So I bought my gx from a buy here pay here lot so I knew it's history is dubious. I just pulled the wheels off to do the brakes and found what appears to be spacers. The nuts are nice and clean as if they are new. I watched 3 gx brake videos and no one had this . Looks like they are on the front as well. My rims look oem but I don't know. Why would these be on here? Can I just unscrew them and put them back on? I've never ran into this and don't want to mess anything up.