gear ratio's

[superih]

why do so many late 09's and 10's have 3.55 gears? Did the transmission ratio's change? I couldn't imagine hauling my gooseneck with 3.55's

 

[Jeff@Spartan]

Fuel economy.

 

[Twan]

They do really good loaded, I also have 37's on it. Don't think it helps mileage any. But they don't get very good anyways.