There have been a few threads (or maybe posts in existing threads) regarding problems occurring when wheel bolts that were too long were used. It caused some damage to the wheel hub or a sensor or some such thing that unfortunately I cannot remember now. Anyway, my question is - does anyone know what is the maximum 'safe' length of bolt protruding into the wheel hub, measured from the wheel mating surface of the OEM brake rotor (i.e. how far the bolt sticks out from the back of the wheel or spacer (if so equipped) when the bolt is seated)?
The specific reason I am asking is that I have a set of wheel bolts that are 40mm shank length, which I used originally with OEM wheels and a 10mm spacer. That resulted in 3mm more protrusion into the hub than the stock setup which is a 27mm long shank with no spacer, and it was not a problem. Now I want to go with a 5mm spacer, meaning 5mm more protrusion into the hub if I were to use the same 40mm long bolts. The net result would be 8mm more protrusion into the hub than the stock configuration.
I know the "right" solution is to buy a set of 32mm long bolts to exactly offset the 5mm spacer, but before I spend more money on another set of bolts I'm wondering if it's even necessary.
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