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What is the correlation between tyre width, pressure and glass punctures?
The lower the pressure, the less likely a glass will pierced through, the wider the tyres, the more surface area = weight distributed more evenly, lowered the likelihood even further.
Actually I would expect the opposite, viz. a more stoutly filled narrow tyres to be slightly less prone.
I assumed the same decade ago from listening to old timer sprouting conventional wisdom, only to realised recently it's actually the opposite.
The likelihood of getting punctured is still higher due to the higher pressure and smaller contact point, meaning a glass will very likely pierced through when it does, and people still get punctured on skinny tyres to this day despite the advanced in technology.Belts and construction would, I suspect, make much more of a difference.
Only to a certain degrees, the stiffness and weight is the downside of such tyres, the less flexible the carcass is, the more chance of getting punctures, so it's a catch-22, once the tyres finally gotten strong enough to actually resist getting punctures, it'll be very heavy and stiff, making it less enjoyable (I'm looking at you Durano Plus).
That is why the Conti Competition is much less prone to flats than their Giro.
Doesn't the Giro come only in 22mm? I refer you to the first comment.
The Gatorskin uses a Poly-X breaker. It is much less effective than the Vectran breaker featured in the Competition, GP-4000S etc.
Yadayada marketspeak, what matter is whether it deliver enough grip in the wet, feel fast and doesn't get cut up easily (although cut up does not equal bad tyres), the majority of time is really luck, some people managed well with it, some got repeated punctures on the very same day.
The whole point of the Gatorskin is the DuraSkin sidewalls. These are relevant to defects but not to glass punctures. The Competition ProTection has both Vectran breakers and DuraSkin sidewalls-- as well as, in some variants, a thicker inner-tube. Panaracer, if I recall, used a Kevlar reinforced nylon belt breaker. Kevlar might be the stuff of bullet proof vests but it is quite ineffective against glass shards.
Continental spokesperson >>>>>>>>>>>>>>>>>>>
edscoble-
Vectran sidewalls
Yeah marketing speak vs real world...
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The lower the pressure, the less likely a glass will pierced through, the wider the tyres, the more surface area = weight distributed more evenly, lowered the likelihood even further.
Has this actually been tested anywhere ?
People used to claim the 320tpi Vittoria's where less prone to punctures because as they where supple they deformed around any nasty objects in the road. In my experience they're the most puncture prone tyres I have owned
Anecdotally the rubber compound, the amount of rubber and the puncture protection strip make far more of a difference.
iltmimi
Ste_S
What is the correlation between tyre width, pressure and glass punctures? By what trait should a wider tyre at lower inflation be less vunerable to glass than a more narrow tyre at higher pressure? Actually I would expect the opposite, viz. a more stoutly filled narrow tyre to be slightly less prone. Belts and construction would, I suspect, make much more of a difference. That is why the Conti Competition is much less prone to flats than their Giro. The Gatorskin uses a Poly-X breaker. It is much less effective than the Vectran breaker featured in the Competition, GP-4000S etc. The whole point of the Gatorskin is the DuraSkin sidewalls. These are relevant to defects but not to glass punctures. The Competition ProTection has both Vectran breakers and DuraSkin sidewalls-- as well as, in some variants, a thicker inner-tube. Panaracer, if I recall, used a Kevlar reinforced nylon belt breaker. Kevlar might be the stuff of bullet proof vests but it is quite ineffective against glass shards.