TreadCompass

Plymouth Roadrunner Lug Nut Torque

The 1968–1970 Plymouth Roadrunner lug nut torque is 90 ft-lbs (122 N·m).

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Plymouth Roadrunner · 1968–1970

Lug nut torque
90ft-lbs122 N·m
Same spec for every year 1968–1970.
  • ✓ 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 Plymouth Roadrunner

Compare prices across retailers for your size.

215/70R141968–1970 · Compare prices →

Other Plymouth models

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Plymouth Roadrunner lug nut torque FAQ

What is the lug nut torque for a Plymouth Roadrunner?

The 1968–1970 Plymouth Roadrunner lug nut torque is 90 ft-lbs (122 N·m). Tighten in a star pattern with a torque wrench, then re-check after the first 50–100 miles.

Do all Roadrunner trims use the same lug nut torque?

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

Has the Plymouth Roadrunner lug nut torque changed over the years?

No. It has been 90 ft-lbs (122 N·m) for every model year we have, 1968–1970.

What size tires come on the Plymouth Roadrunner?

Factory tire sizes include 215/70R14 (1968–1970). 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.