TreadCompass

Mercedes-Benz 300SDL Lug Nut Torque

The Mercedes-Benz 300SDL lug nut torque is 80 ft-lbs (108 N·m) for 1986–1988 and 80 ft-lbs (108 N·m) for 1978–1984.

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Mercedes-Benz 300SDL · 1978–1988

The spec changed over the years. Pick your year above, or find it here:
1986–198880 ft-lbs · 108 N·m
1978–198480 ft-lbs · 108 N·m
  • ✓ Tighten in a star pattern, in two passes, with a torque wrench (not an impact gun)
  • ✓ Re-check the torque after the first 50–100 miles
  • ✓ Confirm against your owner’s manual; aftermarket wheels can differ

Source: TreadCompass vehicle fitment database. Page updated November 2026. Specs can vary with aftermarket wheels and lug hardware, so always confirm with your owner’s manual.

Factory tire sizes for the Mercedes-Benz 300SDL

Compare prices across retailers for your size.

195/70R141981–1984 · Compare prices →185/80R141978–1980 · Compare prices →205/65R151986–1988 · Compare prices →

Other Mercedes-Benz models

190D190E230SL240D250SL260E280280CE280E280S280SE280SLAll Mercedes-Benz models →

Mercedes-Benz 300SDL lug nut torque FAQ

What is the lug nut torque for a Mercedes-Benz 300SDL?

The Mercedes-Benz 300SDL lug nut torque is 80 ft-lbs (108 N·m) for 1986–1988 and 80 ft-lbs (108 N·m) for 1978–1984. Tighten in a star pattern with a torque wrench, then re-check after the first 50–100 miles.

Do all 300SDL trims use the same lug nut torque?

Yes. Every 300SDL trim in our database uses the same lug nut torque for a given model year.

Has the Mercedes-Benz 300SDL lug nut torque changed over the years?

Yes. It is 80 ft-lbs for 1986–1988 and 80 ft-lbs for 1978–1984. Pick your year above to see the exact spec.

What size tires come on the Mercedes-Benz 300SDL?

Factory tire sizes include 195/70R14 (1981–1984), 185/80R14 (1978–1980) and 205/65R15 (1986–1988). Check the sidewall of your current tires to confirm yours, then compare prices for that size above.

New to torquing wheels? See how to torque lug nuts and common questions.