Abstract: A vehicle tire deflation device comprises a base, a plurality of hollow vehicle tire deflating quills removably secured to the base, and structure, including a curved portion and a flat portion, operably associated with the base, for positioning the device in a tire penetrating orientation so as to penetrate a tire of a vehicle as the tire rolls over the device, upon the device being positioned on a road surface adjacent the vehicle tire to be deflated in a non-tire penetrating orientation; such that the device rolls on the curved portion from the non tire penetrating orientation and comes to rest on the flat portion in the tire penetrating orientation. The device may include a member, operably associated with the base, for removably securing the quills to the base, such that a rolling vehicle tire which embeds one of the quills therein will cause the embedded quill to sever the member and separate from the base, the separated quill thereby remaining in the tire as the tire rolls over the base.