I personally would not allow an 8 week old puppy to have pigs ears, or any other form of raw hide. They are all essentially the same thing - dried animal skin (otherwise known as leather).
If you do a search here on either raw hide or pigs ears, you'll find a multitude of threads where someones dog has choked, and some cases where the animal has died. The sheer number of those stories is enough to let you know just how common it is.
There is a second problem with raw hides - and that is bacterial poisoning (food poisoning, in human terms). The digestive tract of a dog is extremely short - it is designed for the very fast digestion of meat and bones. In fact, it is that short-tract design that enables dogs to consume raw, even 'gamey' foods that would almost certainly make people ill. The reason dogs don't get sick is because their digestive juices are extremely strong, and the period food spends in the gut very short.
Alas, this is not the case when a dog consumes leather. It is not digestable and sits in the dogs gut for days, even weeks before finally being passed in a similar state of solidity to which it was when consumed. And yes, that bacteria-laden leather can cause blockages as well as bacterial poisoning. Definitely not a risk a baby puppy should be exposed to.
More minor effects of chewing/consuming raw hides etc is runny stool and throwing up. Again, it is generally the bacteria that is the cause.
Personally, I do not allow my dogs (at any age) to have raw hides, pigs ears or any other dried body part. They get raw bones to chew on.