Do these fit my factory wheels or do I need an extended thread pitch?

These are M12 x 1.5 — the standard pitch for most modern wheels. If your vehicle uses M12 x 1.25 or M12 x 2.0, these won't work. Double-check your factory manual or measure an existing lug nut before ordering.

Will I need new studs if I switch to these extended nuts?

The thread pitch stays the same, so your existing studs are fine. Extended length just means the nut sits further out — you're not changing stud diameter or pitch.

What torque spec should I use when installing?

Refer to your vehicle's service manual for the correct torque specification. Using too much or too little torque can damage the studs or wheels, so don't guess — look it up for your specific model.