Roll with 25x Schwalbe outer tire Marathon Plus in black with reflection. The size is 28 x 1.40, 37-622. This is Schwalbe's best-selling model. It is the most puncture-resistant pneumatic tire available. In addition to great puncture protection, it convinces with many internal values: 1 - Rolling resistance. The patented 5mm thick SmartGuard layer has a significant advantage over all imitation products in terms of rolling resistance. 2 - Recycling. Schwalbe now also uses a share of recycled rubber from old latex products at SmartGuard. 3 - 'Anti-Aging' side wall. This delays the typical overload due to low tire pressure significantly longer before cracks occur. 4 - E-Bike Ready. The Marathon Plus is the best choice for E-Bikes due to its excellent properties. You can never completely rule out a flat tire, but you are best protected against typical causes of a bad tire, such as shards or sharp stones, with the tires from the Marathon Plus series.