J∆kk∆ls Posted February 13, 2020 Share Summer Yksion Pro UST tubeless tires 25mm, 95psi back, 90psi front. 86kg Winter Conti 4000S. 90psi back, 85psi front, 86kg+ (winter riding is slower and less hills, black ice!) Link to comment Share on other sites More sharing options...
NicholasT Posted February 13, 2020 Share Hutchinson Fusion 5 All Season. 28mm Tubeless.62psi (4.2bar) Front and back.About 83kgs. Link to comment Share on other sites More sharing options...
Veebee Posted February 13, 2020 Share 81kg Continental GP 4000 ((n my opinion a better tyre than the GP5000 ) 28mm (Scott Foil rim brake / Supersix rim brake) rear 6.2 barfront 5.9 baryou one of the very few people who think that... Mongoose! 1 Link to comment Share on other sites More sharing options...
eddy Posted February 13, 2020 Share Real question: There are some very precise measurements being quoted, but how accurate are they ? I tried two pumps and their (analog) gauges differed by about 10% and neither was what my digital Topeak read. I am going with the digital one. Long Wheel Base 1 Link to comment Share on other sites More sharing options...
Mamil Posted February 13, 2020 Share I have to aggree with you RE the 4000 and 5000 - my 5000's felt horribly squishy and unstable and punctured frequently. Wasn't happy. 81kg Continental GP 4000 ((n my opinion a better tyre than the GP5000 ) 28mm (Scott Foil rim brake / Supersix rim brake) rear 6.2 barfront 5.9 bar Mongoose! 1 Link to comment Share on other sites More sharing options...
Wannabe Posted February 13, 2020 Share Vittoria Rubino Pro 700x23c:+- 7 bar on my newish analogue Track pump.+-85kg in "racing tim" Edited February 13, 2020 by Wannabe Link to comment Share on other sites More sharing options...
Duane_Bosch Posted February 13, 2020 Share There are some very precise measurements being quoted, but how accurate are they ? I don't think 100% accuracy is that much of a factor. Most of us will use the same pump all the time so the relative pressure will be the same not so? Weirdly I have 2 pumps. One is for the roadies and one is one of those air tank boys and that lives with the mtb's. Edited February 13, 2020 by Duane_Bosch Link to comment Share on other sites More sharing options...
Prince Posted February 13, 2020 Share Wow, that must an absolutely terrible ride! Why on earth would you pump them so hard? I have just always had them at that pressure and don't like the feel of soft tyres. I ride my 25mm tubbies at 9 bar! Long Wheel Base 1 Link to comment Share on other sites More sharing options...
Jehosefat Posted February 13, 2020 Share I have just always had them at that pressure and don't like the feel of soft tyres. I ride my 25mm tubbies at 9 bar! You mean you don't like the feel of comfort and grip while cornering? Schnavel 1 Link to comment Share on other sites More sharing options...
Prince Posted February 13, 2020 Share To be honest never tried lower pressures. I just sort of inflate to just below the suggested max on the tyre. I'll drop the pressures for this weekend's ride and see. Edited February 13, 2020 by Prince Long Wheel Base 1 Link to comment Share on other sites More sharing options...
Furbz Posted February 13, 2020 Share 25mm GP4000s II Tubolito Tubes Weight: 69kg TRAINING Front: 6bar Rear: 6.3bar RACING Front: 6.6bar Rear: 7bar all about gaining comfort on my training rides. in races i inflate higher Edited February 13, 2020 by Furbz Link to comment Share on other sites More sharing options...
Furbz Posted February 13, 2020 Share To be honest never tried lower pressures. I just sort of inflate to just below the suggested max on the tyre. I'll drop the pressures for this weekend's ride and see.you have not lived. might be slightly more rolling resistance, but the comfort gained is something you cannot turn your nose up to. especially if its a training ride Link to comment Share on other sites More sharing options...
Jehosefat Posted February 13, 2020 Share you have not lived. might be slightly more rolling resistance, but the comfort gained is something you cannot turn your nose up to. especially if its a training ride Pretty much all of the studies show that lower pressures have lower rolling resistance on everything except perfectly smooth roads so inflating your tyres harder doesn't even give you less rolling resistance unless you are doing track cycling. Link to comment Share on other sites More sharing options...
The Ouzo Posted February 13, 2020 Share Pretty much all of the studies show that lower pressures have lower rolling resistance on everything except perfectly smooth roads so inflating your tyres harder doesn't even give you less rolling resistance unless you are doing track cycling.all this talk of rolling resistance of fatter lower pressure tyres, has there been any studies that look at the aerodynamic pros/cons of running fatter rubber ? Link to comment Share on other sites More sharing options...
Long Wheel Base Posted February 13, 2020 Share Pretty much all of the studies show that lower pressures have lower rolling resistance on everything except perfectly smooth roads so inflating your tyres harder doesn't even give you less rolling resistance unless you are doing track cycling.Link to these studies, please? Keen to read them. Link to comment Share on other sites More sharing options...
HdB Posted February 13, 2020 Share Link to these studies, please? Keen to read them.Not a study, I guess, but an interesting read:https://www.bicyclerollingresistance.com/specials/grand-prix-5000-comparison Comparing GP5000s at various widths and pressures.For example: Underachiever and Long Wheel Base 2 Link to comment Share on other sites More sharing options...
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