I lost the stock wheel lock for my '93 base last weekend. Could someone please tell me what the deal is with these. Does each car have a distinct pattern? Or, was the pattern fairly common. My brother has a '94. What is the chance of his key fitting my car? I'm sure other's have lost this. What is the best thing to do? How much is a replacement from Mazda? If they are common, does anyone have a spare key for sale? Thanks.

 

Go to the dealer. There's a set of like 20 keys, figgure out the code for the one that fits and order it from the company listed on the key. Or if you just want the ******* off, weld a nut on there, or hammer a socket.
~Tom

 

You can always try a channel locks or a (cant remember the name) but they clamp tight.

 

I went through that last fall. I applied Liquid Wrench liberally on the area. I first tried pounding a 3/4" socket onto the locknut. Then I tried to back it off with a bar and then an impact wrench. The socket spun on the nut; the nut must have been impact-wreched on very tightly. People have gotten these off this way.

What I did next was to use my angle grinder with a diamond blade to cut a notch on the top edge of the locknut. (Be careful not to nick a wheel) Next, I took a sharpened large cold chisel and a 3 lb hammer and tapped on the notch until the locknut broke free. Then I used the 3/4" socket with the impact wrench to run the locknut off. The Liquid Wrench no doubt helped this process.

For similar problems where I wasn't worried about the finishes, I would alternatively heat and beat

 

Is this kind of kinky stuff permitted on this forum?!

 

I have heard of people hammering a socket on the nut. I dont know if that would be the best route, it might damage the wheel.