Conti Contact SECURITY - one tire, two max. pressures ??
"The Contact Security is designed for commuters who simply can't risk a puncture; people who want a no-hassle ride to work when speed and rolling resistance is not an issue. This tyre is therefore heavier than the other Continental city tyres due to the Security layer under the tread (see diagram). Due to the thickness of this layer, the likelihood of urban detritus penetrating the tread is minimalised. The compound we have used for the Contact Security uses a mix of carbon and silica as the main agents. Carbon aids tread life whilst the silica boosts grip levels."
"The utmost in safety thanks to an extra thick puncture-proof breaker. Designed for industrial applications
, the ContactSecurity can also perform well in everyday use. Its massive puncture-proof breaker was developed to resist metal cuttings and shards on factory grounds.
In view of its tough construction, it is not a comfortable touring tyre with low rolling resistance,
but it does effectively ward off gravel and shards on short stretches in the city."
You can't say they didn't warn you that it's best suited to riding around steel works !! So if your tires are taking a beating from desert thorns, broken glass or metal debris etc this might be the one to try.
The only problem is WHO do you believe about the maximum recommended pressure
The Conti German website site shows 70PSI max for 700 x 37c
The UK site shows 85PSI max (possible typo error by webpage designers??)
Since I first posted this, Conti UK confirmned 85psi a Conti Holland said it's 6 bars - or 87 psi. So you could get away with 90spi into the bargain.
What the Dutch guys did say: is with the heavy puncture resistant breaker layer it's always best to run at MAX pressure to avoid damage to the sidewalls - which from many posts seem to be where Conti users have damage issues on many models. Possibly because they run on the low end, or under inflated.
Last edited by Rayxt; 02-25-08 at 07:33 AM.