Wheels & tires

Wheel hub

Provides the wheel’s centered, load-carrying attachment.

Where it sits

At each wheel carrier, supported by its bearing.

How it works

Its flange locates the wheel and brake disc while transmitting loads through the bearing.

Think of it as

The mounting center of a rotating platform.

Symptoms when it fails

Runout, corrosion or damage can cause fitment or vibration issues.

Lifespan

Inspect tread, age, pressure and damage rather than using appearance alone. Wheels and bearings are assessed for condition.

Repair cost

Inflation correction is small work; tire sets, forged wheels and damaged hubs can be much larger expenses.

The BMW angle

Clean, sound hub mating surfaces matter to BMW wheel and brake-disc alignment.

Used in

BMW models using the specified wheel and tire combination; approved sizes vary by vehicle.

Sources
Same system

Wheels & tires