Almost all BMW wheel bolts use metric. This means they usually measured in millimeters. For example, the most common metric thread sizes of BMW bolts are M14x1.25mm. A M14 means the width of the thread area and a 1.25mm means the thread pitch. Basically, the thread sizes of the lug bolts will vary based on the wheel hubs. Therefore, you need metric BMW lug bolts to fully secure the wheels. Then a set of M14x1.25mm wheel bolts fit your BMW car perfectly.

Since aftermarket wheels come with various lug seat types, the correct seat types will depend on the actual wheel. Stock BMW wheel bolts may no longer fit these new aftermarket rims. At this point, it is critical to figure out the different types of lug bolts. If the aftermarket alloy wheels have a R14 ball lug seat, the lug bolts should be ball type accordingly. This is helpful for you to make a wise decision about which variation is best for your particular requirement.

Does BMW Wheel Bolts Use SAE or Metric BONOSS Forged ISO Grade 12.9 Strong Extended Lug Bolts CHZ (2)

Where to Buy the Best BMW Wheel Bolts?

As a professional wheel bolt manufacturer, BONOSS provides a full line of BMW wheel bolts to fit aftermarket wheels and spacers, length from 27mm to 75mm. All of them are tested by SGS and TÜV standards: tensile strength≥1,282 MPa, ultimate tensile load≥152,000N, hardness (HV)≥395, NSS≥192H. Such BONOSS forged ISO grade 12.9 extended BMW wheel bolts won’t fail easily when facing road bumps and impact loads. They are perfect for your routine maintenance or wheel upgrades.

Changing to higher-grade BMW lug bolts is one of the easiest and quickest ways to upgrade wheel performance. Because ISO grade 12.9 wheel bolts are oftentimes stronger and more durable. Additionally, these BONOSS forged ISO grade 12.9 steel BMW wheel bolts are Electrocoating. This type of coating gives neutral salt spray resistances exceeding 192 hours. Moreover, it also behaves greatly to stand up to extreme environments such as water and sunlight. These BONOSS forged BMW extended wheel bolts are highly resistant to wear and damage.

BONOSS Forged Grade 12.9 Extended Wheel Bolts for Rims Aftermarket Tire Bolts Cai (1)