text: If its merely out of true and not kinked then you can fix it by adjusting the spoke tension. You can do this with small pliers, but it is better to use a special spoke tool. These tools are small and can be bought very cheaply, but first check if one of your existing bike spanners has a tiny square notch in one end - this is an integrated spoke tool and will work just fine.\n\nTurn your bike upside down and deflate the tyre on the affected wheel. Slowly rotate the wheel and watch how the rim runs between the brake blocks. As it begins to run close to one block mark the rim with a felt pen. Continue to rotate the rim until it has moved away from the block and mark it again.\n\nBetween your marks you need to adjust the spoke tension to true the wheel.\n\nSpokes entering the rim on the concave side of the warp need to be tightened and those entering on the convex side need to be loosened. Importantly make only small adjustments to each spoke and always adjust pairs of spokes (one loosened, one tightened). Rotate the wheel to check progress and keep repeating until the warp is removed.\n\nGood luck!