BSD's Donnasqueak tyre is their best selling tyre, it's the Alex Donnachie signature built for grip and squeak. Alex Donnachie and BSD worked on the design of the tyre for a while and wanted to produce something with a simple, low profile tread and most importantly that mega squeak. The tyre features a smooth centre for low rolling resistance with tear resistant silkworm casing. Max pressure rating: 110 psi ###section### Product Specs WHEEL SIZE: 20" MAX PRESSURE: 110 PSI WEIGHT: 748g (26.4oz) PACK SIZE: Single Colour: Black with Tan Wall, Black, Gum, Green; Size: 2.25", 2.4"