well-base rim

A wheel rim with a central channel or recess into which one side of the tire bead can drop; the other side can then be forced over the rim for fitting or removal. Wheels with well-base rims are commonly used on passenger cars because they enable easy installation and removal of the tire; the seats of the rim on which the tire sits (rim flanges) have a 5° taper so that, as the tire is inflated, the beads are forced up the taper to give a wedge fit and a good seal for tubeless tires; safety bead seats must also be incorporated, however

Dictionary of automotive terms. 2015.

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  • well base — See rim well base …   Dictionary of automotive terms

  • rim well base — The portion of the rim with a substantially smaller diameter than the bead seats and located with sufficient depth and width to enable the tire beads to be forced over the mounting side of the rim flange and bead seat taper for installation or… …   Dictionary of automotive terms

  • rim — [1] The outer edge of a dented area in a body panel that is heat shrunk towards the center of the dent. [2] On a bicycle, the metal or wooden hoop of a wheel that holds the tire and tube and the outer ends of the spokes. [3] On a truck, the metal …   Dictionary of automotive terms

  • base — [1] The lowest supporting part of an upright member. [2] The bottom layer or coating in a series of paint coats. [3] The major ingredient, other than pigments and filler, that make up the non volatile portion of an adhesive, coating, or sealing… …   Dictionary of automotive terms

  • rim bead seat taper — The narrowing of the rim width towards the rim well. The taper must be designed to lock the tire to the rim and provide a good seal; well base rims for passenger cars have a 5° taper, those for commercial vehicles have a 15° taper; flat base rims …   Dictionary of automotive terms

  • well — See door well rim well rim well base seat well spare wheel well wheel well …   Dictionary of automotive terms

  • Rim (firearms) — A rim is an external flange that is machined, cast, molded, stamped or pressed around the bottom of a firearms cartridge. The rim may serve a number of purposes, the most common being as place for the extractor to engage. Nearly all modern… …   Wikipedia

  • Rim (wheel) — The rim is the outer circular design of the metal on which the inside edge of the tire is mounted on vehicles such as automobiles. [ [http://www.motorera.com/dictionary/RI.HTM#Rim Rim as defined by the Dictionary of Automobile Terms, undated] ,… …   Wikipedia

  • drop center rim — A one piece rim with a deep center section which is lower than the two outer edges, this allows the bead of the tire to be pushed into the low area on one side while the other side is pulled over and off the flange. The British term is well base… …   Dictionary of automotive terms

  • Travis Air Force Base — Infobox Airport name = Travis Air Force Base nativename = Part of Air Mobility Command (AMC) image width = 300 caption = 12 June 1993 image2 width = 150 caption2 = FAA airport diagram IATA = SUU ICAO = KSUU FAA = SUU type = Military: Air Force… …   Wikipedia

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