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Is the gear ratio the same for the front and rear axles of a 4WD vehicle?

1 Answers

KinsleyAnn

07/25/25 9:08am

In theory, the gear ratio of the front and rear axles of a 4WD vehicle must be the same when driving straight and different when turning. Part-time 4WD: Part-time 4WD is the most common 4WD system. It is called part-time 4WD because it cannot be used on roads with good traction. Due to the lack of a center differential, the speed difference between the front and rear drive shafts during turning can only be offset by tire slippage. However, when the road has good traction, tire slippage becomes difficult. Full-time 4WD: Full-time 4WD adds a center differential on the basis of part-time 4WD, allowing the speed difference between the front and rear drive shafts to be smoothly resolved.

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