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Thanks Ed, but if GP4000s are as fast then why do Conti bother making the GP Supersonic?
@skinny, I'd like to see some results too.I just have in mind riding fast because it feels good and not minding getting punctures because it's not for races or TTs, or having a short tread life because I am frivolous.
In this case isn't any 'puncture protection' layer just unnecessarily adding rolling resistance and weight?Not tubs, so I can patch and continue if necessary.
Polka_Dot-
why do Conti bother making the GP Supersonic?
Because they're aimed for TT.
If you want to go faster, get bigger tyres and run a much lower pressure than you think.
The Conti GP 4000s is the idea choice for UK road and condition.
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Gp4000s<GP TT<Supersonics in terms of speed.
Opposite true for puncture resistance. The GP4000s really is a triumph in terms of combining speed and puncture resistance, tbh I'd stick with then as Supersonics are just fragile for daily use.
edscoble
umop3pisdn
In that case, go for 25mm GP4000s if you want to go fast.