Gear ratio

[Stomper5174]

Hello everyone. I just joined the site. Looking for a good gear ratio for my 2011 Chevy Silverado 1500. Went to a gear ratio calculator to find the best one. Imputed my info (stock tires 265/65R18, new tires 37/12.5R20 and current gear ratio 3.42). It says my new gear ratio should be 4.01. Before using the calculator I was thinking about going with 4.56 or 4.88 gears. Any input would be greatly appreciated. 

[Darksky]

4.10 or 4.56 if you’re mostly highway go 4.10 if you split between highway and city 4.56. You’ll be amazed post swap. It will seem like a different truck. Please keep us posted.

[Stomper5174]

4.56 was what I was leaning towards the most to get rid of the sluggishness that the big tires caused. Thanks for your input Darksky. I'll repost how it goes when it's finished.