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A motorcycle support stand has a horizontally large base plate which stably engages a flat floor and mounts thereon a pair of sidewardly spaced uprights which define a gap therebetween for accommodating a motorcycle tire. The uprights have lower ends fixedly securable to the base plate, with at leas

A motorcycle support stand has a horizontally large base plate which stably engages a flat floor and mounts thereon a pair of sidewardly spaced uprights which define a gap therebetween for accommodating a motorcycle tire. The uprights have lower ends fixedly securable to the base plate, with at least one upright being slidably adjustable to vary the width of the gap. The upright has a leg part with a curvature similar to the rear tire so as to engage the side of the tire when the uprights are clamped together with the tire.

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1. A support stand adapted to be stationarily and stably supported on a generally horizontally extending support surface for supporting a tire of a motorcycle to maintain the motorcycle in a stationary upright position, said support stand comprising:a horizontally extending base member having a gene

1. A support stand adapted to be stationarily and stably supported on a generally horizontally extending support surface for supporting a tire of a motorcycle to maintain the motorcycle in a stationary upright position, said support stand comprising:a horizontally extending base member having a generally flat center contact area adapted to be engaged with the bottom side of a motorcycle tire, and also having a pair of horizontally extending leg parts which are joined to and project outwardly from opposite sides of the center contact area for providing stable and non-tipping supportive engagement with the support surface; a pair of tire-engaging uprights mounted adjacent opposite sides of said center contact area and projecting in cantilevered relationship upwardly from said base member so as to define a tire-accommodating space therebetween which opens both upwardly and forwardly relative to the support stand, each said upright having a lower flange which projects transversely and overlies the base member; a fastening structure cooperating between the uprights and the base member for permitting the uprights to be fixed with respect to the base member to define the tire-accommodating space between the uprights of predetermined width, said fastening structure permitting at least one of the uprights to be moved relative to the base either toward or away from the other upright to adjust the width of the tire-accommodating space; said fastening structure including a releasable fastening device which cooperates between the flange and the base member to permit each of the uprights to be transversely moved with respect to the base member to vary the width of the tire-accommodating space; and said base member having a pair of tire-retaining members fixed thereto and projecting upwardly a small distance from the upper surface adjacent front and rear sides of the center contact area to assist in retaining the tire therebetween; whereby when the tire is disposed within the tire-accommodating space the opposite side walls of the tire are substantially engaged with the uprights and the lower part of the tire is engaged with the center contact area of the base member so as to impose at least part of the weight of the motorcycle as applied to the tire directly onto the base member. 2. A support stand according to claim 1, wherein said flanges on said uprights project outwardly in opposite directions away from said center contact area.3. A support stand according to claim 2, wherein each said upright includes a flat platelike upright part which is cantilevered upwardly and which has a respective said flange defined by a generally platelike horizontal leg part which is rigidly joined to a lower end of said platelike upright part and projects transversely outwardly so as to directly overlie and contact an upper surface of said base member.4. A support stand adapted to be stationarily and stably supported on a generally horizontally extending support surface for supporting a tire of a motorcycle to maintain the motorcycle in a stationary upright position, said support stand comprising:a horizontally extending base member having a center contact area adapted to be engaged with the bottom side of a motorcycle tire, and also having a pair of horizontally extending leg parts which are joined to and project outwardly from opposite sides of the center contact area for providing stable and non-tipping supportive engagement with the support surface; a pair of tire-engaging uprights mounted adjacent opposite sides of said center contact area and projecting upwardly from said base member so as to define a tire-accommodating space therebetween which opens forwardly relative to the support stand; an adjusting structure cooperating with at least one of the uprights for permitting the width of the tire-accommodating space between the uprights to be adjusted to accommodate the width of the tire, the adjusting structure including a releasable fastening device which cooperates between said one upright and said base member to permit said one upright to be transversely moved with respect to the base member to vary the width of the tire-accommodating space; and said base member having a pair of tire-retaining members fixed thereto adjacent front and rear sides of said center contact area and projecting upwardly a small distance for assisting in retaining the tire therebetween; whereby when the tire is disposed within the tire-accommodating space the opposite side walls of the tire are sidewardly held between the uprights and the lower part of the tire is engaged with the center contact area of the base member so as to impose at least part of the weight of the motorcycle as applied to the tire directly onto the base member. 