Fiat Abarth 500 2015 Owner's Manual page 317

**Use only your Authorized Dealer recommended lug
nuts/bolts and clean or remove any dirt or oil before
tightening.
Inspect the wheel mounting surface prior to mounting
the tire and remove any corrosion or loose particles.
Wheel Mounting Surface
WHAT TO DO IN EMERGENCIES 315
Tighten the lug nuts/bolts in a star pattern until each
nut/bolt has been tightened twice.
Torque Patterns
After 25 miles (40 km) check the lug nut/bolt torque to be
sure that all the lug nuts/bolts are properly seated
against the wheel.
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