Which pressure is used when popping beads in a tire service to seat the bead?

Which pressure is used when popping beads in a tire service to seat the bead?

• A. 15 psi
• B. 30 psi
• C. 25 psi
• D. 40 psi

Answer: (C)

Bead seating requires inflating the tire to a moderate pressure that is high enough to push the bead over the rim seat and create a seal, but not so high that it risks damaging the tire, bead, or rim. This mid-range pressure is chosen because it reliably seats the bead without over-stressing the components. If the pressure is too low, the bead won’t seat properly and you’ll have leaks. If it’s too high, you can risk damaging the bead or rim. So, the best choice is the middle, typical bead-seating range for standard passenger tires.

Bead seating requires inflating the tire to a moderate pressure that is high enough to push the bead over the rim seat and create a seal, but not so high that it risks damaging the tire, bead, or rim. This mid-range pressure is chosen because it reliably seats the bead without over-stressing the components. If the pressure is too low, the bead won’t seat properly and you’ll have leaks. If it’s too high, you can risk damaging the bead or rim. So, the best choice is the middle, typical bead-seating range for standard passenger tires.