2018 Kia Optima Axle Nut Torque Spec

Axle and hub nut torque values from our fastener database for the 2 axle and hub nut entries on the 2018 Kia Optima — including the Axle Nut Front (torques to 217 ft-lbs (294 Nm) — new nut; stake nut shoulder against spindle (SKF [77]), M24x1.5 thread). Confirm every value in your factory service manual before reassembly. The axle nut retains the CV axle in the hub and on many designs sets the wheel bearing preload, so the exact torque matters. Full bolt specs for the rest of the vehicle are linked below.

Front Axle / Hub Nut torque — 2018 Kia Optima

Our fastener database lists these front axle / hub nut values for the 2018 Kia Optima: Axle Nut Front (torques to 217 ft-lbs (294 Nm) — new nut; stake nut shoulder against spindle (SKF [77]), M24x1.5 thread). Axle nuts are safety-critical — staked and crimp-collar nuts are single-use on many models, so fit a new nut where the manufacturer requires it and verify the value against your factory service manual before reassembly.

Rear Axle / Hub Nut torque — 2018 Kia Optima

Our fastener database lists these rear axle / hub nut values for the 2018 Kia Optima: Axle Nut Rear (torques to 170-200 ft-lbs, M24x1.5 thread). Axle nuts are safety-critical — staked and crimp-collar nuts are single-use on many models, so fit a new nut where the manufacturer requires it and verify the value against your factory service manual before reassembly.

How to torque the Optima axle nut correctly

Remove the cotter pin or unstake the old nut with a punch before loosening — never zip a staked nut out through the stake. Break the nut loose with the wheel on the ground (or have a helper hold the brakes) using a breaker bar. On reassembly, seat the CV axle fully, thread the new nut by hand, and bring it to the final spec with a calibrated torque wrench — an impact gun overshoots the spec and can damage the wheel bearing. Stake the collar into the spindle groove (or fit a new cotter pin / cage) once torqued. An under-torqued axle nut lets the bearing run loose and fail; an over-torqued one destroys the bearing preload.

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