Tar road braking: A tyre’s braking ability is directly related to its physical grip. In other words, if a tyre has high grip levels it will achieve good braking distances. Although all-terrain tyres are used for dirt roads and off-road, most people still drive on tar more than 50% of the time. Three emergency stops were made at a speed of 100 km/h and the average of the three distances was calculated. Dirt road braking: With this we could determine how much grip a tyre has on a dirt road. We did three emergency stops at 70 km/h and an average was calculated. Climb test: Here we crawled a slope of between 30 and 40 degrees in first gear, low range. We started with all tyres on 1.5 bar and gradually increased to 2.2 bar. If a 2.2-bar tyre could climb without losing traction it would get full marks. Sidewall penetration test: With this we looked at how much resistance a tyre provides against a sharp object jabbed into the shoulder part of the sidewall. We punctured each tyre three times while it was pumped up at a pressure of 2.0 bars.