Had a flat tire...Just want to share the incident

[2010X5d]

After more than 2 months and 4500 miles on my X5d, I was on my way to a weekend trip to boston, While coming back TPM light came on and when I visually checked the pressure of the left front tire it was pointing to, there was some pressure drop.
I added some air and reset the TPM and drove for around 40 miles with speed of 70 mph, after 40 miles added some more air and drove to the destination without any problem.

This morning, there was again TPM warning with air pressure drop.
I took it to Town Fair Tires, they checked the tire and repaired it ( put a patch internally). Seems that there was a hole, may be a nail hit but was not sure as there was no nail.

Good part was Town Fair Tires charged me on $ 4.25 for changing the valve as other flat repair was free from them.

I spoke to the technician and he told me the tire is as good as the new one and no worries.

Thought of sharing this incident ...Let me know your views.