OEM's are using taller rims and lower profile tires to improve handling and road feel. Untrained employees, improper procedures and the wrong equipment become the instant ticket to a service disaster. Higher horsepower and ABS brake systems are the trend. Improved acceleration and braking require the design of a tire with a tighter bead to prevent slippage on the rim.
Tighter beads help prevent recurring balance complaints.
This creates potential liability problems during inflation or with the vehicle after the service is completed. The manufacturer places extreme importance on customer satisfaction. Bead locks also prevent instant loss of air when a rim is bent at high speed, potentially saving lives. Bead lock type rims make it extremely tough to break the bead with a side mounted shovel. Damage to the inside and outside of rim and tire during bead breaking is almost certain.