5. A free-standing support stand adapted to be stationarily and stably supported in a free-standing manner on a generally horizontally extending floor for supporting a tire of a motorcycle to maintain the motorcycle in a stationary upright position, said free-standing support stand comprising:a horizontally extending base member maintained in supportive but non-fixed engagement with a floor, said base member having a center contact area adapted to be directly engaged with a bottom side of a motorcycle tire and a pair of horizontally extending leg parts joined to and projecting outwardly from opposite sides of the center contact area for providing stable and non-tipping supportive engagement with the floor; a pair of tire engaging uprights mounted adjacent opposite sides of said center contact area and cantilevered upwardly from said base member to define a tire-accommodating space therebetween which opens forwardly relative to the support stand to enable a tire of the motorcycle to be rolled into the space for contact with the center contact area; said uprights having sidewardly spaced lower end portions fixedly positioned adjacent opposite sides of said center contact area so that a lower portion of the tire, where it engages said center contact area, is closely sidewardly confined between said lower end portions; said uprights also having sidewardly spaced upper end portions defining thereon opposed inner side surfaces for sidewardly engaging the tire therebetween at a location above the elevation of the rotational axis of the tire; an adjusting structure cooperating with at least one of the uprights for permitting the width of the tire-accommodating space between the uprights to be adjusted to accommodate the width of the tire; and each said upright being defined by a generally L-shaped platelike member having a vertical platelike part cantilevered upwardly and which at a lower end thereof is rigidly joined to a generally horizontal platelike part which overlies and engages the base member and is cantilevered away from the center contact area, the horizontal platelike part associated with said one upright being releasably fixed to said base member by said adjusting structure so as to be positionally adjusted sidewardly toward or away from said center contact area; the motorcycle tire being positionable within the tire-accommodating space with opposite side walls of the tire above the rotational axis thereof being sidewardly held between the upper end portions of the uprights and a lower part of the tire being engaged with the center contact area of the base member to impose at least that part of the weight of the motorcycle associated with said tire directly onto the base member. 6. A support stand according to claim 5, wherein front arid rear abutments are fixed to and project upwardly from said base member adjacent front and rear edges of said center contact area for retaining the tire therebetween.7. A combination including:a motorcyle having front and rear wheels each including a tire; and an upright support stand freely but stationarily and stably supported on a generally horizontal floor for supporting one said tire of said motorcycle so that the support stand, solely by itself, maintains the motorcycle in an upright position, said support stand comprising: a horizontally large platelike base member disposed on said floor, said base member having an upwardly facing center contact member for engaging a bottom surface of said one tire, the base member having wing parts which project horizontally outwardly through substantial distances in opposite directions away from opposite sides of said center contact area, the wing parts extending generally parallel to the rotational axis of said one tire to provide sideward anti-tip stability to the support stand; a pair of vertically elongate uprights positioned adjacent and engaging opposite sides of said one tire when the latter is supported vertically on said center contact area, said uprights having lower end portions fixed to said base member adjacent opposite sides of said center contact area and projecting upwardly therefrom in generally parallel and cantilevered relation to define a sideward space therebetween which generally corresponds to the width of said one tire, said space being opened on at least a front side to permit said one tire to be moved thereinto; and front and rear tire-retaining abutments fixed to and projecting upwardly from said base member adjacent front and rear sides of said center contact area; whereby said one tire of the motorcycle is engaged with the support stand so that the bottom surface of the tire is disposed directly on the center contact area and opposite sides of the tire are supportingly engaged with inner surfaces of the uprights for stably maintaining the motorcycle in a stationary upright position. 8. A combination according to claim 7, wherein a flexible tension strap extends transversely across said space and is joined to said pair of uprights adjacent upper ends thereof to restrict sideward separation between said uprights.9. A combination according to claim 7, wherein at least one said upright is movable relative to the base member to vary the width of the space between the uprights to accommodate a tire of different width, and a releasable fastener cooperating between the base member and the movable upright for creating a fixed securement therebetween.10. A combination according to claim 7, wherein said uprights adjacent upper ends thereof have opposed inner side surfaces disposed for engaging opposed side faces of said one tire at a location spaced vertically above and horizontally from the axis of rotation of said one tire.11. A combination according to claim 7, wherein each said upright is formed from a flat platelike member which is deformed into an L-shape having a vertical plate part projecting upwardly and a horizontal plate part which is joined to a lower end of the vertical plate part and is disposed in overlying engaged relationship with a top surface of the base member, the horizontal plate part being cantilevered outwardly away from the center contact area.12. A combination according to claim 7, wherein said upright has a generally U-shaped upwardly oriented configuration and includes rear and front vertically-elongated legs which project upwardly in spaced but generally coplanar relationship, said rear leg projecting upwardly through a significantly greater vertical extent than said front leg, whereby the rear and front legs sidewardly engage the side wall of the tire at respective upper rear and lower front quadrants thereof.13. A free-standing support stand adapted to be stationarily and stably supported in a free-standing manner on a generally horizontally extending floor for supporting a tire of a motorcycle to maintain the motorcycle in a stationary upright position, said free-standing support stand comprising:a horizontally extending base member maintained in supportive but non-fixed engagement with a floor, said base member having a center contact area adapted to be directly engaged with a bottom side of a motorcycle tire and a pair of horizontally extending leg parts joined to and projecting outwardly from opposite sides of the center contact area for providing stable and non-tipping supportive engagement with the floor; a pair of tire engaging uprights mounted adjacent opposite sides