I reckon you can hammer a small deep socket on the centre but not sure it'll grip enough. Irwin bolt extractors weight be worth a try.
Doesn't look like there is space to hammer a socket on those. Had a similar problem n my local garage got them off by welding nuts to them n then spinning them off. Cost me £20 I think.
yeah those type you can either weld a nut on, or it's worth trying a few local tyre places and see if they have a key that'll fit as some keep a selection handy because of the nature of their work, and these are quite a common type of locking nut.
Also, get some standard nuts to replace them afterwards. Honestly my biggest hate has to be locking nuts, who steals alloys these days?
plenty of area to smash a sacrificial 12 point socket onto that type of bolt, do the other 3 up to torque will help also.
smashy smashy!! 9/16 rings a bell.
I have also managed to drill the heads off locking wheel bolts.
Angle of the picture made it look tight but definitely trust your judgement on that!
smash a socket over the end, when that doesnt work trying to get it out will be a pain.... after that youll be onto the welding a nut on trick which you should probably try first anyway.... then after that drilling them out... yay.
ive made a point now never to do lockers up that tight. All happened after my locker split at the side and i didnt trust it to not break!
Deep well bolt extractors eh? Good to know. Been meaning to get some Irwin's for a while but will check out the alternative.