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Grand Prix 5000TL for Giant SLR 1 Areo 42/65 mm?

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  • March 26, 2019 at 11:36 pm #29465
    Vovis

    Hi guys, 

    I am new with tubeless and would to kindly ask for opinions.   

    Considering Conti 5000TL for my Giant SLR 1 Aero 42/65 set on Propel Advance Disk 2018.

    5000TL are new, therefore not so many reviews.

    Bicyclerollingresistance reported very low rolling resistance and high puncture resistance. So far good but weight of new 5000TL is a bit on higher level

    – 300g (25 mm version) + 40 ml sealant will make it about 340g .

     -340g (28 mm version) + 40 ml sealant sounds already pretty heavy for rotational weight .. but it would be nice for comfortable rides on our not always excellent roads and downhills.  Can’t say if 28 will be still ok on 17/23 mm rims.  

    Considering 25/28 mm  front/rear. 25 – better control, still good aero; 28 – more comfort.

    Why Conti?  It is more all rounder. Additionally trust Vectran. Maybe I was just lucky but on my previous Grand Prix 4000 S II had no single puncture for few thousands km.  

    Some users reported pretty hard times while insltalling new 5000TL where compressor was needed..   No one reporrted how easy it is to take them off the rim… just in case that installation of tube might be necessary or cleaning from dryed sealant next season. 

    Pro One Tubeless, on the other side, are lighter, however, some users reported more than avarage leakage, quick wearing and therefore faster puncture issues. 

    Thinking about Bontraeger TLR sealant. 

    Original Orange and Stan’s Race sealants have probably better sealing quality but both dry pretty quickly. 

    Any thoughts?

     

     

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  • March 28, 2019 at 3:02 pm #938317
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    fukawitribe
    Vovis wrote:
    @ fukawitribe

    this is valid for regular GP5000.

    TL version is wider, at leaset this holds for 25 mm version as shown here:

    Ach – mea culpa – completely forgot we were talking about TL versions.

    March 28, 2019 at 2:38 pm #938315
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    Vovis

    @ fukawitribe

    @ fukawitribe

    this is valid for regular GP5000.

    TL version is wider, at leaset this holds for 25 mm version as shown here:

    https://www.bicyclerollingresistance.com/road-bike-reviews/continental-grand-prix-5000-tl-2018

    “Size. The regular 25-622 GP 5000 came in at 26 mm wide on a 17C rim, at an air pressure of 100 psi / 6.9 bars. The GP 5000 TL measures a bit wider at 27 mm wide and has a height of 24 mm. (full info: the regular GP 5000 was 26.2 mm, the GP 5000 TL came in at 26.8 mm so not a full mm wider.)”

    That is why I am assuming that nominally 28 mm version will be also wider.

     

    March 28, 2019 at 2:21 pm #938313
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    fukawitribe
    Vovis wrote:
    I assume that new 28 mm GP5000TL will be effectively ~29-30 mm. This means +6 mm to external width of my rim 23 mm.  Probably behaviour of such combination is not ideal compared to 25 mm version (effectively 27 mm).  Also Propel Advance Disk 2018 frame is specified for 28 mm (MAX), therefore I am not sure about left clearance.

    Continental appear to have finally sorted their hilarious tyre width measurements, and the GP5000s look ~pretty much on spec, at least a lot closer than the GP4000s, e.g.

    https://www.bicyclerollingresistance.com/specials/grand-prix-5000-comparison#sizeweight

     

     

    March 28, 2019 at 12:58 pm #938311
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    Vovis

    I assume that new 28 mm

    I assume that new 28 mm GP5000TL will be effectively ~29-30 mm. This means +6 mm to external width of my rim 23 mm.  Probably behaviour of such combination is not ideal compared to 25 mm version (effectively 27 mm).  Also Propel Advance Disk 2018 frame is specified for 28 mm (MAX), therefore I am not sure about left clearance.

    March 28, 2019 at 12:49 pm #938309
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    Vovis
    Simon E wrote:
    You don’t usually need a different tube for 28mm, an 18-25mm tube will just be a tiny bit thinner as it stretches to fit the slightly larger volume.

    If you don’t believe me try putting some air in a spare tube and see how big it gets. 🙂

    I believe you, should be ok for getting home, maybe not permanent usage 🙂

    March 28, 2019 at 12:47 pm #938307
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    Vovis
    peted76 wrote:
    I’ve tried Stans, Conti Revo, Bontrager and Orange Seal. Bontrager is the one which works for me best. Stans was the worst, just useless at high pressures, I just feel like I’ve done enough guinea pig testing for me not to want to ‘risk’ using their newer race version, Bontrager works great and goes through the valve, you just need to shake the hell out of the bottle every time you top up.

