These screw-in wheel studs can be used on BMWs that use an M12 wheel bolt from the factory. These will work with up to 15mm hub-centric spacers, or no spacer at all.
This catalog entry is for A SINGLE WHEEL STUD ONLY.
Why use wheel studs instead of wheel bolts? Several reasons:
- Wheel studs are required by many racing bodies - because they are a better, safer way to ensure proper wheel engagement.
- Wheel studs are safer than wheel bolts because you can SEE when the stud is engaging the lug nut completely - a longer wheel stud sticks through the lug nut. A wheel bolt? Its a mystery... only way to know if is engaging the wheel hub completely is to remove it and count the threads when installing
- Wheel studs allow the use of a variety of hub-centric wheel spacers, or no spacers at all. Longer wheel bolts have to be tailor made to each wheel spacer width.
- Wheel studs stay engaged into the hub fur their entire life cycle. The repetitive installation and removal of wheel bolts can cause accelerated wear on the threaded holes on the (expensive replace) wheel hubs.
- Installing wheels using wheel studs is considerably easier than when using wheel bolts, as the studs will locate the wheel while the nuts are being fastened.
- Our Competition wheel studs have an unthreaded bull nose that acts as a "speed start", allowing faster lug nut installation and faster pit stops.
Lug nuts are sold separately.
Wheel stud installation kits are sold separately (Red Thread locker + Anti-Seize + 5.5mm Allen wrench).
The Vorshlag Competition Studs are black zinc phosphate plated for corrosion protection and long service life.
Specifics on the Vorshlag Competition 75mm Wheel Stud: - Material: 30MnB3
- Heat Treatment: Hardened and tempered to 10.9 class
- Tensile Strength: 150,000 psi
- Hardness HV: min 320, max 380
- Elongation after breakage: 9% min.
- Max Torque: 180Nm (132 lb-ft) - recommended torque on BMW apps using anti-seize is 80 lb-ft
- Coating: black zinc phosphate plating to 12 micron thickness, min.
- Available in two lengths: 75mm and 90 mm long.
- Ends have special "quick start" rounded nose with 10mm unthreaded section. Allows the quick starting of lug nuts onto studs.
- Broached female 5.5mm hex, for ease of installation (using 5.5mm or 7/32" Allen wrench, sold separately).
- Install using Red Threadlocker (Loctite 262 or equivalent) to secure the studs to the wheel hub.
- Studs are made with M12x1.5 threads. M12x1.5 Lug Nuts are also available in your choice of OEM black or chrome.
- Install studs into hubs with Loctite and torque until they bottom out onto the shoulder. Do not torque into hubs beyond 30 lb-ft. Torque lugs onto the studs with 80 lb-ft, using a light coating of anti-seize lubricant on the stud's threads.
- Made in the USA! Built to Vorshlag specifications by an American manufacturer that specializes in high end fasteners.
Note: READ AND FOLLOW INSTALLATION INSTRUCTIONS.
A full picture gallery with detailed installation instructions can also be found
here.