Dunlop Direzza ZII Star Spec Tires

The Dunlop Direzza ZII Star Spec feature imageNo matter how great your car is, there are only four small places where it actually touches the ground. Without good tires, you have nothing. Tires are the number one priority when upgrading any vehicle.

One thing that many amateur racers and hobbyists are up against is the cost of new racing tires. Unfortunately, the only solution to having better tires is to get better tires.

Like most extreme performance summer tires, the Direzza model is directional. But unlike the BFG Rivals the inner and outer treads are both fair game. This means that if you have a camber challenged car (like my BRZ) you can run half the season eating up one side of the tread and then remount each tire to the opposite corner of the vehicle. This is a great solution for racing on a budget – its the next best thing to having two sets for the year.

The Dunlop Direzza ZII Star Spec tires have given me excellent traction this year. The difference between the factory Michelin Primacy HP tires is incredible!

Dunlop Direzza ZII Star Spec G-forcesThe Dunlop Direxxa ZII Star Specs are purpose-built to provide huge amounts of grip in dry or wet conditions. With these tires my 2013 BRZ is capable of reaching 1.2 Gs under a combination of braking and cornering forces. 

For reference, Edmunds found that a 2012 Nissan GT-R is capable of 1.02 Gs. (Read here)

I have found that the Dunlops are pretty shy, vocally – they don’t give a whole lot of audible warning when you’re about to exceed their traction capabilities. So you have to pay close attention when you’re looking for that sweet spot.

On the bright side, these tires seem to have a wide optimal slip angle. Once you reach peak grip there is a reasonable amount of room for error. This gives the Dunlops a forgiving characteristic when driven on the edge.

While all these factors add up to make a fantastic choice of tire, my favorite thing is how undeterred they are by changes to air pressure.

My data shows that setting the tires at the vehicle manufacture’s recommended pressures and leaving them for the day is the best practice. Even though the air pressure tends to climb 5-9 PSI during hard use, the shape of the tire remains unchanged.

I’ve confirmed this over the course of several race weekends by taking tire temperatures and air pressure readings after each run.

The Dunlop Direzza ZII Star Spec tires are very low maintenance. This allows you to simply focus on driving the car.

Clicking through the link above will take you to the Tire Rack eBay store front. If you decide to purchase these tires, please be aware that I will make a small commission. So I’d like to say, in advance, thank you for helping me build my brand. If you’d rather purchase them elsewhere, that’s okay too!

If you have any questions please email me directly at matt@howtobecomearacecardriver.com.

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