Specialized Bike Tires Best Tires for Mountain, Road & E Bikes Specialized Nimbus 2 Armadillo Reflect Cykeldk, 700x50C Store Velozophie Nimbus 2 Specialized Retail. The Specialized Nimbus 2 Sport tire features added puncture protection, an updated tread and compound that roll even faster, and more grip than ever before. It comes in many widths to accommodate different bikes, riding styles, and comfort levels, so it's the perfect choice for riding on any road or bike path. And with BlackBelt flat protection, you can have the peace of mind that you won't be plagued with flats. Type Road Size 700 x 32c Material Compound: 60a Casing: 60 TPI Bead Foldable Details Flat Protection: BlackBelt psi 75 100 Weight N A