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What's the largest tire size I can put on a 2024 Silverado Trail Boss without making modifications?

Bryan

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Apr 25, 2025
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Location
Stuttgart, AR
Current Ride
2024 Trail Boss 3.0 Duramax
It's time for new tires on my 2024 TB. The stock tires are 265/60/20. They look small on the truck. The TB comes stock with a 2" lift. How big can I go with tires without rubbing or any added modifications?

Thank you.
 
Mine came stock with 275/60/20 Dueler A/T which are isted as a 33". Chevy lists GY Territory MTs 265/60/20 as an option, which are a wee bit smaller (32.8). You can probably stuff a 35" class tire (with the right kind of narrow shoulder profile) with some minimal rubbing.
This article is for a ZR2, but mostly would apply: https://www.duramaxnews.com/post/tallest-tire-on-a-stock-silverado-1500-zr2-no-mods-fitment-guide - I don't know about any rim offset differences between the 18's and 20's stock though.
 
Mine came stock with 275/60/20 Dueler A/T which are isted as a 33". Chevy lists GY Territory MTs 265/60/20 as an option, which are a wee bit smaller (32.8). You can probably stuff a 35" class tire (with the right kind of narrow shoulder profile) with some minimal rubbing.
This article is for a ZR2, but mostly would apply: https://www.duramaxnews.com/post/tallest-tire-on-a-stock-silverado-1500-zr2-no-mods-fitment-guide - I don't know about any rim offset differences between the 18's and 20's stock though.
I appreciate you responding. Thank you.
 

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