The NTT IndyCar Series is exploring a transition from magnesium to aluminum wheels, potentially implementing the change in 2026 or 2027. This shift comes as magnesium, the traditional material of choice for its lightweight properties, becomes increasingly scarce for large-scale racing wheel production.

Current magnesium "aero" wheels feature a distinctive large lip on the front that helps manage airflow across the wheels and onto the car's rear. These wheels, while effective, are prone to age-related corrosion and are becoming harder to source.

Key points about the potential switch:

• O.Z. Racing, the primary wheel manufacturer, is in talks to produce aluminum alternatives
• New wheels would maintain the same dimensions as current magnesium units
• Weight matching is a priority in the new design
• Current magnesium wheels cost $1,650 each ($6,600 per set)
• Aluminum wheels could reduce costs by approximately $750 per set
• Teams typically maintain 10-12 sets per car (40-48 wheels) throughout the season

The transition to aluminum offers several advantages, including better material availability, reduced costs, and potentially improved durability while maintaining performance standards.

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