When dismounting a tire with a TPMS sensor,position the valve stem at 6:00 and 12:00 when the bead is broken at: a. 1:00 and 7:00 b. 3:00 and 6:00 c. 3:00 and 9:00 d. 6:00 and 9:00

## Step 1<br />This problem is about the correct positioning of the valve stem when dismounting a tire with a TPMS (Tire Pressure Monitoring System) sensor. The TPMS is a safety system that monitors tire pressure and alerts the driver when the pressure is too low. The positioning of the valve stem is important to ensure the safety of the tire and the vehicle.<br /><br />## Step 2<br />The valve stem should be positioned at 6:00 and 12:00 when the bead is broken at 3:00 and 9:00. This positioning is important because it allows the bead to be released from the rim, which is the next step in the tire removal process.<br /><br />## Step 3<br />The bead is the part of the tire that sits on the rim. When the bead is broken at 3:00 and 9:00, the valve stem should be positioned at 6:00 and 12:00 to allow the bead to be released from the rim.