BMX and dirt jump tyres must be able to take serious punishment. Very few riders pull off every landing on the first try, and some tricks are very tough on materials, even when perfectly executed. So they can handle the stresses of these styles of biking, these tyres are equipped with particularly tough carcasses. The tread pattern is generally less pronounced than on comparably-robust MTB downhill tyres. After all, these agile little bikes are mostly used in the city, on the compact soil of pump tracks or the skate park with its artificial obstacles. A relatively round cross-section and high air pressure mean even rolling behaviour and facilitate tricks and jumps.