    You convinced me. Going to start with Bontrager TLR 🙂

    March 28, 2019 at 12:41 pm #938305
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    Simon E

    You shouldn’t need a

    You don’t usually need a different tube for 28mm, an 18-25mm tube will just be a tiny bit thinner as it stretches to fit the slightly larger volume.

    If you don’t believe me try putting some air in a spare tube and see how big it gets. 🙂

    March 28, 2019 at 12:33 pm #938303
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    peted76

    I’ve tried Stans, Conti Revo,

    I’ve tried Stans, Conti Revo, Bontrager and Orange Seal. Bontrager is the one which works for me best. Stans was the worst, just useless at high pressures, I just feel like I’ve done enough guinea pig testing for me not to want to ‘risk’ using their newer race version, Bontrager works great and goes through the valve, you just need to shake the hell out of the bottle every time you top up.

    March 28, 2019 at 11:26 am #938301
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    Vovis

    @ peted76,

    @ peted76,

    thank you for your suggestions.

    I was intitially thinking about  Bontraeger TLR sealant then found some very good reviews on newer Stan’s NoTubes Race. They say Race Stans has bigger crystals and seals larger puncures much faster.  On negative side they don’t reccomend to put in through valve (that will be my preferable way).

    On the other side, Bontraeger tends to dissociate with time into few components and, as I understood from forum discussions, shaking of the sealant doesn’t help, it’s irreversable.

    However, as I said, I am new to TL.

    Why don’t you suggest stans?

    March 28, 2019 at 11:16 am #938299
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    peted76

    Don’t use stans sealant. I

    Don’t use stans sealant. I prefer the Bontrager sealant it just works best at higher pressures.

    You don’t need 40ml sealant, I use 25ml with no problems. 

    25mm tyres would be normal, I use Schwalbe Pro Ones and can’t justify swapping to another brand, I’ve looked at the Conti’s and the rolling resistance is tempting, but the additional weight is offputting, on balance I might try a set next time I need to change tyres but I can’t see it making much difference. I’ve got nothing but good things to say about the Schwalbes, I’ve gone through about eight tyres since I started running tubeless in 2015. 

     

    March 28, 2019 at 11:11 am #938297
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    Vovis

    Thank you guys for sharing of

    Thank you guys for sharing of your knowledge and aslo valuable suggestions!

    I think I will go for 25/25 to get first experience, lower pressure for TL compared to my current regular Grand Prix 5000 (25 mm) will already make them more comfortable to ride.  Additionally, in case of puncture I plan to carry one spare tube and because tubes for 25/28 mm tyres are differnet, I need to carry only one 🙂

    March 28, 2019 at 9:16 am #938295
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    Simon E

    Buy the better size for your

    Buy the better size for your purpose and do some riding. When you need to replace them then you can consider whether to buy the same again or a different tyre.

    I wouldn’t sweat over the details – 40g weight difference or the aerodynamics of 25mm v 28mm – as any claimed differences will be so tiny as to be undetectable in the real world.

    March 27, 2019 at 6:08 pm #938293
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    Paul5f

    Hi. I’ve recently bought the

    Hi. I’ve recently bought the new GP5000 TL tyres for both my bikes. I used to use Shwalbe pro one tyres but they were very delicate and didn’t last very long so I went back to clinchers. Now Continental have released a tubeless tyre that’s similar to the old GP4000 I have gone back to tubeless. 

     

    Fitting the GP5000’s was quite easy on my aluminium wheels but difficult on my Bontrager carbon wheels (really really difficult to get on the rim). Both sets of tyres pumped up very easily with my cheap and not very good track pump. 

     

    So far I’ve ridden over 350 miles on them. They feel better than clinchers but dont don’t feel as good as the Shwalbe pro ones, maybe less supple, but if they are as puncture resistant, long lasting and reliable as the GP4000’s while offering me the benefits of tubeless I’ll be very happy. I can’t really comment on the weight as I don’t weigh my tyres and I’ll happily carry a few more grams for a better all round tyre otherwise I’d still be riding Shwalbe Pro One’s.

     

    Ive no idea which sealant is better. I use Stans but whenever I had a puncture with Shwalbe Pro One’s it’s because a small flint got stuck in the tyre and it wouldn’t seal until I removed the flint by which time all the air was gone to the tyre wouldn’t seal anyway.

     

     

     

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