I guess Im kind of off topic but does anyone know a good site to stream newly released tv shows online ?

@Patrick Luka flixportal xD

@Vincent Ari Thanks, I signed up and it seems like a nice service =) I really appreciate it !

@Patrick Luka no problem xD

Ok fair point, good tip thanks!

No, thank YOU for the awesome videos!

I bought them for these reasons, "high" puncture resistance, good grip and performances, and I still have them after many years... a bit worn out, but the thread is not apparent yet (that's usually when I think about replacing my tyres). But compared to the fastest tyres, they need twice as much power (and have ~2 x more puncture resistance).

Thank you appreciate that. Only a small number of future videos will have xls sheets so enjoy! note these sheets are also periodically updated server-side.

I see crashes in the corners on hard continental tires all the time. I refuse to ride them

mindciller haha, i always see vittoria tiers failing. Strange world...

GP4000's aren't hard, you're probably confusing them with the cheaper Gatorskins or something like that. Personally I'm yet to find a better tyre than the GP4000.

@@Solidboat123 specialized turbo pro?

@Stevo Reno Not sure what you mean by hard? In terms of compound (which is what I meant originally) they're definitely a performance-orientated soft 'racing' tyre, nothing like a hard compound you'd get on a cheaper training tyre. And if you meant in terms of feel, I still don't agree - I've run GP4000SII's back to back against Vittoria Evo Corsas (which are generally known for being a pliable and comfortable tyre), and couldn't feel any difference

A thank you means a lot esp on youtube!

***** Its really great to receive this kind of feedback. Obviously the CRR watt savings are lower at slower speed but great result! ps Did you use the pressure calculator too?

Sorry forgot to add that. I also used the tyre pressure calculator and pumped them to the recommended pressures

So you think you would have been faster on the conti 4000s than on the corsa speed for instance? what makes you think, you need some recommendation? they already put out a list of top rolling tires and corsa speed tops the list and every other thing that follows till around 10w will just be fine, why do you have to act like using that crappy spreedsheet that don't work again was somehow some lifesaver ?

Did you try them aerotham? Quite expensive, mostly lighter, but not as fast as latex? there are cheaper brands on the market now (RideNow, etc.) I have no idea about their puncture resistance, apparently the ~40 grams TPU tubes are better at this level...

In the bin

Im not sure I trust flows aerodynamics. Check out hambini

Try https//fft tips/tyre and https//fft tips/surface. Try and get conti 5000

Thanks, hopefully I will also update this table with more data in the near future. If anyone has any large scale CRR data tables please send it to me for this purpose.

BTW your channel is really difficult to search for, in KZfaq - Can you add some keywords to make it easier??? (Searching on Fast Fitness Tips doesn't work for me - Only worked when I removed the spaces between the words)

ItsDanK Very true, thank for the valuable personal feedback. Safety and cornering are important no doubt.

See the problem with your kind? you chime in, criticize, cause commotion and confusion and offer no solutions. Now, thatyou've made it known that Corsa speeds are useless in corners, what tire/tires (at least 3 other brands) combine speed and cornering grip. Straight to the answer otherwise, we can both agree you are a paid troll come other tire brand.

thanks! now I wonder if there is enough data to make a tubular version of the solver/decision aid??

Or is there enough demand from tubular riders. I figure most of the tubular market is targeted at off-road, for whom rolling resistance is not a big issue.

tubular is still huge in road cycling esp those who wanted the best wheels...mostly the lightest and most aero wheels from last 5 years have been tubular although this is changing now perhaps.

FastFitnessTips: Cycling Science! Over the last 2yrs, I've bought 2 sets of tubulars for use as my daily riders. They were dirt cheap on eBay. Both sets vastly improved my bike's handling over clincher. Am curious about gains in rolling resistance, if you could do a vid on that.

Haha....at least someone likes us!

Its would be extremely close because I believe the CRR is very similar, but until someone tests the two tyres under the same conditions and PSI we don't know. NB I cannot comment on the safety of those pressures on a clincher/clincher rim. See our calculator on tyre pressure calculator for more info...it has been updated today! kzfaq.info/get/bejne/edKbkq99p7-qqnU.html

The TL of course would not be at 220psi, just its max pressure. The surface is as smooth as poss, so no need to have wider tyre at lower pressure... At a recent Age-Group National Track Champs (U17's) a past Olympic medallist advised the use of Pistas at 220psi over the use of Conti GP 23c supersonics on clinchers at 145psi. He also said the use of an aero helmet without visor is not worthwhile... We went with this and used Pistas at 220psi and a Kask Bambino with visor ( as he'd donated it!) but I wondered whether would be a measurable difference. I suspect the data is not available. But track racing has specific environmental conditions which differ from the road. For example the Vittoria TL's would probably not last at all long on the road but would be fine on a velodrome. But then you'd not use Corsa Evo Pista CS's/Cl's on the road either and certainly not at 220psi, whereas you def would on the track.

No not yet; nice idea, but we do have a big MTB bike database that we are processing right now!

