Industry formula:T = K × D × F with F = 75% of proof load. Torque wrenches are ±25% accurate at best — verify your specific bolt against OEM service data.
Recommended torque
Wheel / suspension range
ft-lb
88
Nm
119
in-lb
1056
M10 × 1.5 Class 8.8 dry: tighten to ~37 ft-lb (50 Nm). Use a 3/8" drive torque wrench. Allow ±25% wrench accuracy — final pass at full spec.
3/8" drive (15–80 ft-lb) — covers most engine accessories
Star pattern, two passes
Snug all lugs by hand in a star (cross) sequence — opposite to opposite.
Tighten to half-spec on the first pass — same star sequence.
Tighten to full spec on the second pass — same sequence.
Re-torque after the first 25–50 miles, especially on aluminum / mag wheels.
Reference values, not safety-of-life data. Torque wrenches are ±25% accurate at best (per Fastenal / SAE engineering convention). Industry T=K×D×F formula uses 75% of proof load as default clamp force. Always verify in your owner's manual or OEM service data, and use a star pattern on lug nuts (two passes — half-spec first, then final spec). Mike Reeves is an ASE Master Technician, not your dealership service writer.