This just will not work for me using 0.6b. I have a mod installed for the XRG (supra) and no matter what, it will not change rims. I've done the same as everyone here about the file location and the pitting thing but it just will not switch rims. I tried the Z28 and 0.6b 5.0 versions. Is it my supra mod blocking it? Other trainers work, like the supra one that changes rim size/width. Even with a restart of LFS client and nothing else but rims manager, it won't do anything. No errors, no messages, just a ding, and nothing. I don't know what other info you may need to troubleshoot this, sorry.