Fastfitnesstips Thank you for the reply!

www.goo.gl/wJP7ZI

To explain: to download most of our spreadsheets (some are completely free) you either need to 1. ask us nicely by email 2. join us as a coach athlete 3. join patreon or 4. say thanks by clicking the tweet4link. Any of 1,2, 3 or 4. If you are not on twitter, 1,2, or 3.

Thx for those options, still stymied tho because your website (Patreon) doesn't seem to load (otherwise would look at joining), am not sure what tweet4link is (I don't find that on the FFT Tyre Solver Google spreadsheet), & also don't seem to find your email?

Patreon is definitely working, try another browser or device! email info@fastfitness.tips; thanks for your kind comments and support!

here you go! medium.com/@alexfastfitnesstips/should-you-go-for-asymmetrical-front-vs-rear-tyre-23c-25c-sizes-b144dc46966b

Thank you very much! So from this I believe that the "very marginal gain" may not be worth the "futzing" needed to balance the front / rear tire pressures. Given my Park Tools floor pump (+- 1psi maybe), in my house without my fat butt on the bike, those tire pressures are somewhat attainable. However, cold versus warm versus hot days here in Raleigh, NC (and me) across the two tire sizes and air volume differences will also wreak havoc on tire pressure about 30 minutes into a ride. If I can balance the tire pressures and be somewhere +- 1 watt, I think that the real benefit may be a bit of minor ride comfort and puncture resistance (I tend to pinch and pop the rear more often when the unavoidable stones are spread over the road's shoulder). Still, a very marginal numeric gain for a bit of futzing and maybe some subjectivity in the ride feel and avoidance of the mid-ride flat. Its always good to sound everything out with some real data! Thanks again!

Yes but the list of tyres has been updated fft.tips/tyre2

gp4000 II seem to be the tire of choice around these parts. is that fad? or experience-based? no answer needed, probably no way to tease that out. just sayin.

Maca Its one of the hardest to fit in the industry.

Side wall issues... anyone who has used GP4000 S II knows it’s flaw is the weak sidewall. GP4 is so prone to getting sidewall cuts that out of 4 of my personal tires, 2 has deep cuts on the sidewalk and one failed catastrophically (blowout during riding) specifically due to this. I’ve emailed Conti customer support but they pretty much just told me GP4KSII isn’t reinforced in the side wall and that it’s predominantly a race tire so this weakness is justified... all in all they just straight up told me to buy gator skin or 4 seasons instead...shame. All in all, for anyone looking into getting GP4KSII, beware that they are very susceptible to sidewall cuts, and Conti won’t help you out if you reach out to them over this issue.

@@FeelingGolden How much do you weigh? what do you ride now without any issues?

Tubeless has a slight edge due to puncture resistance and ability to go low pressure with no pinch flats and slight weight savings. CRR should be better in most cases too.

@@Fastfitnesstips what's crr?

@@kay19833 rolling resistance

He's talking about Open Corsa Speed which is different from G or G+. Speed is for racing and it doesn't have the durability of G+ so be careful.

Evan Blankenship latex tubes are only good for racing as when they puncture, the burst. Making them unrepairable

This one? Bit.ly/ffttyre

@@Fastfitnesstips Not editable even in app, all says view only and when I give it my email it reloads with the same result

@@chaseorstad9677 are you talking about fft.tips/tyre? You asked for edit permission??

FFT does not currently have a website other than www.fastfitness.tips (which is this channel), and social media links. If you meant Tom Anhalt thats www.bikeblather.blogspot.com/

specialized s-works turbo 28 clincher

Cool, thanks.

Did you watch this video answering this question? kzfaq.info/get/bejne/edVxdbKcxJ6veGw.html

@Fastfitnesstips I did eventually watch that video, woyld I be correct in the following assumption; due to the (likely) more aerodynamic profile of a smaller tire on a wider rim, it is probably the case that all else being equal, a tyre that is smaller is better?

The best thing to do if match the tyre width to the rim, narrow-narrow / wide-wide. The effect is only really important with side wind (yaw > 3). thanks for watching.

Hi again... care to comment having watched this?? kzfaq.info/get/bejne/r9h4q7SYlrW7YHU.html

hi yes I saw thats GCN video....is there a specific question? Did you watch kzfaq.info/get/bejne/edVxdbKcxJ6veGw.html?

please watch our rolling resistance videos eg kzfaq.info/get/bejne/edKbkq99p7-qqnU.html

thanks, good tip thanks, we hope to update this list sometime in the future.

how much did you pay for your bike?

@Simon Gergolet $2000, but that's irrelevant to this discussion.

@J Y might be, but as a point of attention: the clicher heavily influence how you handle and how fast you ride at the same effort. Probably spending 300$ less in the bike or wheels but better clinchers is a very good idea (considering a couple of years of use...)

what continentals are you talking about? continental is not a model, it's a brand name you twat. You're probably from Poland too.

You need to book a doctor's appointment asap!