The present invention relates to a foldable wheelchair (10) comprising two side frame components (11a, 11b), respectively a left and a right side frame components, each mounting front and rear wheels (12a, 13a； 12b, 13b), respectively left and right, front and rear wheels, said rear wheels (13a, 13b) having an axis of rotation (XX'), said side frame components (11a, 11b) being connected together for relative folding movement between an erected position and a folded position by foldable link element (20) extending between said two side frame components (11a, 11b), wherein the left, respectively the right, side frame component (11a, 11b) comprises a T-shaped bracket (17), along which is connected both a rear wheel suspension (19) of the left, respectively the right, rear wheel (13a, 13b) and a left, respectively a right, end (21a, 22b) of the foldable link element (20), wherein the position of T-shaped bracket (17) is adjustable along the back-to-front direction of the wheelchair so as to permit the adjustment of the position of the center of gravity of the wheelchair.
