Will these work on all my wheels?

M12 x 1.5 fits most common wheel stud patterns, but verify your vehicle's thread size before ordering. Extended length design accommodates deeper-seated aftermarket wheels — standard lug nuts may not work the same way.

Do I need to replace all four or five at once?

You get 20 nuts in this set, which covers a full set of wheels with spares. For a four-wheel vehicle, you'd use 16 (four per wheel) and have four extras. Five-lug wheels need five per corner.

How tight should I torque these?

Refer to your vehicle's service manual for the correct torque spec — it varies by make and model. Use a torque wrench to avoid under- or over-tightening, which can damage the stud or cause the wheel to come loose.