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Discussion Starter · #1 ·
I recently purchased a used 2011 Silverado 2500HD, already lifted with what looks like a ProComp 7" lift with 35x12.5x20 tires. I would like to eventually install 40" tires on the truck, so I would like to know how far up from stock do I need to go to fit 40s. I am guessing been 10 and 12 inches.
 

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What gears do you have to
 

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Your not gonna want 40s unless you go at least 4.88s
 

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5.13s would be perfect
 
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