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What is the name of the thin, slotted cover that fits over the spindle-adjusting nut to secure the hub parts on an axle shaft in a hub and wheel bearing assembly?

• Hub locknut

• Nut lock

• Spindle nut

• Safety washer

Which tire construction method has plies running horizontally across from bead to bead, with stabilizer belts directly beneath the tread?

• Bias-ply tire

• Radial-ply tire

• Directional tire

• Tubeless tire

What is the patterned outer rubber surface of a tire that contacts the road called?

• A. Bead

• B. Tread

• C. Sidewall

• D. Liner

What is the term for the writing on a tire sidewall that gives information about tire size, model, load-carrying ability, and more?

What is a DOT code on a tire?

• Tire marking

• Tire label

• Tread wear rating

• Tire load index

Which system monitors tire pressure and alerts the driver if one or more tires are underinflated?

• Tire load index system

• Tire temperature resistance system

• Tire pressure monitoring system (TPMS)

• Tire traction system

What is a tubeless tire?

• A tire with an inner tube

• A tire manufactured without a separate inner tube to hold air pressure

• A tire with extra sidewall support

• A tire designed for hydroplaning prevention

What component is a threaded, spring-loaded valve that screws into a tire’s valve stem and permits air to be added or expelled from the tire?

• Valve core

• Valve stem

• Air chuck

• Tire gauge

What type of wheel is commonly constructed of aluminum or magnesium?

• Steel wheel

• Mag wheel

• Alloy wheel

• Spider wheel

What is the circular, rolled outer lip of a wheel that contacts the tire bead called?

• Rim

• Spider

• Hub

• Bead