A tire tool for facilitating the removal of a tire from a wheel rim having multiple radially spaced stud holes. The projectile’s casing encloses a chamber containing combustible material located opposite a roughened surface on the chamber. In this context, there is a risk of the bed temperature of the catalyst during and after regeneration being pushed into a range with incipient thermal desorption of the nitrogen oxides on account of the heat which is released during the conversion of the nitrogen oxides by the reducing constituents of the exhaust gas. Opposite the cam within the channel, a high friction surface aids garment retention.