I use the Challenge on my Romulus, from time to time. They're very nice. They were a pain to mount on my Mavic Open Pro the first time, but have since stretched and when I go back to re-mount them, they go on relatively easily now.
They are slightly plumper than a Roll-y Pol-y or Ruffy Tuffy, but not by much. In my experience they roll faster than both, though the RP/RT seem to have better grip in wet conditions (the Challenge slid around a in a couple of wet corners, though I didn't lose control and bite it). The herringbone tread pattern leads to some road hum and vibration that the semi-slick RP/RT don't have, but it isn't anything too bad. The Challenge tread also seems a bit more fragile than the RP/RT and is prone to get more cuts, though the cuts I've gotten so far are shallow and haven't gone through the casing (as far as I can tell). As for flat resistance, the Challenge have been good and comparable to the RT/RP: only one flat so far. (I never had a single flat on my Ruffy Tuffies and perhaps only 1 flat on my RPs.) Their price is a bit steep, but if that is no deterrent, they're definitely worth trying. A On Dec 3, 2:22 pm, Steve Palincsar <palin...@his.com> wrote: > On Thu, 2009-12-03 at 14:19 -0800, R Gonet wrote: > > While we're talking about boosting performance with a tire change, has > > anyone considered the Challenge Paris-Roubaix tires that Jan sells at > > Vintage Bicycling? They are supposed to be very fast. If anyone has > > them, I'd like to know what the 27 mm tires actually measure. > > A friend of mine is using them on his Rambouillet. He can't stop raving > about how nice they are. I believe they measure 28mm. -- You received this message because you are subscribed to the Google Groups "RBW Owners Bunch" group. To post to this group, send email to rbw-owners-bu...@googlegroups.com. To unsubscribe from this group, send email to rbw-owners-bunch+unsubscr...@googlegroups.com. For more options, visit this group at http://groups.google.com/group/rbw-owners-bunch?hl=en.