The ornamental design for a biketiremultitool, as shown and described.
FIG. 1 is a left side perspective view of a bike tire multi tool showing my/our new design;
FIG. 2 is a left side elevation view thereof;
FIG. 3 is a right side elevation view thereof;
FIG. 4 is a rear elevation view thereof;
FIG. 5 is a front elevation view thereof;
FIG. 6 is a top plan view thereof; and,
FIG. 7 is a bottom plan view thereof.
The broken lines are included for purposes of illustrating portions of the bike tire multi tool article embodying the design and form no part of the claimed design.