Lightweight commuting mountain bike tire

The invention discloses a light-weight commuting mountain bike tire which is provided with an outer surface, a plurality of V-shaped stripe groups are formed on the outer surface, the V-shaped stripe groups are arranged side by side in the rolling circumferential direction of the tire, and the V-shaped stripe groups extend towards tire shoulders far away from the center line of the tire and towards the two sides. The V-shaped stripe group comprises a plurality of anti-skid units, the plurality of anti-skid units are arranged in a V shape and are symmetrically distributed about the center line of the tire, and the V-shaped included angle of the V-shaped stripe group is 50-65 degrees. The first reinforcing parts and the second reinforcing parts are located in the extending direction of the V-shaped stripe groups and close to the tire shoulder, and the first reinforcing parts and the second reinforcing parts are sequentially and alternately arranged in the extending direction of the adjacent V-shaped stripe grou