I once listened to a mechanic that spent 4 years in Germany at the Porsche school give a demonstration/speech on why you need to properly torque wheels. Keep in mind we're talking about a car that can maintain 175 mph +. So yeah, I understand the typical car with steel wheels that it's not critical. But I would use a torque wrench on any wheel other than a conventional steel wheel.
Oh, and on the subject of not getting a proper torque because of friction. Most of the Porsche lug nuts I've seen have a sleeve that turns where it hits the wheel, aiding in a better torque reading.
Oh, and on the subject of not getting a proper torque because of friction. Most of the Porsche lug nuts I've seen have a sleeve that turns where it hits the wheel, aiding in a better torque reading.