Got on to to do the other wheel assembly today. previous end only one bolt came away, the others rounded. Ground the heads off, then ground hexagons on the remaining studs. Took AGES! Ruined a couple of sockets too
This time three bolts came off - hooray! ground the heads off the others then cut a groove up the middle of them with the angle grinder.
There's a big screw driver socket in one of my socket sets, so thought i would give that a go.
Worked a treat. Saved hours compared to grinding hex heads for sockets.
Tried mole grips. No chance. Guessing they'd not been off for 18yrs. Already had the new bolts ready to go in, so not bothered about grinding the heads off.