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2025 Chevrolet Silverado 2500 HD ZR2 — LT305/70R18

2025 Chevrolet Silverado 2500 HDLoading vehicle photo…
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2025 Chevrolet Silverado 2500 HD ZR2

Factory size
LT305/70R18
Load / speed
126/123R
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What size tires does the 2025 Chevrolet Silverado 2500 HD ZR2 take?

The factory tire size for the 2025 Chevrolet Silverado 2500 HD ZR2 is LT305/70R18.

The catalog lists it at load index 126/123, speed rating R (up to 106 mph).

Factory tire sizes and ratings
WheelsSizeLoad indexSpeed rating
All wheelsLT305/70R18126/123R

Confirm the size printed on the sidewall of your current tire or on the tire placard in the driver's door jamb before you buy. Replacement tires should meet or exceed the vehicle's load index and speed rating.

Chevrolet Silverado 2500 HD tire sizes for every year

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