NEW GP5000S TR

[LOWIEV]

I need your advice .

I'm finally jumping the tubeless bandwagon.
I've already decided that i will use Conti STR. But i'm in doubt wheter i should use 25mm/28mm combo or 28/28.

I'm mounting them on Roval Rapide CLX wheels.
I'm using them for racing in Belgium (and also training, but i prefer training om my race setup to build confidence).
im a 63kg rider fwiw.

Wil 25/28 be perfect for racing, but am i then risking more sidewall-slashes? Will 28/28 be to sluggish for racing?

thanks for your advice

[aeroisnteverything]

I need your advice .

I'm finally jumping the tubeless bandwagon.
I've already decided that i will use Conti STR. But i'm in doubt wheter i should use 25mm/28mm combo or 28/28.

I'm mounting them on Roval Rapide CLX wheels.
I'm using them for racing in Belgium (and also training, but i prefer training om my race setup to build confidence).
im a 63kg rider fwiw.

Wil 25/28 be perfect for racing, but am i then risking more sidewall-slashes? Will 28/28 be to sluggish for racing?

thanks for your advice

Rapide front wheel is very wide. For Contis, which run true to size, I would not run a tyre narrower than 28mm on it - you get too little tyre and too much wheel rim poking out. I'd have worries about damaging the rim lip in potholes. It's also probably not the most aero efficient set up given the width of that wim. So 28/28 is your answer.

[Mocs123]

I'd also add that 25mm is almost too narrow (or really too high PSI) for tubeless - 28mm tires do so much better at tubeless in my opinion.

[bobones]

I'd also add that 25mm is almost too narrow (or really too high PSI) for tubeless - 28mm tires do so much better at tubeless in my opinion.

Got to disagree: I've been successfully running tubeless 25s since 2016. 80 psi is fine for Orange Seal. I've even run Corsa Speed TLRs at 90-95 tubeless and currently have 24mm and 26mm Vittoria Corsa Pro at 80 psi. Some punctures seal quickly and some don't (and some not at all), but I find the same is true for 28s and 30s at lower pressures.

Bottom line is road tubeless works when you use Orange Seal regular, Dynaplugs, and I'll throw in Fillmore valves for easy inflation and no clogging. Although I always carry a spare TPU tube and boot for big cuts.

[TobinHatesYou]

I’ve run 25mm tubeless tires at 100psi in certain races and for some PR attempts. Orange Seal handles most punctures fine, though yes on occasion you get one of those pinwheel fireworks shows with sealant. That happens at 70psi too with a large enough puncture.

[Nickldn]

Have been running GP5000S TR 25mm for about 1,000 miles at up to 97 psi and no lower than 85 psi.

I can confirm punctures have sealed with Effetto Mariposa. No issues with tyres blowing off hooked rims.

[TobinHatesYou]

Will 28/28 be to sluggish for racing?

No.

[robbosmans]

That’s the current tire with the pro’s run so no indeed

[joss]

Regular GP 5000 compared to the GP 5000s TR.
Both with TPU tubes.
Since the 5000s TS is heavier, would this tire be better agains puntures?

[ultimobici]

Regular GP 5000 compared to the GP 5000s TR.
Both with TPU tubes.
Since the 5000s TS is heavier, would this tire be better agains puntures?

Not necessarily as much of the extra weight is in the bead. More importantly the tubeless casing is likely to make for a harsh ride with tubes.


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[RoadDonk82]

Running 30mm S-TRs for about 1000km now. The reason I have chosen them is that my wheels are hookless and have 25 internal rim width (I was using the wheels on my now deccommisioned gravel bike, I wouldn't buy hokeless for road bike if I haven't already had them).
My thoughts:

1)They are exactly 30mm wide on my wide rim
2)They are very grippy, it's crazy how much cornering grip I get in comparison to S-Works Turbo 28mm I was running on my previous bike with the same wheels
3)I am running them with TPU tubes for now. I will run them tubeless once I am in a place where I ride my road bike more.
4)The tires are very easy to mount on my rims. Easily doable without tire levers.
5)I think they are quite comfortable. I run them at 4.3bar rear, 4.2bar front. I guess I could easily go lower once I set them tubeless.
6)Still thinking about ordering normal hooked wheels and running standard 28mm gp5000. I run tubless on all my and my gf's bikes (gravel and mtbs) but we travel quit a bit with our road bikes and we don't get many punctures so I just don't see the point. Especially that those tires are heavy, expensive and not easily available.

[macwatt]

I need your advice .

I'm finally jumping the tubeless bandwagon.
I've already decided that i will use Conti STR. But i'm in doubt wheter i should use 25mm/28mm combo or 28/28.

I'm mounting them on Roval Rapide CLX wheels.
I'm using them for racing in Belgium (and also training, but i prefer training om my race setup to build confidence).
im a 63kg rider fwiw.

Wil 25/28 be perfect for racing, but am i then risking more sidewall-slashes? Will 28/28 be to sluggish for racing?

thanks for your advice

Running GP5000 clinchers on Rapide CLX they measured 29mm @70 psi as suggested below I wouldn't run 25mm as it will leave front outside rim very exposed to potential damage.

I've used other tyres like Turbo cotton 26mm or Michelin Power Cup 25mm on the front they measure 28.5mm so not far off 28mm GP5000.

[harblhat]

Running 30mm S TR on Cannondale Hollowgram RSL50 wheels with 21mm internal width and 32mm external width. After 200km the measured width is 31.5mm.

[lemeneid]

The difference in speed is defnitely noticeable. Went from a pair of Vittoria Corsa Next TLR 28mm to the GP5000S TR in the same size, the tyres roll more freely when not pedaling, and hold speed better. But at the same time, you do feel the road more and the vibrations.

That said, on my first ride, despite being out of action for 3 weeks, set a new PR on the same route I do.

[TobinHatesYou]

Just swapped out my rear 28mm after 4800mi. There was one spot where I could start to see the casing threads underneath though the two wear indicator dots were still visible. A 25mm rear tire lasted 3800mi on mostly the same routes and season schedule.