of said center contact area and cantilevered upwardly from said base member to define a tire-accommodating space therebetween which opens forwardly relative to the support stand to enable a tire of the motorcycle to be rolled into the space for contact with the center contact area; said uprights having sidewardly spaced lower end portions fixedly positioned adjacent opposite sides of said center contact area so that a lower portion of the tire, where it engages said center contact area, is closely sidewardly confined between said lower end portions; said uprights also having sidewardly spaced upper end portions defining thereon opposed inner side surfaces for sidewardly engaging the tire therebetween at a location above the elevation of the rotational axis of the tire; each said upright having an arcuate shape as it projects upwardly from said center contact area, the arcuate shape of the upright extending through an angular extent in excess of 90° and substantially corresponding to the arcuate shape defined by a side of the tire to facilitate engagement with opposite sides of the tire; and an adjusting structure cooperating with at least one of the uprights for permitting the width of the tire-accommodating space between the uprights to be adjusted to accommodate the width of the tire; the motorcycle tire being positionable within the tire-accommodating space with opposite side walls of the tire above the rotational axis thereof being sidewardly held between the upper end portions of the uprights and a lower part of the tire being engaged with the center contact area of the base member to impose at least that part of the weight of the motorcycle associated with said tire directly onto the base member. 14. A free-standing support stand adapted to be stationarily and stably supported in a free-standing manner on a generally horizontally extending floor for supporting a tire of a motorcycle to maintain the motorcycle in a stationary upright position, said free-standing support stand comprising:a horizontally extending base member maintained in supportive but non-fixed engagement with a floor, said base member having a center contact area adapted to be directly engaged with a bottom side of a motorcycle tire and a pair of horizontally extending leg parts joined to and projecting outwardly from opposite sides of the center contact area for providing stable and non-tipping supportive engagement with the floor; a pair of tire engaging uprights mounted adjacent opposite sides of said center contact area and cantilevered upwardly from said base member to define a tire-accommodating space therebetween which opens forwardly relative to the support stand to enable a tire of the motorcycle to be rolled into the space for contact with the center contact area; said uprights having sidewardly spaced lower end portions fixedly positioned adjacent opposite sides of said center contact area so that a lower portion of the tire, where it engages said center contact area, is closely sidewardly confined between said lower end portions; said uprights also having sidewardly spaced upper end portions defining thereon opposed inner side surfaces for sidewardly engaging the tire therebetween at a location above the elevation of the rotational axis of the tire; an adjusting structure cooperating with at least one of the uprights for permitting the width of the tire-accommodating space between the uprights to be adjusted to accommodate the width of the tire; and a releasable flexible securing strap transversely joined between said pair of uprights adjacent the upper ends thereof for restricting sideward separation between the uprights; the motorcycle tire being positionable within the tire-accommodating space with opposite side walls of the tire above the rotational axis thereof being sidewardly held between the upper end portions of the uprights and a lower part of the tire being engaged with the center contact area of the base member to impose at least that part of the weight of the motorcycle associated with said tire directly onto the base member. 15. A free-standing support stand adapted to be stationarily and stably supported in a free-standing manner on a generally horizontally extending floor for supporting a tire of a motorcycle to maintain the motorcycle in a stationary upright position, said free-standing support stand comprising:a horizontally extending base member maintained in supportive but non-fixed engagement with a floor, said base member having a center contact area adapted to be directly engaged with a bottom side of a motorcycle tire and a pair of horizontally extending leg parts joined to and projecting outwardly from opposite sides of the center contact area for providing stable and non-tipping supportive engagement with the floor; a pair of tire engaging uprights mounted adjacent opposite sides of said center contact area and cantilevered upwardly from said base member to define a tire-accommodating space therebetween which opens forwardly relative to the support stand to enable a tire of the motorcycle to be rolled into the space for contact with the center contact area; said uprights having sidewardly spaced lower end portions fixedly positioned adjacent opposite sides of said center contact area so that a lower portion of the tire, where it engages said center contact area, is closely sidewardly confined between said lower end portions; said uprights also having sidewardly spaced upper end portions defining thereon opposed inner side surfaces for sidewardly engaging the tire therebetween at a location above the elevation of the rotational axis of the tire; said upright having a generally u-shaped upwardly oriented configuration and including rear and front vertically-elongated legs which project upwardly in spaced but generally coplanar relationship, said rear leg projecting upwardly through a significantly greater vertical extent than said front leg, whereby the rear and front legs sidewardly engage the side wall of the tire at respective upper rear and lower front quadrants thereof; and an adjusting structure cooperating with at least one of the uprights for permitting the width of the tire-accommodating space between the uprights to be adjusted to accommodate the width of the tire; the motorcycle tire being positionable within the tire-accommodating space with opposite side walls of the tire above the rotational axis thereof being sidewardly held between the upper end portions of the uprights and a lower part of the tire being engaged with the center contact area of the base member to impose at least that part of the weight of the motorcycle associated with said tire directly onto the base member.