If You Liked the Dunlop Direzza Sport Z1 Star Spec Then Check Out the New Dunlop Direzza ZII

The Dunlop Direzza Sport Z1 Star Spec has become a staple among autocross and performance enthusiasts. Many were disappointed to hear it had been discontinued. Dunlop has launched the newest version of their highly successful Extreme Performance Summer tire, the Direzza ZII. It's designed for enthusiasts who demand race tire-like traction for street use, autocross, drifting and track events.

Direzza ZII’s high-grip tread compound is molded into a directional design with a continuous center rib flanked by massive shoulders to form a highly rigid tread that delivers high levels of dry grip and handling while promoting uniform tire temperatures and even wear across the tread. Two wide circumferential center grooves channel water through the center of the tread design. Angled independent grooves help direct water to the sides of the footprint to enhance wet traction.

 Dunlop Direzza ZII
Dunlop Direzza ZII
 Dunlop Direzza ZII
Dunlop Direzza ZII

The Direzza ZII features Dunlop’s True Circle Profile to distribute tire deflection forces along the sidewall to provide more control by better communicating tire performance limits to the driver. Its internal structure includes JointLess Band (JLB) Technology that spirally winds polyamide cord over two wide steel belts to promote strength, uniform ride quality and high-speed capability.

During our time testing the tire, it proved to be a worthy replacement for the Direzza Sport Z1 Star Spec with significant lap time improvements in both the dry and wet when compared head-to-head. To read the full report, take a look at "Dunlop Direzza ZII Introductory Track Drive."


Friday, September 5, 2014 by TheSubaruGuru

Using 235/40 17 on supercharged 06 Miata (8" Kosei) and am surprised that all 4 tires have become very lumpy on the INSIDE third of tread, resulting in much noise, even though they have 2/3 tread remaining! As these are directional, can I remount them with lumpiness OUTSIDE...in hopes of flattening them a bit to get the remaining few months of the season, or will any resultant vibration (now that the lumpiness is on the outside) drive me nuts?!
PS Is the NEW Star Spec II coming later this year any better in this regard? I'm leary to try the Direzza II as it was so short-lived in the market. Must I go to BS RE-11?
Monday, September 8, 2014 by Tire Rack Team

Directional tires can be re-mounted to even out the wear on the tire, however I would not expect such an action to greatly reduce the tread noise you are experiencing if the tire has already worn so uneven. Regarding the tire choice, the Star Spec II appears to be one of the quickest tires on the market as seen in our initial testing. The RE-11 does have significantly better street manners and is much quieter due to the more reserved tread pattern. -Marshall@tirerack.com

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