Bridgestone
Supplemental technologies

	Tread pattern design which delivers optimum performance during forward rotation.	Helps expel water more rapidly, reducing the risk of aquaplaning ; allows tread pattern design to be optimised for maximum performance in both wet & dry conditions.
	Innovative reinforcing material in the tread compound, used wholly or partially as a substitute for carbon black.	Improves grip and roadholding, especially in wet or low temperature conditions. Silica also significantly reduces energy loss from the tread compound, thus reducing rolling resistance.
	A new shape and construction method for the bead coil. The bead coil is formed from a single wire by spiral winding, and has a diamond shaped cross-section as opposed to the conventional rectangular shape.	By significantly increasing the torsional or twisting stiffness of the bead coil, a more uniform contact patch is realised especially when cornering, improving handling and grip in all conditions. In addition, the mono-spiral construction gives improved uniformity to the tyre.
	Tread pattern grooves which travel from tread centre to shoulder at a high angle, usually replacing circumferential grooves.	More efficient water clearance to the side and rear, improving resistance to aquaplaning. Better contact pressure distribution improves wet and dry handling.
	Block edges are curved downwards towards the base of the grooves.	These curved tread block edges enable the tyre to displace water more smoothly and efficiently, resulting in improved wet braking and reduced risk of hydroplaning.
	An improved tread block design which varies the angle of the block edges in accordance with their size.	More even block stiffness means more uniform contact pressure as the tyre rotates, resulting in a smoother ride.
	Raised rubber ridge encircling the lower sidewall above the rim-fit line.	Provides protection against kerbing damage for both the tyre and the rim, also enhances tyre appearance.
	A spiral winding method of applying the nylon overlays which constrain the belt package under the tread.	Improved high speed handling, durability and uniformity.
	Narrow slots in the tread which increase in width as the tyre wears, due to their 'keyhole' shape.	Keyhole sipes help maintain wet performance as the tyre nears the end of its life.
	Specially designed soft rubber between tread rubber and belt.	Minimizes unpleasant shocks from the road surfaces and maintains a smooth ride comfort.
	Tread block elements are arranged to produce noise-canceling sound waves when the tire is in motion.	Because the sound waves created by the individual blocks constantly cancel each other out, the noise of the tire moving on the road surface is significantly reduced.
	Groove which increase in width as the tyre wears, due to its 'concave' shape.	A wider groove width maintains water drainage at advanced wear stage.
	Specially designed small flexible elements on the groove base.	Minimizes stone drilling and improve casing value. Avoid stone from penetrating to the belt and help to eject stones.
	Specially designed Z-shape sipe across the tread block.	Increase edge effect when worn without sacrificing the block stiffness for road holding.