NEW GP5000S TR

[BespokeTrailMix]

I'm in the process of collecting parts to put together an all-road build and want to run the GP5K S TR in 30mm on my 25i/32e width rims. The 30mm version of this tire seems to be out of stock almost everywhere, so they're becoming more difficult to come by, but I was able to snag one on eBay that arrived a few days ago. I was a little surprised to see it come in at 313g. That's 10+ g heavier than others have posted, and 19g heavier than Bicycle Rolling Resistance measured. Hoping the next one I find comes in a little lighter!

Also, it took me forever to find the tire size listed on the casing. I assume the tiny black lettering is the status quo on this tire? Forgive me for being a bit paranoid any time I purchase something from eBay.

[BBres]

Any experience here after switching from 28 mm to 30 mm GP 5000 S TR? Pros and cons?

My wheels: Roval Rapide CLX II. Thinking of gettin 30s when my 28s wear out. Is that a good idea for racing or should I stay with 28?

[req110]

i switched from 28mm to 30mm gp 5000 S TR, both transparent wall.
All on roval rapide clx II.

28mm were measuring 29.5mm
30mm measure 30.6mm after one and half days and 50km.

I am fine with them.

[BBres]

what are your impressions? Which set do you find better?

[Mocs123]

What are peoples experiance with the GP 5000 TT TR? How many miles are you getting on them? How prone are they to punctures.?

[req110]

what are your impressions? Which set do you find better?

I am fine so far. Bit of comfort. Handling ok.
If i had to decide between 28 and 30, i would purchase 30 again.

[BigBoyND]

Has it been figured out why the transparent tire tested so much slower on BRR? It tested later. So did the compound change to a slower one, or is the casing different? Pretty much every reference to BRR and how fast the S TR is, conveniently points to the faster of two tests.

[windscreen]

What are peoples experiance with the GP 5000 TT TR? How many miles are you getting on them? How prone are they to punctures.?

Over 2150 k on my 28 mm TT-TR so far, and no punctures or notable wear. Where I ride, out in the country, punctures have been pretty rare, however (knock on wood!). I put over 5700 k on a set of S-TR with no punctures, either.

-Steve

[Mocs123]

What are peoples experiance with the GP 5000 TT TR? How many miles are you getting on them? How prone are they to punctures.?

Over 2150 k on my 28 mm TT-TR so far, and no punctures or notable wear. Where I ride, out in the country, punctures have been pretty rare, however (knock on wood!). I put over 5700 k on a set of S-TR with no punctures, either.

-Steve

Thanks for sharing. I'm considering trying them when my current tires wear out - or I may go with the regular GP5K with latex tubes. Of course I need all the speed help I can get!

[Mocs123]

Has it been figured out why the transparent tire tested so much slower on BRR? It tested later. So did the compound change to a slower one, or is the casing different? Pretty much every reference to BRR and how fast the S TR is, conveniently points to the faster of two tests.

I found this odd too as I'm pretty sure the "tan wall" GP5KS-TR's have the tan wall painted or printed on and the rest of the tire is the same. That's not the case with the tube type GP5K's where the transparent tire has a different sidewall rubber compound.

[gurk700]

For how much % difference in weight I personally see between exact same model / size of tire, I suspect producing tires aren't 100% consistent.
For that reason, I wouldn't be shocked if BRR tests happen to be different for the tan vs black version. I feel like that difference might even be observed between same size, same sidewall color tire as well.

[tonytourist]

I had a defective Continental GP 5000 S TR 32 that caused my rim to drop tension all over the place causing an insane wobble. Swapped tire, everything is perfect. I'm an idiot and rode it like that for a ride
https://imgur.com/QTUJ8Ks

[Mocs123]

For how much % difference in weight I personally see between exact same model / size of tire, I suspect producing tires aren't 100% consistent.
For that reason, I wouldn't be shocked if BRR tests happen to be different for the tan vs black version. I feel like that difference might even be observed between same size, same sidewall color tire as well.

The tanwall was 3g lighter in the BRR test (255g vs 252g) and 1mm narrower (25mm measured vs. 26mm measured). Certainly 3g is normal manufacturing variance - I'm not sure about the 1mm difference in width.

[BigBoyND]

For how much % difference in weight I personally see between exact same model / size of tire, I suspect producing tires aren't 100% consistent.
For that reason, I wouldn't be shocked if BRR tests happen to be different for the tan vs black version. I feel like that difference might even be observed between same size, same sidewall color tire as well.

The tanwall was 3g lighter in the BRR test (255g vs 252g) and 1mm narrower (25mm measured vs. 26mm measured). Certainly 3g is normal manufacturing variance - I'm not sure about the 1mm difference in width.

If you're rounding to the nearest integer, then "25" vs "26" can be 0.1 apart or 1.9 apart

The sizes on BRR are 24.9mm and 25.5mm. So just 0.6mm, which is within variance. I measure my tires in multiple places and different spots on the same tire can vary by that amount.

[gurk700]

For how much % difference in weight I personally see between exact same model / size of tire, I suspect producing tires aren't 100% consistent.
For that reason, I wouldn't be shocked if BRR tests happen to be different for the tan vs black version. I feel like that difference might even be observed between same size, same sidewall color tire as well.

The tanwall was 3g lighter in the BRR test (255g vs 252g) and 1mm narrower (25mm measured vs. 26mm measured). Certainly 3g is normal manufacturing variance - I'm not sure about the 1mm difference in width.

There's more to rolling resistance than width and weight. What I meant was if they are as inconsistent producing tires that are so apart in weight i'm sure they do other stuff that is inconsistent enough to make them 1-2 watt better or worse in a BRR test.

Let's not forget whatever % inaccuracy that may come from the BRR test too. it's not like they are 100% accurate.

So it would make sense that it all adds up to 1 or 2 watt difference.

I'm surprised when people take all the aero, chain efficiency, rolling resistance, etc tests as 100% accurate. They are not. They can't be. It's just a good starting point. Chances are top 3-5 of whatever they are testing is indeed the top 5 but the order of them might be not so clear cut.

All that to say, I'm pretty sure color of a tire doesn't change rolling resistance and if BRR tested enough all black tires in the same size they would end up a watt or 2 different as well like the tan one.