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Had a Tyre puncture. OK no big deal. Went to a Tyre repair shop and got it patched. Nothing to write about. But later I googled about Tyre punctures and now am a bit worried due to reasons below. Hence the questions. The puncture was caused by a bolt about 3" long and a bit thick in diameter. I did not bother to measure it and threw it away at the Tyre repair shop. It was about 8mm dia. My previous experience with punctures are with very much smaller screws etc which were fixed with a plug type repair done from the outside of the Tyre. Tyre repair place said since hole is big, a plug won't do and a patch has to be done from the inside of the Tyre. Such a repair was done where a heated press was used for about 20 - 30 mins. A pic of the Tyre after repair is here : I hope it is clear enough. Concern #1: The info from the web in general says if hole is more than 6mm or 1/4 inch, do not patch. Replace Tyre. Well I wonder if there can be black and white definitions, where a 5.5mm hole is safe to patch and a 6.5mm hole is unsafe to patch. I suppose these are guidelines but numbers like less than 6mm have to be used to give the idea. Also this info may be for higher speeds in USA, Europe etc, than in an SL context. Hole is bigger than 6mm but less than 10mm, perhaps 8mm and a precise measurement can not be made. Is strict compliance of guidelines better? For the moment this Tyre is used in Colombo traffic. Tyre repair bass 'thinks' OK. What is your opinion please ? Would you do 100kmph on a highway with this Tyre ? Concern #2: The hole in the Tyre is not filled from the outside. The info from the web says the hole shaft has to be fully filled. I hope I understood the info correctly. The Tyre repair bass says this is the way they repair and no need to fill from the outside and it is OK. I have no experience in getting Tyre repairs for holes this size. But from what I see, I don't feel comfortable with it. Since that spot is a bit soft, I feel that a piece of rock like a typical kalu gal piece about 1" in size with a sharp corner, found in the road side 'may' damage the patch applied from the inside. I wonder if the pic is clear enough (if you zoom it). Is any filling from the outside done when Tyres are repaired (here in SL) ? Or it does not matter ? What is your opinion please? Safety is a major concern. I wish to make an educated decision on replacing the Tyre. I feel replacing the Tyre (I guess it will have to be two Tyres) just for any hole in the Tyre that can be safely repaired is a waste. But if it is safer to replace the Tyre I will do that. Your ideas and advice are most appreciated. Thanks!