Lug Nuts or Studs

You need lug nuts that match the curvature of the seats on the wheels and don't bottom out on the studs.  I think the Fuchs take ball (rounded bases?) while the steel wheels take acorn or tapered seats.  

My steel VW wheels have a spherical(ball) seat. 911 wheels, be they steel spares or Fuchs or cookie-cutters have a spherical seat also.

 

I bought open black steel nuts for a 911 on ebay and am using them on my Mangel wide5s. Of course 911s have 14mm studs so that needs to be addressed.

 

I also have 5 12mm lug bolts for my balance adapter and they have spherical seats as well.

 

If you look at the steel wheel closely, chances are you will be able to tell the seat is not flat, that it has a curve to it. What manufacturer in their right mind would want to supply 5 extra lug nuts for just the spare? Too complicated for most owners I would think.

       

       

Mercedes-Benz. Some of the mid 2000's model year cars that came with alloy wheels had steel wheel spares. The spare had 5 extra lugs that you HAD TO use with the steel spares. These lugs were shorter than those used for the thicker alloy wheels. If you used the longer lugs with the spare you would bottom out the lugs and not get the proper torque on the spare/wheel. If you decided to try and use the longer lugs anyway you would do considerable damage to your ebrake mechanism in the rear hub.

http://mbworld.org/forums/c-cl...are-steel-wheel.html

Sounds about right for MB. Ridiculously complicated but well thought out.

 

My ancestors were all from Germany, BTW.

Thanks for the replies, I think I'll pick up some open acorn nuts to mount them.

 

If I were to do this wheel/brake thing over I would not go the 5x130 route again. I like the looks of the Fuchs but the wheel choices after committing to 5x130 pattern gets slim.

There is no concern with that raised dimple for the lug nut seats. The center of the wheel is stamped sheet metal so is much thinner than the aluminum wheel. The dimple provides a stronger mounting surface for the lug nut than you would get if it was flat.

As mentioned just make sure you use the correct lug nut seat type.