John979 wrote:Continental posted the article in English here: http://www.conti-online.com/generator/w ... 00s_en.pdf
Not that it is going to change anyone's mind...
Based on my experiences with the Conti 4 season, GP4000s and the Michelin P2R and Ultremo tyres, its a lot of rubbish there!
Firstly, Conti's in my experience are amongst the most difficult to mount fresh out of the box. Even when 'broken-in' its still difficult to mount with tools. Those guys mentioned without tools ? Wow.. probably world class finger wrestlers they have there!
Next, Michelins are a little tight new, but once broken in, they are most often then not mountable without tools. Definitely easier than Conti tyres! And Ultremo's have a fairly loose loose bead and will mount easily without tools indeed.
Next is the measurement of width. The measured the Conti's on par with Michelins and wider than the Ultremo ? In my use and observation of these tyres, the Conti's are obviously narrower than the other 2. The Ultremo's being about on par with the Michelin, probably 1.5-2.5mm wider than the Conti's at full pressure.
As for rolling resistance, its not quite a clear where or how they got the results but straight out of the box, the Michelin's simply roll better. With a little breaking in, the gap between and the GP4000s narrows somewhat, with the P2R's still a little bit better. The Ultremo's feel a little crappy new, but once broken in, roll just as good as the GP4000S.
The details there are not coherant with what I've experienced with tyres I can get on the store front.