Must admit Alf, the last time I had to change a flat tyre on the motorway I had to call for assistance as I could not loosen all of the nuts.
Thankfully a traffic policeman duly arrived. I had brought the spare tyre out, which just left me and the dogs at the side of the road. It Took
him ages I know this, as he asked me to hold his watch! Eventually after much sweating of brow he completed the task, then after checking
the tread of the remaining tyres and tax disc sent me on my way. I was as pleasant and grateful as could be, there wasn't a laugh in him.

Made sure not to be caught out since.