and Oulton Park are regular homes for it. Check our guide to the best car racing circuits in the UK.
Learn the flags first. They matter more than you expect. See motorsport flags explained.
Why GT racing matters here
GT cars sit at the meeting point of road and race. They are loud, spectacular and surprisingly accessible. Rachel Buscall has written about her own time behind the wheel in why she got behind the wheel and what driving GT cars has taught her.
