The Grand Sport family is based on a solid 60 TPI casing, a NyTech breaker and a durable and super grippy Pure Grip tread compound. We have designed each tyre for a particular use. The Grand Sport Extra offer pure puncture protection. The doubled up NyTech breaker and three layer sidewall make it a reliable work horse, ideal for heavy training and tough racing conditions. The Grand Sport Race is designed as a balanced, all round tyre. The Nytech breaker and sufficient Pure Grip compound in the tread give confidence for effortless and countless racing and training kilo meters. The Grand Sport Light, in contrast, has been designed as a competitive tyre, the Â reduced Pure Grip compound saves weight, but at the cost of longevity. A good level of puncture protection is provided by the Nytech breaker. Weight: 280 grams.