A portable wheelchair is easily convertible between a conventional or street wheelchair and a specialty wheelchair through the use of conversion components, some of which are mounted permanently to the wheelchair and some of which are received by the mounted conversion components. In one form, the portable specialty wheelchair is a portable beach wheelchair while in another form the portable specialty wheelchair is an all-terrain wheelchair or trail chair. Preferably, but not necessarily, the portable convertible wheelchair is foldable in order to provide added versatility. In one form, the beach wheelchair includes right and left rear wheels having oversized, low pressure tires that replace the original rear wheels. Right and left front brackets are mounted to the existing frame and are configured to receive right and left wheel assemblies, having smaller, low pressure tires mounted for pivoting movement.
