The hypoid, semi-floating rear axle assembly has a differential that permits the outer rear wheel to turn faster than the inner wheel while rounding corners. Through splining, the axleshafts can accommodate this speed variance with the differential side gears. Locking limited-slip rear axle is optional; such an axle acts as a conventional differential but contains multi-disc clutch packs that help in equalizing wheel rotation under low-traction conditions. A fully independent front axle assembly for the 4WD models consists of a differential and two driveaxles with inner and outer constant velocity (CV) joints. There are other causes which should be checked before thinking about axles: among them road noise, conditions of tires, or engine or transmission noise as they appear similar to axle problems . Thus, when it comes to performing any major overhaul on a differential, one may require special tools and this is not cost effective for do-it-yourselfers due to limitations in repairing procedures' scope-axleshaft-related tasks only like removing, installing, oil seal replacing, bearing replacing or removing of the whole unit for professional repair or replacement.