fatcyclist Posted May 24, 2006 Share Ok, so team mate of mine and ANDRE L buys new bike. Comes with Vredestein Fortezza's. He takes them off claiming "I only ride Conti GP 3000's" blah blah...So now I have a brand new set of tyres. The Fortezza's claim to be able to take 11bar. How safe is this for a clincher? Going to be mounting them on a set of Campy Vento's.... Link to comment Share on other sites More sharing options...
BikeMax Posted May 24, 2006 Share Don't do it - unless you are riding on a glass smooth surface then you will add rolling resistance and completely stuff up any handling/grip.Even for a big guy like you I would not go over 130psi on a good surface / TT and 120psi for normal CT roads.Think of it like taking a Ferrari down a jeep track - feels fast as it bounces over the terrian but actuall has very little contact area.Safety wise you would need to check what the rims will tolerate. Link to comment Share on other sites More sharing options...
fatcyclist Posted May 24, 2006 Share Yeah I was thinking maybe 9bar max. With the SLR carbonio saddle, and XTR seatpost (yes I know its a roadbike you pedants, but I needed something light AND strong), there isn't a whole lot of give smileys/smiley5.gifsmileys/smiley5.gifYou coming to do the Hexrivier MTB BikeMax? It's one of the most stunning rides I did last year, and well worth the time and effort to get there!! Link to comment Share on other sites More sharing options...
BikeMax Posted May 24, 2006 Share Maybe - have not ridden since WP champs and am still trying to get rid of this sinus thing.So will see how I go.BTW, I reckon those Fortezza's kick the GP3000 by miles - no competition. Link to comment Share on other sites More sharing options...
fatcyclist Posted May 24, 2006 Share I'm just going there to enjoy the route (and then for the braai at WW afterwards).. Not planning on racing it at all. Last year I fell in love with the Karoo desolation, especially the old abandoned train stations etc you passed. Just something about the ride that made it fantastic smileys/smiley9.gif Link to comment Share on other sites More sharing options...
Spinnekop Posted May 24, 2006 Share Fatty.I rode those tyres for a year. Got almost 9000km on them! And they can still go!Had them at 8.5 bar. I am a lightweight though clocking in at 74kg. Link to comment Share on other sites More sharing options...
Chunky Posted May 24, 2006 Share Those are what I use. Pump them to 11 bar all the time with no problems at all. Link to comment Share on other sites More sharing options...
fatcyclist Posted May 24, 2006 Share Had them at 8.5 bar. I am a lightweight though clocking in at 74kg. The reviews on the web I find all claim they're best run at 140psi, so I'll try that. I'm a heavyweight, clocking in at around 95-96kg's (depending on what was for lunch smileys/smiley36.gif) so what BikeMax said makes sense. Anything higher will rattle my teeth from their sockets!! smileys/smiley5.gif Link to comment Share on other sites More sharing options...
linnega Posted May 24, 2006 Share Safe for the tyre to go to 160psi, but like Bikemax says a waste of time. Not sure that the rims would hold (I think they have a 150psi max rating, although Campag is know for underrating the strength of their rims). Anyway the main benefit of the Fortezza's is they have a very flexible side wall so they feel comfortable without but are still fast. Pump them to 160psi and the sidewall of any tyre will be rock hard. I would recommend pumping a little more (10psi) than you usually use on clinchers so that they don't feel too soft when you first ride them. Link to comment Share on other sites More sharing options...
ewep Posted May 24, 2006 Share I ride with them, GREAT tyres. A few kgs lighter than you fatty. As BM says, not more than 9, MAYBE 10. I usually ride at about 8.5, nice hard ride, but still comfortable! My tyres have 3500 km on now, and still going strong with a LOT more to go!!!!! Link to comment Share on other sites More sharing options...
Chunky Posted May 24, 2006 Share hmmmmm....I now weight 125 kg, and If I dont pump my wheels to 11 bar I feel like I am on the rim. Obviously time for a diet. Link to comment Share on other sites More sharing options...
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