Abstract: A multiple use vehicle tire deflation device comprises a base, at least one cartridge removably secured to the base, and at least one vehicle tire deflating quill removably secured to the cartridge. The base, cartridge and quill are configured such that the quill, when imbedded by a vehicle tire rolling over the device, separates from the cartridge, whereas the cartridge remains secured to the base yet is readily removably replaceable. A replacement cartridge for a vehicle tire deflation device, which device includes a base, comprises a block, at least one tire deflating quill removably secured to the block, and structure on the block adapted to cooperate with the base of the tire deflation device to facilitate installation and removal of the block onto and from the base and to prevent the block from separating from the base when the quill becomes embedded in a vehicle tire rolling over the device.

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.