Core4 Motorsports Front Press-in Stud Conversion Hubs - M14 Studs BMW M3/M2/M4 F80/F82/F87

Weighing in well above 3000lbs and being propelled by the glorious and powerful S65 engine, there isn't a BMW chassis that benefits more from installing Core4's Ultimate Press-In Stud Conversion Hubs. The advantages are clear and one doesn't need to look further than the fact that every OEM who supplies hubs with studs from the factory use press-in studs.

"WHAT DO I GET?"

Your choice of a complete set, fronts of new O.E. supplier FAG brand BMW front and BMW Genuine OEM rear hubs professionally modified on a CNC machine to allow the use of super high-strength (beyond grade 12.9, 185,000+ psi ultimate tensile strength) press-in ARP or proprietary Core4/MSI wheel studs. Hubs come pre-installed with ARP or MSI studs.

These aren't just simply drilled. They are machined exactly the same as OEM hubs that come from the factory with press-in studs. The holes are precision machined and inspected, and the backside of the hubs are machined flat to allow the head of the studs to sit correctly without any stress risers from poor perpendicularity with the hub face.

It is perfect timing to simply install these on your vehicle during a bearing service and worry much less about your studs breaking whether for a dual duty track car or full blown race car. Hubs come with studs long enough to use a 12mm wheel spacer OR you can opt for a longer stud which will allow the use of a wheel spacer up to 20mm thick.

"WHO IS THIS MEANT FOR?"

Anyone who wants a endurance racing tested, reliable method of fastening wheels to their car, and keeping them there....literally. Extra peace of mind, less money spent on replacing studs out of paranoia, and a proven track record applies to every BMW enthusiast, whether drifting, tracking, or full blown racing. If it's good for endurance racing, it's good for ALL racing (and street!).

"WHY WOULD I WANT PRESS-IN STUDS ON MY BMW ANYWAY?"

This is a solution to a documented problem in a series that our race team competes in called American Endurance Racing ("AER" www.americanenduranceracing.com), where there's upwards of 25 hours of racing per weekend. That's approximately 15-20 HPDE/track-day's worth of track time in a span of three days. Several teams who have had consistent issues and multiple instances with breaking thread-in studs, and sometimes losing wheels on track (see videos in gallery), have had zero issues to date since switching over to press-in style studs.

This is based on the AER database which has cars with multiple 1000's of laps in the last 2-3 years. The only cars that have had failures (and lost wheels) are BMW cars with 12mm size thread-in studs. There hasn't been a single report of a press-in stud failure from cars that come that way from the factory (Mustang, Corvette, Nissan, Honda, etc.) or BMW's that have already been modified to this style utilizing ARP press-in studs that race in AER.

Because of the frequency of thread-in stud failures, many BMW owners have been led to believe that it is necessary to service wheel studs at an abnormal rate. Some recommendations as low as 10 hours of track time. STUDS SHOULD NOT NEED TO BE SERVICED BEFORE WHEEL BEARINGS ON A TRACK CAR . The only instance where this may be the case is when the studs are subjected to repeated time sensitive pit-stops with heavy impact equipment. Simple as that. A dual duty track/street car should be able to run the same high quality, high strength ARP or MSI wheel studs for years without worry or up until wheel bearings are serviced.

**CORE4 PROPRIETARY MSI STUDS NOW AVAILABLE AS AN OPTION** 

• More robust & reliable than thread-in studs: 14mm press-in studs have 44+% larger cross-sectional area at points of peak stress at the hub than thread-in studs and bolts
• Beyond grade 12.9 fastener strength (185,000+ psi tensile strength)
• MSI press-in wheel stud failures are extremely rare
• MSI studs come with proprietary dry film lubricant coating
• Quick start bullet nose on MSI studs
• Up to 12mm wheel spacer on shorter stud
• Up to 20mm wheel spacer on longer stud (No bullet nose on longer ARP)
• Service your studs when you service your wheel bearings
• MSI fasteners are MADE IN THE USA

LUG NUTS SOLD SEPERATELY

Fitment:

• F87 M2/M2 comp
• F80 M3
• F82/F83 M4