GoodYear Eagle F1 SuperSport Road TIres

[TobinHatesYou]

Is there any rolling resistance numbers by an independant party on these tires?

Aerocoach tested them. Their Crr is on par with pretty much every other fast tire not named GP5K and not geared toward TTs.

[Yoln]

Is there any rolling resistance numbers by an independant party on these tires?

Aerocoach tested them. Their Crr is on par with pretty much every other fast tire not named GP5K and not geared toward TTs.

Thank you, found it!



So basically 5w slower at 45km/h than Vitoria-Corsa, GP5k and Turbo Cotton, and 10W slower than Corsa Speed? Hmmm... thank you but no thank you, I'll pass

[TobinHatesYou]

I’d need to be doing ~400W to maintain 45km/h so 3W total doesn’t bother me as long as the tires have better sidewalls than GP5Ks and better grip. I’m fairly certain I would lose more races due to GP5K punctures than the Crr differences in any popular race tire.

[Ypuh]

I just sent you a PM. As an aside, you'll be seeing them back in stock from the major online shops over the next 3 weeks.

Haven't received anything, but getting your point. Wait.

[benzebub]

too bad for the long wait in Europe, was willing to try these out too

[nismosr]

any one know where we could buy the TLR version ?

[nachetetm]

Is there any rolling resistance numbers by an independant party on these tires?

Aerocoach tested them. Their Crr is on par with pretty much every other fast tire not named GP5K and not geared toward TTs.

Thank you, found it!



So basically 5w slower at 45km/h than Vitoria-Corsa, GP5k and Turbo Cotton, and 10W slower than Corsa Speed? Hmmm... thank you but no thank you, I'll pass

Where do you see the 5W difference with the Contis? It's in the same W, and that's for both tires! Less than half W per tire can be considered the margin error. I would conclude that these Goodyears are very fast.

[Yoln]

Is there any rolling resistance numbers by an independant party on these tires?

Aerocoach tested them. Their Crr is on par with pretty much every other fast tire not named GP5K and not geared toward TTs.

Thank you, found it!



So basically 5w slower at 45km/h than Vitoria-Corsa, GP5k and Turbo Cotton, and 10W slower than Corsa Speed? Hmmm... thank you but no thank you, I'll pass

Where do you see the 5W difference with the Contis? It's in the same W, and that's for both tires! Less than half W per tire can be considered the margin error. I would conclude that these Goodyears are very fast.

You're comparing 23mm and 25mm ...

Conti GP5k C 25mm are 27w, GY are 30w.

I was comparing them to Specialized-Turbo-Cotton, Vitoria Corsa (not in this chart but generally in between Cotton and GP5) and GP5, which are all in the 25-27w CRR range, and generally considered roughly CRR equivalent in several other tests.

So yes, basically:

- Good Year -> 30w CRR
- Fast Race tires -> ~25-27w (GP5k, Vitt-Corsa, Turbo-Cotton)
- Faster Race tires with TT profile -> ~21-23w

We can all argue that "9w is not that much at 45kmh", that's true, but that also basically what you'd save by moving from butyl to latex tubes for example. To me that's small, but still significant enough to care about

[TobinHatesYou]

Vittoria Corsas are slower than GP5Ks, Yoln.

[Junior Varsity]

any one know where we could buy the TLR version ?

TLR doesn't exist at the moment. However, I would keep watching HERE and following us on IG at https://www.instagram.com/goodyearbike/ over the next month and a half as you never know what may happen.

[robertg]

I'm very interested in these tires. I am presently running GP5K clinchers in 25mm. May need to replace them soon and these are at the top of my list.

[AMGRoadster]

Looks like an average "super tire". That said after my experience with the GP5K that can't be any worse. The GP5Ks are crap. No wet grip and way more flats than I have had with any tire. They are a downgrade on the GP4K.

[Yoln]

Vittoria Corsas are slower than GP5Ks, Yoln.

Right, but isn't it supposed to be faster than Turbo Cotton as well? I'm lost...

Bicyclerollingresistance.com says GP5k>Corsa>Turbo-Cotton

But here Cottons are better than GP5k...

[nachetetm]

Vittoria Corsas are slower than GP5Ks, Yoln.

Right, but isn't it supposed to be faster than Turbo Cotton as well? I'm lost...

Bicyclerollingresistance.com says GP5k>Corsa>Turbo-Cotton

But here Cottons are better than GP5k...

I would take that as a proof that rolling resistance is surface and condition-dependent, and do not worry much about a couple of watts. There's nothing slower than stopping to fix a puncture.

[Junior Varsity]

Vittoria Corsas are slower than GP5Ks, Yoln.

Right, but isn't it supposed to be faster than Turbo Cotton as well? I'm lost...

Bicyclerollingresistance.com says GP5k>Corsa>Turbo-Cotton

But here Cottons are better than GP5k...

I would take that as a proof that rolling resistance is surface and condition-dependent, and do not worry much about a couple of watts. There's nothing slower than stopping to fix a puncture.

There are so many variables that make force ranking by 'how fast a tire is’ extremely difficult, if not impossible. Many aspects are relative to another and thus optimizing a tire’s performance is a matter of selecting conditions and establishing a baseline for which to measure improvements given the selected definition of performance. Is performance a low Crr, comfortable ride, puncture protection, air retention, wet grip, dry grip, tread life….? We all know it's a combination of many factors but determining the weighting is key.

As an example, a 25-622 (700x25) clincher (c) tire developed using a design (measuring) inner rim width of 19mm will perform differently when tested on a 17mm or 21mm inner rim due to changes in its profile. Now consider balancing that rolling resistance with puncture protection at center, off center by X number millimeters, sidewall strength and you can see how complicated tire development can be.