11/12/2023 0 Comments Images of m12x1.25 et tuner lugsYou instead have to first make sure the rotor plate holes line up with the holes on the hub, then lift the wheel assembly and hold it in place while you install the first couple lug bolts. Whatever the reason, it makes installing wheels harder since you simply can’t hang the wheel on the studs while you put on lug nuts. Nobody really knows why Germans use bolts instead of lugs but it may be that it’s cheaper than having to press studs into a rotor assembly during manufacturing or simply that it’s easier to replace broken lug bolt rather than a stud. They are threaded directly through the brake rotor hat and into the hub. Used mainly on German vehicles such as BMW, Mercedes, Audi, and Volkswagen, these are lug nuts with a stud/bolt attached. Respective replacement keys can easily be purchased by anyone form a local auto parts store or online. Keep in mind that the pattern on spline drive (and tuner style) lug nuts is not unique so don’t assume you can use either as a theft deterrent. They don’t have the same problem with possible corrosion. The difference is that instead of an opening in the middle, spline drive lug nuts have narrow grooves on the top and sides of the lug nut to accept the low profile key. Like tuner style lug nuts, this unique, small diameter lug has a conical seat and uses a special key. Because of this, tuner style lug nuts aren’t commonly used anymore and the spline drive style (below) is a much better alternative. This key is included when you purchase a set of tuner lug nuts but can also be purchased separately if the key is lost or your car didn’t come with one.īecause tuner style lug nuts are open in the center (to accept the tuning key), air and moisture can get to the studs and threads and cause corrosion. A normal socket then goes on top of the tuning key just like any other lug nut. To tighten or loosen these conical seat tuner lugs, a special tuning key is also needed which fits right over the lug. Standard acorn lugs will not fit so narrower tuner style lug nuts are needed. Many types of aftermarket wheels, especially for Hondas, Acuras, and other Asian tuner cars, are designed with smaller diameter holes for lug nuts. They are called mag seat lug nuts because at one time, they were made out of magnesium. It’s used in similar situations where a longer thread is necessary but instead of a conical, tapered bottom, they have a flat seat (sometimes with a washer, sometimes without). This is another type of extended thread lug, this time with a washer seat. The longer thread length allows for better engagement to keep the wheels more securely attached. This is helpful in cases where the length of wheel studs and mounting surface of wheels simply doesn’t allow enough thread engagement when using regular lug nuts. Similar to a standard conical lug nut, an extended thread (ET) lug nut add the benefit of a longer thread. Since the flat surface has more surface area than others, they are more prone to getting stuck and can be much harder to remove. If not centered perfectly, the stem can catch so it seems like the lug nut is tightened when it actually isn’t. The problem is that centering them can be very tricky since they have a small barrel that goes into the lughole. Out of all the different types of lug nuts, flat seated ones are probably the most frustrating and difficult to work with. #3 – Flat SeatĪs the name suggests, the seat is flat and resembles a washer. The heads look almost identical to conical lug nuts so it may be hard to see which is which if they are installed. While not quite as common as conical lugs, ball seat lug nuts can be found on certain Honda, Audi, and Volkswagen vehicles. Instead of being cone shaped, the seat on a ball lug nut is rounded or spherical. They are in most cases very easy to work with and center. These cone shaped lug nuts are designed to fit a cone shaped hole. The seat tapers inward at (usually) a 60 degree angle. #1 – Conical SeatĬonical lug nuts (aka: acorn lug nuts) are by far the most common lug nut type. Many of these you’ll rarely encounter outside of a busy commercial garage. Each of the eight different types have their own distinguishing features. There are actually a variety of different lug nuts and lug bolts out there. What Are the Most Common Lug Nut Sizes?.
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