2025 Silverado Zr2 Tire Size. From this video, you take the new tire size and multiply it by the current gear ratio. 285/75r17 works out to just under a 34 tire.

Tire pressure monitoring system, auto learn includes tire fill alert (does not apply to spare tire) Chevrolet equips the 2025 silverado 2500 hd zr2 with a 305/70r18 tire.