What is the size of BMW 5 Series tire bolts?

1 Answers
MartinMarie
07/29/25 8:48pm
BMW 5 Series tire bolts are 19mm in size. Introduction to tire bolts: Wheel hub bolts are high-strength bolts that connect the vehicle's wheels. The connection point is the wheel hub unit bearing! Generally, 10.9 grade bolts are used for mini vehicles, while 12.9 grade bolts are used for medium and large vehicles! The structure of wheel hub bolts usually consists of knurled splines and threaded sections, along with a cap head! T-head wheel hub bolts are mostly grade 8.8 or above, bearing the high torque connection between the car's wheel hub and axle! Double-ended wheel hub bolts are mostly grade 4.8 or above, bearing the lighter torque connection between the outer wheel hub shell and the tire. Function of tire bolts: Tire bolts refer to the bolts installed on the wheel hub that connect the wheel, brake disc, and wheel hub. Their function is to reliably connect the wheel, brake disc, and wheel hub together. As we know, the weight of the car is ultimately borne by the wheels, and the connection between the wheels and the car body is achieved through these bolts.
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