I've learnt something new - my Ultremo's have also increased in size!!! About 24.5mm now, still narrow, but let's see where they settle! Amazing, I always thought the casing was essentially non-stretch.

Regards,

Courant

Should be getting mine (Michelin Pro4 Comp Service Course) by tuesday. I had logged about 3000 on my Pro3's with a total of 2 flats on each tire in 9 months. The conditions here can be gritty with glass off A1A but for the most part its pretty clean. The Pro3's grip so well in the rain that I could not give them up despite the flats. The one thing I did notice from the Pro3's is how fast the tire compound became cut up and brittle. I am anxious to see how well the new tires hold up since my rear tire is about done.

Shoemakerpom2010

Have you received your Pro4 Comp Service Course yet? All the places I check only have the regular Service Course in stock.

! Michelin Pro4 Comp Service Course

So far I can find those tyres only in Germany and the shops charge a huge amount for shipping...
Where did you order yours?

Hi claus, try here ... http://www.ribblecycles.co.uk/pp/road-t ... G/MICHTYRF

Michelin uses the following names:
* MICHELIN PRO4 Endurance,
* MICHELIN PRO4 Service Course,
* MICHELIN PRO4 Comp Service Course,
* MICHELIN PRO4 Comp Limited Service Course.

Ribble lists three Pro4 tyres right now:
MICHTYRF221 - Michelin Pro 4 Endurance Folding Tyre
MICHTYRF211 - Michelin Pro 4 Race Folding Tyre
MICHTYRF209 - Michelin Pro 4 Race Service Course Folding Tyre

The first one is an obvious match, the last one seems to be the same as "PRO4 Service Course" because it is listed at 110tpi. The middle one might be the "Comp" but:
- there is no description on the Ribble website at all,
- it's "out of stock" anyway.

Maybe sometime this month they will become available (hopefully at my favorite site for tyres.)

Word from QBP is at the end of February.

I am running the "PRO4 Service Course" since they are the only ones available here in the states via ebay. My Pro3's were shot and I needed tires to commute so I went to the Pro4. My intension was to get the comp version but nobody had it. The service course version seems to work very well although it did feel bigger maybe because of the new profile. They also felt a little more sticky then the pro3's did at 110 pressure. I like them so far but if I see somebody gets the comp version and they say they are that much lighter and better then I will put these on the wife's bike.

What did the Service Course weigh in at?

Just had two Pro 4 Service Course delivered today. Just weight one and it was 204g.

so did Continental change the rubber formula for the Attack/Force?

I was so disappointed with my Pro 3s that I am not inclined to even try the Pro 4. I can't remember exatly, I think they both lasted about 3 weeks.

On the other hand, I have a basement full of Conti GP and 4000s that got worn down to pretty close to the threads, so I replaced them and thought I would use the older tires on training wheels. But I just can't wear them out fast enough, so the stock just keeps building up over the years.

I just got some Pro 4's. I have been riding the Conti 4000s, but wanted to try something different. I put the Pro 4 on my rear wheel, but not yet the front. I bought the "Pro 4 Race Service Course" version from Ribble. After a few rides it seems fine and no bad cuts, etc. Compared side-to-side with the Conti, however, it looks noticeably narrower; maybe 1 or 2mm difference. If I like the tire I might buy 25mm next time.

The shape is not new. Dunlop called it a "trigonomic" profile back in the '70s with their K81 and K81R motorcycle tires. I used them on my motorcycle, and the shape is not hype. They were so far advanced in terms of cornering feel compared to anything else on the road back then. The contact patch increases in size as the tire is leaned over. I can't see the benefits being as readily noticeable on a bicycle, but I'm about to buy a set and try.

As for puncture resistance, I'm not the best person to comment on that aspect of any tire. I haven't had a flat since 1978.

Any links to the latest Tour tire test?