Why are tank road wheels staggered?

ie, on one side of the tank (like the m1A2) the road wheels (ones that are closest to the contact surface) are closer to the tanks drive sprocket, whi

ie, on one side of the tank (like the m1A2) the road wheels (ones that are closest to the contact surface) are closer to the tank's drive sprocket, while on the other side, the road wheels are farther from its side of the drive sprocket

or:ie, on one side of the tank (like the m1A2) the road wheels (ones that are closest to the contact surface) are closer to the tank's drive sprocket, while on the other side, the road wheels are farther from its side of the drive sprocket

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