It seems that everything is now smaller compared to when we were kids, could it be that we are just so much bigger and as a child things looked big by comparison.
Not a chance ... they were real wagon wheels, and they were covered with chocolate, thick. I am still a sucker for them, despite the fact they are now covered with thin plastic substitute chocolate.
I can remember the time when you could buy a wagon wheel at the start of the day, have half for breakfast, another half for your dinner, another half for your tea and still have enough left for a hefty old supper before bed.
By the way, there is a web page out there on the original Wagon Wheel, and he has kept an original, unopened, to prove just what size they were ... and I thought I was eccentric.