bloody hell. I pulled out a almost 3.5cm long ribbed nail out from my nearly new Toyo tyre (2nd hand though), have no idea how it nailed. Thanks god it is 5 degree in, rather than 90 degree. It stucked in so hard that it is impossible to finger pull, with no tools I used all my (home/lab/locker) keys to help, pulled it out after 45mins. Only 1cm of the nail end surfaced before pulling, and I was terrified that the pulling seem never end as I did not know how long that nail is. Well it has been few hour now, and the tyre still remain the shape as it was, not flatted. So I guess it is ok. Hope further damage will not be developed.

Nice drawing, personally I would get a tyre dealer to check it out just in case.