I have been pulling alot here latley with my 00 ram 3500, I have enough motor, for now for what im doing, i can still drive it some on the road, and can still hook to the sled...... But I'm needing to do a gear set change, truck is a 5 speed, with 3:54 gears pulling with at the moment a 30" tall tire, next year I will have a 31" or 33" tire, I have talked to some many people and got some many diffrent answers on this topic, Which gears would be best for pulling????? I'm not worryied about mpg, I need some street abilty outta the truck, But I'm down to 4:88 or 5:13 gear............What do you guys think would be best????

 

4.88 would keep your wheel speed up and still be drivable on the road. with my 285 tires that measure 33" and 4.10 gears im turning around 2300 at 65 mph.

 

From my math which could be wrong, I think there is less than 3-5 mph diffrence in the 4:88 an 5:13.......