bought some wheels and a fitting kit. got delivered this morning so have been fitting the new wheels.
went all round the car torquing up the wheel bolts, and i found two that are just spinning on one of the rear wheels.

so i jacked the car back up and removed the two good bolts. the other two are just spinning. wont come out, wont go in any further. does this mean they have cross threaded the rear hub? seems a little odd.
also with this in mind is it safe to drive down to the garage? 10 mins away
thanks in advance