I have tested both extensively from a rolling resistance perspective and they are so close, go for reasons other than CRR, ie puncture resistance, ease to put on, price......those I don't have any data on.

Do you think the contis are more puncture resistance than the vittoria's?

https://www.bicyclerollingresistance.com/...oria-corsa-graphene2
On tread thickness, much the same.

If you're worried about punctures then the GP5000 TT is the better option. I've used these for training whereas I wouldn't do so with a Corsa Speed. Crr wise they are very close so you're not giving up much - another option is a Michelin Power TT which I quite like and have used in training too, but they're not as robust as the GP5000 TT.

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AeroCoach UK
http://www.aero-coach.co.uk

you are comparing the wrong conti and vittoria tyres

https://www.bicyclerollingresistance.com/...toria-corsa-speed-g2

iam a fan of the michelin thicker thread and dont forget its tested with butyl inner tube vs 20 g sealant for the other 2 . its a wash between the three to be honest and aerocoach would seem to agree.
at least if you run latex tubes the michelin is the one and i would agree its a tinny bit more puncture resitent and more offten than not the cheapest of the three

interesting at least we agree the the vittoria is the most fragile lol

Hi Xavier - how does the Titan do with the GP5000 TT? Wrong shape compared to the corsa speed?

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Dimond Bikes Superfan

Thank you. I have replaced the Conti one in this comparison:https://www.bicyclerollingresistance.com/...oria-corsa-graphene2
But the Vittoria I chose is the non-TR version which I assume the OP would be rolling, since they have tubes in. You have selected the TLR version of the Corsa. Whatever, the Conti's Crr is better than the Vittoria, on those tests but quite a bit worse in terms of its puncture resistance score.

Exactly, I feel nervous whenever I race with that tire!! And that’s why I’m thinking about switching.

I agree all these tires are pretty close. I use 25mm Corsa Speeds as my daily tires on my TT bike with latex tubes and very rarely get flats (maybe once a year). This might be a combination of decent roads and my running lower tire pressures.

One factor in my choosing Vittoria tires is that I find the Contis to be marginally harsher in ride quality. I find comfort definately translates into better race performance for me but YMMV.

I have a bunch of regular GT5000 tires, so I will train with them and race with Vittoria. You are right. They are definitely comfortable and smooth.

At the end of the day you will get many different opinions which one is the least likely to puncture
And I guess at the end of the day the least biased is the rolling resistance test but then this is not always real world .
If you are nervous then maybe non of the three is right ...

Does any of the Continental aero magic still exist, or has the spell worn off?

No, it actually works very well with a 5000 TT. The shape is slightly different to the older clincher 5000s.

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AeroCoach UK
http://www.aero-coach.co.uk

Anyone switching to Conti's, I highly recommend treating yourself to one of these:


https://koolstop.com/...tire-bead-jack-ks-tj

I've always found Vittorias, in general, to be more fragile than Contis.

Contis are more supple, more durable, with better grip, and sublime road feel.

IME: Go Conti.

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no sponsors | no races | nothing to see here

It depends on your wheels. I can put the tires on with hands with no problem. Zipp wheels and tires are GT5000.
I have one Chinese made cheap carbon wheel and oh my goodness. It's a lot of hassle to put the same tire on.

Interesting, my personal take is the opposite. I tried (tubed) GP5000s and found the grip worse than the vittorias I'm used to. But when I went to put some vittoria rubinos tubeless onto my new Roval wheels then they were the second tightest and hardest to install tyres I've ever had. The worst being a dedicated wheel on trainer tyre some 20 years ago and I swear my thumbs haven't recovered yet from that.

True, my clincher/tubeless tire experience is limited to a few wheelsets.

Zipps + Vittoria Corsa tubed clinchers = SUPER easy

HED Jets + Conti 5000 tubed clinchers = horrible

Bontrager RSL + Conti 5000 Tubeless = horrible

Curious if you looked into the new Pirelli P Zero Race TLR version. I've heard it's a good option as well. Not sure about any puncture resistance on it.

FWIW, having spent a week in Kona last year putting mostly Conti tires on a collection of wheels from the same manufacturer, it became really obvious that even with the same model/size tire there's pretty significant variation in how "tight" the Contis are. We basically saw two groupings of the tires, a "tight" set and a "loose" set. The tight set was, well, tight. The loose set was more challenging to bead up. My guess at the time was that there were probably two molds running and they vary slightly, just as was the case with the older GP models.

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Tech writer/support on this here site. FIST school instructor and certified bike fitter. Formerly at Diamondback Bikes, LeMond Fitness, FSA, TiCycles, etc.
Coaching and bike fit - http://source-e.net/ Cyclocross blog - https://crosssports.net/ BJJ instruction - https://ballardbjj.com/

Over the past 5+ years I've always been lucky enough to get the mold producing the tight versions! lol

FWIW, there definitely seemed to be a trend towards European athletes having the looser fitting tires. Small sample size, though!

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Tech writer/support on this here site. FIST school instructor and certified bike fitter. Formerly at Diamondback Bikes, LeMond Fitness, FSA, TiCycles, etc.
Coaching and bike fit - http://source-e.net/ Cyclocross blog - https://crosssports.net/ BJJ instruction - https://ballardbjj.com/

I install the same tire on the different wheels and definitely wheels can vary too. Most tires go on easily on Zipp wheels. I have hard time mounting them on non-Zipp wheels most of the time and it’s really frustrating. I don’t think it has to be that tight.