Product Description Specifications:Application:RoadProduct Line:RacingGround Conditions:asphaltType:tubularTechnical Information:Rubber Compound:Gum XCarcass:160 tpi, 2 layersModels:23-622 (28x23 mm) Dimensions:28 x 23 mmETRTO:23-622Air Pressure:6 - 12 barManufacturer Number:658168 25-622 (28x25 mm) Dimensions:28 x 25 mmETRTO:25-622Air Pressure:6 - 12 barManufacturer Number:735655Technology:Racing The series for professional competitions. Gum-X The Gum-X rubber compound offers the best compromise between grip, performance and wear. The harder middle section ensures good rolling characteristics and a long service life, the softer shoulders contribute the necessary grip in curves. Contents:1 x Weight: black | 28 | 23 mm | 23-622: 265 g black | 28 | 25 mm | 25-622: 280 g Manufacturer: Michelin Reifenwerke AG &Co. KGaA The Squaire 17 – Am Flughafen 60549 Frankfurt am Main Germany info@michelin.com