I have the factory 4:10's and going to 37 inch tires. I had 33's and the gearing was good. What should I be expecting with these gears and tire sizes. Eventually when I upgrade the axles I plan on going to 5:13's or 5:38's. Does anyone run this gear ratio with this tire size. I am just wondering what it will be like on the trails. I would just put them on and see but I am still out of country until mid May so this is really got me thinking. Any help would be great.