I have had my roadster for over 20,000 miles and have (obviously) replaced tires on it several times. This is the first time the tire shop told me they could not remove the lug bolts! Needless to say, they didn't want to force them and I didn't want to have a discussion about them breaking bolts off (I'd rather do it myself and have only me to blame) so I took the car home. I sprayed some penetrating oil on all of the bolts and went inside for about an hour. I came out and loosened all of them with no problem (halfway home!) I then jacked the car up, and removed the wheels on the one side, cleaned the hubs and put anti-seize on them and put them back. Added a little anti-seize to the bolts and tightened the left side up (75% done?) The right front was no problem and I was able to repeat what I did there (85%?) The right rear is my headache... I have been able to remove the bolts, but the wheel won't budge. I loosened the bolts (about half a turn) and went for a 1/4 mile drive (hoping start and stop driving would jiggle the wheel loose) and tried again. This time I was able to rotate the wheel just enough that I can't get the bolts back in :-( I have generously applied penetrating oil, hoping that some will find its way onto the hub, but so far no luck. Any suggestions?