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[sblrog]

Hi all,

I took off my front brake discs to get them machined since they were warped. On each disc, there are (two) small countersunk screws that attach the brake disc to the wheel hub. The torque spec on the screws is 4 ft-lb. After a few days, I checked up on the screws and found that they had worked loose, even though I'm sure I had tightened them way tighter than 4 ft-lb (I didn't know the torque spec until after I was done). In addition, when I bought the car, there was only one screw left on each side, so I suspect the two missing screws worked themselves loose and were lost during the previous ownership.

My question is, what is the point of these screws? Wouldn't the wheel rim (and studs and lug nuts) hold the brake disc onto the hub anyway?

Thanks.