I'd suggest getting leavers (plastic coated) to take your tyre off your rim, this can be a challenge! Apart from this, remove the frame from your wheel set; Place tyre lever between tyre and rim and 'lever'; Get hold of lever and wiggle it round the rim to get one side of the tyre on the outer of the rim (2 levers at different intervals around the wheel can make this HEAPS easier!) Pull valve through hole in rim and out with the old tube; Feel around the inside of your tyre to see if you can feel anything sharp that maye have punctured your tyre (if it wasnt a pinch flat); Get new tube and place head of valve through rim hole; Feed the rest if the tube in and around the inside of the tyre; Push tyre back onto inside edge of rim; Pump up; Replace frame onto wheel set. Hope this helps. Peace J
