Photo courtesy Steve Turner Remember when we mentioned the fire extinguisher on display in front of the front tire at car shows? We’re not sure where this practice started (we suspect the AACA, but could find no evidence of such rule) but it is one we feel can cause problems. Displaying an extinguisher on the ground like this often leads to owners forgetting they are there and driving over them. At the least it ruptures and you’ve ruined your fire extinguisher. At the worst it breaks the valve off and 140 psi of pressure catapults the cylinder into the side of the car next to you. Our opinion: leave them in their mounting brackets.