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Originally Posted by Bernard333
Reading this thread has convinced me that McGards claims about security are exaggerated . McGard claim that the computer generated lock pattern can have an infinite number of variants , thats probably true inside the computer but anyone in engineering knows that working to tolerances plus or minus is what happens in the real world so it would not be that suprising if say 30 different 'master keys' covered 99% of nuts ? It would be interesting to know how many keys make a 'set' because that would give us a clue to just how insecure the system really is . From the 'master' set you will probably find a key that fits , its not going to be the correct key according to the original computer generated pattern dimensions or have the exact correct profile but it will fit the nut and be near enough to get it off . Problem is if the dealer then orders a new key based on the key number used unless they are very lucky its not going to have exactly the right profile and will put undue stress on the key and nut so how long will this key last especially when used to remove a seized nut which is common when a wheel has not been removed for a long period . The 'master set' solution solves your short term problem but blows a hole in McGards claims about security . Its a good way to get the McGard nuts off when you lose a key but probably better leaving them off and replacing them with normal nuts , thats whats been done on my 2001 V70 .
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your better off without them and McGard are one of the worst designs on the market.the key is to easily damaged and the nuts are a pig to remove without it.
peter.