A wheel provided with a centralizing unit, wherein the wheel is connectable to a vehicle, said wheel comprising a hub (38, 736) and a rim (4, 710), said centralizing unit comprising a suspension system with at least three support members (40, 740), wherein each one of said at least three support members comprises: an outer longitudinal element enclosing a lumen, comprising a top outer slot and a bottom outer slot; an inner longitudinal element slidable in said lumen, comprising a top inner slot and a bottom inner slot; a top sliding pin provided in said top outer slot and said top inner slot; a bottom sliding pin provided in said bottom outer slot and said bottom inner slot; a spring element connected at a top end thereof to said top sliding pin and at a bottom end thereof to said bottom sliding pin; wherein said slots (64, 66) are sized and arranged such that, at a central relative position between said outer longitudinal element and said inner longitudinal element, said top sliding pin and said bottom sliding pin are pushed by said spring element to a maximal distance; wherein at any non-central relative position between said outer longitudinal element and said inner longitudinal element, said top sliding pin and said bottom sliding pin are forced to approach each other to a distance smaller than said maximal distance, thereby compressing said spring element between said top and bottom sliding pins, wherein said spring element is preloaded so that its nominal length is smaller than a non-stressed length thereof; wherein said at least three support members (40, 740) are positioned between said hub (38, 736) and said rim (34, 710) thereby providing a normally fixed distance therebetween; wherein said at least three support members (40, 740) are adapted to retain said distance when stressed up to a threshold value and to recoverably alter said distance when stressed over said threshold value; wherein said at least three support members (40, 740) comprise said spring element (50, 750), configured to compress from a nominal length, if the support member (40, 740) compresses and if the support member (40, 740) elongates; and wherein said rim (34, 710) is connected to said hub (38, 736) by said at least three support members (40, 740), wherein an axle provided in said hub (38, 736) is surrounded by a bearing, characterized in that an inner ring of said bearing is fixed to said axle and an outer ring of said bearing is fixed to a connecting member having three arms, said arms are particularly arranged radially to said axle, and wherein said at least three support members are connected to outer end portions of said arms so that said at least three support members are not arranged in a radial manner in said wheel (10, 700). an outer longitudinal element enclosing a lumen, comprising a top outer slot and a bottom outer slot; an inner longitudinal element slidable in said lumen, comprising a top inner slot and a bottom inner slot; a top sliding pin provided in said top outer slot and said top inner slot; a bottom sliding pin provided in said bottom outer slot and said bottom inner slot; a spring element connected at a top end thereof to said top sliding pin and at a bottom end thereof to said bottom sliding pin; wherein said slots (64, 66) are sized and arranged such that, at a central relative position between said outer longitudinal element and said inner longitudinal element, said top sliding pin and said bottom sliding pin are pushed by said spring element to a maximal distance; wherein at any non-central relative position between said outer longitudinal element and said inner longitudinal element, said top sliding pin and said bottom sliding pin are forced to approach each other to a distance smaller than said maximal distance, thereby compressing said spring element between said top and bottom sliding pins, wherein said spring element is preloaded so that its nominal length is smaller than a non-stressed length thereof; wherein said at least three support members (40, 740) are positioned between said hub (38, 736) and said rim (34, 710) thereby providing a normally fixed distance therebetween; wherein said at least three support members (40, 740) are adapted to retain said distance when stressed up to a threshold value and to recoverably alter said distance when stressed over said threshold value; wherein said at least three support members (40, 740) comprise said spring element (50, 750), configured to compress from a nominal length, if the support member (40, 740) compresses and if the support member (40, 740) elongates; and wherein said rim (34, 710) is connected to said hub (38, 736) by said at least three support members (40, 740), wherein an axle provided in said hub (38, 736) is surrounded by a bearing, characterized in that an inner ring of said bearing is fixed to said axle and an outer ring of said bearing is fixed to a connecting member having three arms, said arms are particularly arranged radially to said axle, and wherein said at least three support members are connected to outer end portions of said arms so that said at least three support members are not arranged in a radial manner in said wheel (10, 700).