M8CKN Posted March 15, 2017 Report Share Posted March 15, 2017 On many cars I've had I've noticed when they get heavily covered in brake dust you get a perfectly clean spot. Why is this? Not a particularly interesting post, but it's bugged me for ages! Link to comment Share on other sites More sharing options...
dazdot Posted March 15, 2017 Report Share Posted March 15, 2017 Isn't it some sort of marker, like the ones on a tyre? Link to comment Share on other sites More sharing options...
M8CKN Posted March 15, 2017 Author Report Share Posted March 15, 2017 There isn't any noticeable mark when they're (rarely) clean, but it's a good possibility. Link to comment Share on other sites More sharing options...
max_b Posted March 15, 2017 Report Share Posted March 15, 2017 (edited) I've only noticed this on alloys that have been refurbed at some stage, normally from when they hang the wheels during the process. Normally on the inside of the rim though not outside Edited March 15, 2017 by max_b Link to comment Share on other sites More sharing options...
M8CKN Posted March 15, 2017 Author Report Share Posted March 15, 2017 I've never had any refurbished so can't be that. Link to comment Share on other sites More sharing options...
cruiser647 Posted March 16, 2017 Report Share Posted March 16, 2017 I'd recommend a new tyre. That one looks a bit flat. Have all 4 of your wheels got that dot or just that one? Small magnet in the wheel for some sort of calibration? rotation speed, Link to comment Share on other sites More sharing options...
M8CKN Posted March 16, 2017 Author Report Share Posted March 16, 2017 Just that wheel has the dot. Tyre is fine too....what I've shown in these pictures is that my car needs a wash!! 1 Link to comment Share on other sites More sharing options...
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