Check with a good tire shop in your area. There are special tools made to remove these aftermarket locking nuts when the "key" socket goes missing. You will need the proper lugs to replace these which you can get from our good friend Ricambi.
you might be able to get in there with something like a Torx 100!! alternatively many years ago it was posable to buy a socket that was full of spring loaded pins, with the idea that once pushed over the irregular bolt head, would conform to the shape allowing the socket to turn the bolt/nut. I thing it was called "gator grip" or something! However I seem to remember it when over the nut, not in it! Good luck wight the tyre shop, just don't leave it with them, I've seen hammers and chisels used before!!!...ouch!
Spend half a day going from shop to shop trying to find a 7 points reverse spline socket. It seems no one has it or know where to get one. Looks like I need to find a metal fab shop and have them make one.
Might want to see if you can get a large hex wrench that will fit snug in there, metric or standard might bite in hard enough. Even if you have to grind the wrench in a couple spots using a larger one. Just an idea, and cheap.
Looking on YouTube, there are some pretty basic techniques for removing these. e.g. bashing an undersized (quality) 12 point deep socket on the outside of the wheel nut with a hammer. https://www.youtube.com/watch?v=R6-frJjNhqk There are special sockets for use with nuts with damaged surfaces, which operate on a similar principle to the above technique, but I don't know if they work with completely round surfaces. Google Irwin Bolt Grip. These types are re-useable I think the Gator Grip type is only for those nuts with the flats on the outside of the nut.
I suggest you take a look at this site. I don't see what you need but if you send them a close up photo they may recognize what it is and point you in the proper direction. Internal
That would be it. And based on the photos, the OPs caps are missing as well. . Image Unavailable, Please Login
good sniffing around John. That's the one. I have all the caps. I only need the key. Guess I'll have to purchase the kit.
Knew what it was as soon as I saw it. Here they are a little cheaper from Ferrari of San Francisco Genuine Ferrari Anti Theft Studs Wheel Lock Kit 70004563 | eBay
No use buying another kit because each set has a different key. The spacing of the splines is different so it won't go into your bolts. Get a slightly bigger Allen bit, round it to the inner diameter of your bolts, push a lump of plasticine into the bolt to get impression of the splines then cut grooves into the bit.
Roth, I'd check with a dealer about this. If, as it appears, you have 5 antitheft lugs on each wheel, you must have 5 sets since they come in sets of 4. First check would be to see if all you lugs have the same spline pattern. Even if they do, it could be that there are some number of different keys and you would need a 6 th set with a key that matches your lugs. I'm sure that if there are different keys, there are a limited number of them.
Thanks for the input guys. I did an intimate visual inspection. All 20 lugs appear to be the same. 7 spline equally spaced. I can't imagine every set is unique. That's stretching too far even for Ferrari standard. In any case, it's too late I purchased a set on EBay for the key. The set on EBay looks exactly the same as the ones on the car.
Old sleuth John Wow nice find now he dies not need new bolts. You actually saved him some money. Awesome
Your lugs may not be real anti-theft type but just having an odd 7-spline key which is not easily available. The anti-theft sets almost always give you just 4 bolts (one per wheel) and they come with a special key with unequally spaced splines. Each set has a different key. The one on Ebay has 7 splines but their widths (spacing) appear to be different. Anyhow, you can use it later (after you've remove the present bolts) with original bolts. Image Unavailable, Please Login
Since these are a factory part rather than aftermarket you should check with a Ferrari dealer to see if they have a set of "master key" sockets. I had a tire dealer destroy my removal socket for my Boxster that came with factory locks. The dealer had a set of master sockets, (there were 29 combinations that needed to be matched) that had specific part numbers and they were able to order a replacement socket. Cost was something like $30 and an interesting sidebar was the security protocol the dealer had to go through with Porsche hdq. in Atlanta to get the part shipped.
I contacted Ferrari of San Francisco about the key issue. My question: "I have a car which has these anti-theft studs. I can not find the key. If I purchase a new set will the new key fit my present studs? That is, are the keys unique to each set of studs or do all sets of studs use the same key?" Their response: "The key that comes with this lock set will not fit your lock set." No other comment as to if they could help out. I guess that sucks. Still perplexed if all 20 bolts on your cars are the same. Seems contrary to what has been communicated to me.
A suggestion for making a key. But a wooden dowel just the same size as the hole in the lugs. Hammer it into the lug which will mark the splines. Then get a short piece of solid steel rod of similar diameter and grind notched in it for the splines matching the impressions made on the dowel. Weld a nut to the end.
McGard wheel lock is right down the street from my business and I've done business with them and have friends there. They have a walk in CS department to sell missing keys to folks as they get lost all the time. They also don't have as many patterns as one would think. As I and others pointed out, I would suspect a dealer service department to have masters.
We use this stuff in my business to make internal impressions - works great buy it's not cheap: https://www.kerrdental.com/kerr-restoratives/extrude-impression-materials
