Wheel and Tire Accessories

What is in this category

These parts support the wheels and tires: lug nuts and studs that hold them on, spacers and adapters that change offset or bolt pattern, center caps and valve stems that finish the look, covers that protect a rear-mounted spare, and chains for winter traction.

Lug nuts and studs

• Thread size: common examples are 12x1.5, 12x1.25, 14x1.5 and 1/2-20. It must match the vehicle's studs.
• Seat type: conical, ball or flat. The wheel and nut must use the same seat.
• Style: closed-end or open-end, and whether it needs a special key.

Studs need to match the hub and be long enough for full nut engagement. Tighten lug nuts with a torque wrench in a star pattern to the specification, and recheck after the first drive.

Spacers and adapters

Wheel spacers push the wheel outward, which changes the stance and can improve clearance over brakes or suspension. Adapters change the bolt pattern, for example from 5x4.5 to another pattern. Both are safety-sensitive parts. Look for hub-centric designs where possible, and use the correct studs or bolts. Sold-as-a-pair listings include one for each side of an axle. Wider tracks can alter steering feel and wheel bearing load, so get professional installation and check local rules.

Covers, caps and chains

• Spare tire covers protect the spare from sun and mud and often show a logo.
• Center caps and valve stems are mostly cosmetic or maintenance items, and should match your wheel series.
• Snow chains need to match tire size, and the pack lists which sizes it fits. Check vehicle clearance and local laws on chains.

Fitment checklist

Confirm bolt pattern, thread pitch, center bore, tire size and vehicle year, make and model. Factory and aftermarket wheels can differ even with the same bolt pattern. Always follow the vehicle manufacturer's torque and the accessory maker's instructions.

Inspection, pairing and mistakes

Inspect lug nuts and studs when rotating tires. Nuts with rounded seats, cracks or stripped threads should be replaced as a set, and studs that are bent or stretched should be replaced right away. Tighten the nuts again after the first 50 miles on any new wheel, spacer or adapter, since clamping surfaces settle after the first drive.

• Do not use oil or anti-seize on threads unless the maker says so, because it can change the effective torque.
• Do not use an impact wrench for final tightening.
• Do not mix seat types, such as a flat-seat nut on a conical wheel.
• Do not stack spacers on top of each other unless the maker approves it.

When matching parts, measure the center bore of the wheel against the hub. If the bore is larger than the hub, a hub-centric ring fills the gap and prevents vibration. Spacer thickness also affects how far the studs reach through the wheel, so check for full thread engagement. Spare tire covers should match the diameter and width of the spare, including any off-road tire, and need to fit over the mounting hardware.

Snow chains should be test fitted in dry conditions before you need them, and removed once the road is clear.