NEW GP5000S TR

[windscreen]

I just ordered a pair of black wall 28s from Lordgun. It makes me shake my head that I can get tires delivered from Italy to the USA cheaper than I can find them from any US supplier.

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[abatty]

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Me riding 25mm versions on the winter bike last weekend. First puncture sealed nicely. Been very impressed with the performance of these tyres on 200mi of wet, flinty, potholed 'tarmac'.

[justRideIt]

I ordered two 30mm GP 5000 S TR from bike24, priced at 69,99€ each.

One weighed 300g, the other 304g.
Yes, I have removed the paper instructions inside the folded tires, but not the plastic band (you can subtract 0.7g for that ).

Mounted them on Roval CLX 50 wheels going onto Tarmac SL6.
Not the easiest tires to put on (had to use tire levers cautiously, although I used the inner channel). Once both beads were seated on the inner channel, the tires inflated easily, even with valve core installed. I used a compressor, but I guess it would've inflated with a standard track pump.
They now hold air well (even without sealant).

Width measures 30.4mm front and rear, inflated at 75 PSI. Guess they'll stretch a little over the next few days.

The former non-tubeless GP 5000 in 28mm measured 29.6mm on those Roval CLX 50.
So the new "S TR" are more true to labeled size.

Last season, I had two flats with "old" GP 5000 + Latex tubes, both happened on relatively smooth gravel sections and both from sidewall impacts.
Hopefully, the wider 30mm in tubeless will be more reliable for some smooth offroad sections

[Discodan]

I don't normally give much credit to bikeradar technical integrity but this is an interesting data point based on some half decent back to back testing between the TL and TR https://www.bikeradar.com/reviews/conti ... tr-review/ . In summary they are seeing a 7w saving under their test protocols which is better than BRR's difference but certainly not the mythic 20% savings

[TobinHatesYou]

I don't normally give much credit to bikeradar technical integrity but this is an interesting data point based on some half decent back to back testing between the TL and TR https://www.bikeradar.com/reviews/conti ... tr-review/ . In summary they are seeing a 7w saving under their test protocols which is better than BRR's difference but certainly not the mythic 20% savings

According to BikeRadar, the GP5K S TR required more power to hold 45km/h than the GP5K TL.

[Mrmamil]

I ordered two 30mm GP 5000 S TR from bike24, priced at 69,99€ each.

One weighed 300g, the other 304g.
Yes, I have removed the paper instructions inside the folded tires, but not the plastic band (you can subtract 0.7g for that ).

Mounted them on Roval CLX 50 wheels going onto Tarmac SL6.
Not the easiest tires to put on (had to use tire levers cautiously, although I used the inner channel). Once both beads were seated on the inner channel, the tires inflated easily, even with valve core installed. I used a compressor, but I guess it would've inflated with a standard track pump.
They now hold air well (even without sealant).

Width measures 30.4mm front and rear, inflated at 75 PSI. Guess they'll stretch a little over the next few days.

The former non-tubeless GP 5000 in 28mm measured 29.6mm on those Roval CLX 50.
So the new "S TR" are more true to labeled size.

Last season, I had two flats with "old" GP 5000 + Latex tubes, both happened on relatively smooth gravel sections and both from sidewall impacts.
Hopefully, the wider 30mm in tubeless will be more reliable for some smooth offroad sections

Can you please share some photos of the tires on the CLX50? I want to have a feel of the 'bulb' effect of the 30mm tires. I have a pair of 30mm and plan to use them on the 303FC.

[ryanw]

I don't normally give much credit to bikeradar technical integrity but this is an interesting data point based on some half decent back to back testing between the TL and TR https://www.bikeradar.com/reviews/conti ... tr-review/ . In summary they are seeing a 7w saving under their test protocols which is better than BRR's difference but certainly not the mythic 20% savings

According to BikeRadar, the GP5K S TR required more power to hold 45km/h than the GP5K TL.

In the flavour of 8w which is actually pretty significant at 45kph.

[Mocs123]

Don't you wish Continental would release thier data on how they came up with 20% faster than the TL? I mean I don't think they would just make that up - maybe embelish a little but they wouldn't have said they were faster if they were slower in their tests.

[justRideIt]

Can you please share some photos of the tires on the CLX50? I want to have a feel of the 'bulb' effect of the 30mm tires. I have a pair of 30mm and plan to use them on the 303FC.

Here you go Mrmamil.
30mm tire mounted on Roval CLX 50.
Inflated to 60 PSI, measures 30.4mm wide.

The tires have been sitting on the rim without sealant since five days and were still well inflated, lost only a couple PSI. So they seem to hold air quite well.

Optically, there definitely is the "bulb" effect you speak of.
Tire comes out much wider than the 105% rule suggests, and definitely does not look as "sleek" and aero as say a 25mm.

For me personally, as a non-racer, I do not mind these optics nor any loss in performance.
Priority #1 to me is the added comfort of running lower tire pressures.

[kode54]

That looks pretty nice!

[tritiltheend]

I don't normally give much credit to bikeradar technical integrity but this is an interesting data point based on some half decent back to back testing between the TL and TR https://www.bikeradar.com/reviews/conti ... tr-review/ . In summary they are seeing a 7w saving under their test protocols which is better than BRR's difference but certainly not the mythic 20% savings

Roller testing can give good results but it requires very careful attention to protocol. The red flag for me is that the TL tire was "lightly used", tires should either be new or have the exact same amount of wear for comparisons to be valid. I've seen data showing that rolling resistance can drop noticeably with a new tire during early miles, then stabilizes once the tire is "broken in". Personally, I think the testing by BRR and Aerocoach has more credibility.

[kervelo]

How do you find the puncture protection of the new TR so far? Would you choose the tyre for your rainy day road bike?

[Mocs123]

I picked up a couple of these in 700x25 at my local shop and they came in at 244g and 250g with the shipping strap still attached. It's odd they would be six grams differnt since they were undoubtedly from the same batch. I plan on putting them on my race bike this spring.

[bobones]

How do you find the puncture protection of the new TR so far? Would you choose the tyre for your rainy day road bike?

I've been riding black 25s on my winter bike for a good while now,and they're holding up fine. I got a couple of punctures from thorns in the first few days that sealed no problem, but nothing since, and they've seen a lot of wet, gritty roads in that time. I think they work well in any weather.

[alanyu]

I don't normally give much credit to bikeradar technical integrity but this is an interesting data point based on some half decent back to back testing between the TL and TR https://www.bikeradar.com/reviews/conti ... tr-review/ . In summary they are seeing a 7w saving under their test protocols which is better than BRR's difference but certainly not the mythic 20% savings

Roller testing can give good results but it requires very careful attention to protocol. The red flag for me is that the TL tire was "lightly used", tires should either be new or have the exact same amount of wear for comparisons to be valid. I've seen data showing that rolling resistance can drop noticeably with a new tire during early miles, then stabilizes once the tire is "broken in". Personally, I think the testing by BRR and Aerocoach has more credibility.

This ia not true on GP5K TL, which goes aging from mile 1, tested by BRR.