such a small hole will not create an explosion nor a death treath
then why would the tire dealer(2 diff. dealers) say to leave it.....
in any case, with the pressure sensor, you will get plenty of warning....

I think you are allowed your conservatism
like in ''better safe then sorry''
but don't be alarmist

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j-p - montréal
2007 X5 4,8, saphire black, saddle brown, sport package SOLD
2011 X5 Diesel