NT01 D.O.T. Compliant Competition Road Course Tire Nitto Tire Nitto NT 01 Tires Buy Nitto NT01 Tires Online Tirebuyer 4 205 40ZR17 80W NT01 NITTO NT01 au PAY. The NT01 offers varying degrees of competition performance. The tire is molded at 6. 3 32nds of an inch with large continuous tread blocks and sweeping lateral grooves. This set up can be easily shaved down to 3 32nds of an inch tread depth to function as a race slick with twin circumferential grooves. When you're at the track, you want a tire that handles predictably and consistently. Nitto's engineers identified a combination of construction and compound features that reduces the negative effects of heat buildup. The high modulus rayon carcass, steel reinforced sidewall and body ply construction together give you the drive feel and confidence to push the tire to its limits. The construction design is enhanced for consistency and stability under racing conditions. The large shoulder blocks maximize the surface area contacting the road. This large contact patch increases dry performance while accelerating, braking and cornering. High modulus rayon carcass, reinforced sidewall and the advanced body construction combine to increase stability during braking, cornering and straight aways. The road race compound balances dry traction, consistency, heat cycle performance, heat resistance and longevity to provide fast and consistent lap times throughout the life of the tire. Dry Performance Consistency Competition Performance Handling Stability Specialized Race Compound