DJ_AS Posted August 8, 2017 Report Share Posted August 8, 2017 My other half suffered a puncture recently after her tyre was pierced by a Stanley knife blade, which she has presumably driven over (pics below). My questions is: how far could you reasonably expect to drive on such a tyre before it was completely deflated; alternatively, how long would you expect this tyre to remain inflated? Note: angle is a bit deceptive here - the cut on the outside of the tyre is almost 3 cm long Quote Link to comment Share on other sites More sharing options...
Tony Posted August 8, 2017 Report Share Posted August 8, 2017 The cut on the outside is cosmetic providing the cords aren't exposed the entire length. As for how far can you drive on a flat tyre there's no set distance due to the variables including factors like the weather, heat, rain, snow and so on. Historically the only way to tell is by the condition of the inner sidewall? Quote Link to comment Share on other sites More sharing options...
DJ_AS Posted August 8, 2017 Author Report Share Posted August 8, 2017 Thanks Tony - this happened a couple of weeks ago (25th July) when the weather was a bit better. My wife would've reached speeds of up to 70mph going to work. I've just taken a look at the inner sidewalls and there appears to be no damage at all. In fact, the inner and outer parts of the tyre are near perfect save for the Stanley blade. We were just trying to ascertain whether this would've been a very fast deflation (on her work site, where there are builders present and hence Stanley knives potentially dropped) or whether she picked this up elsewhere and it only became noticeable once she'd got to work. The damage on the outside looks pretty awful (to my eyes), but the inner damage (which I've only just looked at) is nowhere near as bad. Any further thoughts? Would you be comfortable repairing this tyre? Quote Link to comment Share on other sites More sharing options...
Tony Posted August 8, 2017 Report Share Posted August 8, 2017 I would repair the tyre providing the outside is just a cut in the tread. I would also say the tyre deflated slowly because the hole inside is small and the blade was still in place... When run-on the inner wall will show a crease and then friction will start to degrade the inner liner and start to de-laminate. Quote Link to comment Share on other sites More sharing options...
DJ_AS Posted August 8, 2017 Author Report Share Posted August 8, 2017 Thanks again Tony. I think we were all a bit freaked out by the apparent length of the gash. With hindsight, perhaps we should've had the tyre evaluated professionally before getting it replaced at significant cost. Lesson learned: don't judge a book by its cover...! Quote Link to comment Share on other sites More sharing options...
Tony Posted August 9, 2017 Report Share Posted August 9, 2017 Call it a learning curve.... In truth the blade did look like end of days for the tyre so you would be easily sold that it's scrap. Quote Link to comment Share on other sites More sharing options...
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