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.
What is the lug nut torque for a Shelby Series 1?+
The 1999 Shelby Series 1 lug nut torque is 100 ft-lbs (136 N·m). Tighten in a star pattern with a torque wrench, then re-check after the first 50–100 miles.
Do all Series 1 trims use the same lug nut torque?+
Yes. Every Series 1 trim in our database uses the same lug nut torque for a given model year.
What size tires come on the Shelby Series 1?+
Factory tire sizes include 265/40R18 (1999) and 315/40R18 (rear) (1999). Check the sidewall of your current tires to confirm yours, then compare prices for that size above.