Schwalbe big apple tyre k guardschwalbe's big apple tyre forged the comfort trend over a decade ago with a focus on complete comfort, durability, and protection. Nothing more, nothing less. The big apple tyre has natural built in suspension and is most noticeable when inflated to 30psi. At this tyre pressure the tyre will glide along with a suspension effect for superior comfort. A smooth roller, this big apple tyre has excellent road grip and durability, making this tyre perfect for the commuter or city cyclist.featuressupreme comfortexcellent grippuncture protectionexcellent rolling characteristicsdurablepressure 30 55psi 2.0 4.0 barmaximum load 140kgweight 810gtechnologiesk guard protection layer reinforced with kevlarreg fibres. The protection standard for every tyre from the active line.dynamo with dynamo ribbing.active line the basis for all active line tyres is the high quality 50 epi carcass. Schwalbe no longer produces tyres with a coarse 20 or 24 epi carcass. In addition, k guard provides effective puncture protection for active line tyres.balloonbikes air suspension built ine bike ready 25 in standard pedelecs that have motor assist up to 25 km h, there is no legal requirement for a special tyre. But even with these bikes, loads and average speeds are higher than in regular bikes, therefore we recommend only certain tyres as e bike ready 25 .buy schwable wheels tyres from chain reaction cycles, the world's largest online bike store.