OZ Racing Superturismo Magnesio 18" Technical Review: The Ultimate Track Wheel

OZ Racing Superturismo Magnesio 18" Technical Review: The Ultimate Track Wheel

When it comes to extracting maximum performance on the racetrack, reducing unsprung mass is a top priority for motorsport engineers. Drawing from decades of dominance in the World Rally Championship (WRC), **OZ Racing** has engineered a super-technical solution for uncompromising drivers: the **Superturismo Magnesio**.

Part of the exclusive Magnesium Limited Edition lineup, this wheel bypasses traditional aluminum construction in favor of an advanced **Magnesium Alloy**. In this technical review, **JPM Automotive**, your trusted source for premium aftermarket car parts, dives into why the 18-inch Superturismo Magnesio is the ultimate upgrade for dedicated track enthusiasts.

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1. AZ 90 Magnesium Alloy & WRC Production Technology

The **Superturismo Magnesio** is manufactured using the exact same production philosophy employed for OZ's WRC racing wheels, utilizing the specialized **AZ 90 Magnesium alloy**.

* **Low-Pressure Casting & 5-Axis Milling:** The manufacturing process begins with the low-pressure casting of the magnesium alloy. Following a precise heat treatment phase, the wheel undergoes extensive secondary machining using 5-axis CNC mills. This hybrid process carves away excess material, resulting in a wheel that is incredibly light yet structurally robust enough to withstand immense motorsport loads.
* **Exclusive Track Use Designation:** OZ Racing classifies the Superturismo Magnesio as a "super-technical wheel." The manufacturer explicitly states that it is engineered exclusively for track use, ensuring it can handle the extreme temperatures and dynamic forces experienced during competitive racing.

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2. Unprecedented Unsprung Weight Reduction

The primary advantage of magnesium over traditional aluminum is its remarkable strength-to-weight ratio, allowing for drastic reductions in unsprung and rotational mass.

* **Ultra-Light 8.43 kg Mass:** In its 18-inch configuration, the Superturismo Magnesio achieves an astonishingly low weight of just 8.43 kg per wheel.
* **Transformative Vehicle Dynamics:** Shedding significant rotational mass translates to immediate improvements in handling geometry. The suspension can react faster to track surface changes, braking distances are minimized, and acceleration feels noticeably sharper. The steering input becomes highly responsive, offering unparalleled feedback to the driver.

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3. Iconic Multispoke Design & Specialized Fitment

Maintaining the signature Multispoke Racing Design of the Superturismo family, the Magnesio combines timeless motorsport aesthetics with functional load distribution.

* **Dedicated Applications:** OZ Racing specifically developed the 18-inch (width 9) variant for legendary all-wheel-drive performance cars. It offers precise, special applications for the **Toyota GR Yaris**, **Subaru Impreza WRX**, and **Mitsubishi Lancer Evo**.
* **Motorsport Finishes:** Available in colors that pay homage to their rallying roots, including Race Gold (for the WRX), Matt Black (for the Evo and GR Yaris), and Race White (for the GR Yaris).

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Who Is This Upgrade For?

* **Track Day & Motorsport Drivers:** Competitors who demand the absolute lightest unsprung weight to shave tenths of a second off their lap times.
* **GR Yaris, WRX, and Evo Owners:** Drivers building uncompromising track machines who require a direct-fit, specialized magnesium wheel setup.
* **Automotive Purists & Collectors:** Enthusiasts seeking a Limited Edition piece of engineering that shares genuine WRC heritage.

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Things to Consider

* **Strictly For Track Use:** As stipulated by OZ Racing, the Superturismo Magnesio is designed exclusively for track environments. It is not intended for daily driving on unpredictable public roads.
* **Magnesium Maintenance:** Magnesium wheels require careful handling and maintenance compared to standard alloys. Professional mounting utilizing touchless tire changers is mandatory to prevent scratches that could compromise the material.

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Conclusion

The **18-inch OZ Racing Superturismo Magnesio** is a masterclass in motorsport engineering. By combining the ultra-lightweight properties of AZ 90 Magnesium alloy with precision 5-axis CNC machining, OZ Racing has created an 8.43 kg weapon for the track.

If you are ready to equip your vehicle with the legendary **OZ Racing Superturismo Magnesio** or need expert advice on track-focused fitments, the specialists at **JPM Automotive** are here to assist you with professional guidance and support.