If you’re replacing or servicing your disc brakes, you need lubricating grease. No ifs, ands, or buts, you need to lubricate the metal-on-metal parts that are meant to slide, otherwise, your calipers ...
If it isn't one thing, it's definitely another when it comes to modifying suspension, changing wheel offsets, etc. But, more often than not, there's always a fix for those "things." In this particular ...