20 Tyre park = 5 flat & 15 buried. Get a FREE Tyre Tunnel when you order our 20 Tyre Park. Our extremely popular Tyre Parks are fantastic value, safe and low maintenance. Using only brand-new large truck tyres, your new Tyre Park can be installed into any existing grass area. It can also be installed into a hard-standing play area with one of our safety surface products. Standing tyres are dug into the ground and flat tyres are installed with our brightly coloured FUNKY GRASS TOPS. Tyre Park Classroom Design Pack supplied upon request.