Does Michelin still make the Pro4 Endurance?

[rothwem]

Originally Posted by .RJ

the old version of the all season were very durable, i used to use those or paves in the winter.

those are tubeless ready, i wouldnt use those unless you have tubeless rims, even running tubes, or else they'll likely be a bear to mount.

I've got tubeless rims. My big issue is actually tire clearance, this is going on an older CAAD8 USA frameset, so a true 28mm WAM is about all I can fit in there. I've got modern(ish) wheels on there with 19mm internal width, so I'm thinking that a 25mm is really all I'm going to be able to get on there. 27mm Pave's (which ran small) maxed out clearance. They fit, but just barely.

Originally Posted by 54ny77

the issue wasn't mounting (i've honestly never had a problem with mounting tires of any brand, and yeah some are a little more finicky than others). the main issue is max psi on tr ready tires is a good 20lb lower than what i prefer to run.

Hm, interesting, never realized the pressures were so much lower. Looks like the 25's go to 109psi, which is way more than I need, even at my 205 pound weight, I'm running 80F/85R right now with 25s that are actually 28 on my rims.

[54ny77]

yeah i didn't know about it until i had ordered a handful of vittoria corsa-something and conti 5000 tr's for both road and tandem and tr tires are very specific on pressures. conti website shows it taps out around 70 or so. no way i'm running 70 on a tandem, for example.

conti tr tire max pressures here: https://www.continental-tires.com/pr...s-hooked-rims/

Originally Posted by rothwem

I've got tubeless rims. My big issue is actually tire clearance, this is going on an older CAAD8 USA frameset, so a true 28mm WAM is about all I can fit in there. I've got modern(ish) wheels on there with 19mm internal width, so I'm thinking that a 25mm is really all I'm going to be able to get on there. 27mm Pave's (which ran small) maxed out clearance. They fit, but just barely.



Hm, interesting, never realized the pressures were so much lower. Looks like the 25's go to 109psi, which is way more than I need, even at my 205 pound weight, I'm running 80F/85R right now with 25s that are actually 28 on my rims.

[eddief]

there is now both a 4 Seasons and an All Seasons version. This is a new model as discussed here:
https://www.bicyclerollingresistance...rix-5000-as-tr

and here:
https://bicyclerollingresistance.com...-5000-as-tr-35

I don't care about wet grip here in CA. I just think they're damn good tires.

Their conclusion about the 35mm model:

The 35 mm version of the Grand Prix 5000 All Season sets a new record in our wet grip test and even outperforms the best-performing touring bike tires in this test. The 25 mm version of the Grand Prix 5000 All Season already performed very strongly in our wet grip test, but the 35 mm version steps this up a few notches and offers an additional 15% of wet grip in our test.


The 15% increase in wet grip is quite significant, and we normally do not see differences this big between different sizes of the same tire. A possible explanation might be in the compound, as a bigger tire allows for a softer compound due to the lower contact pressure per square mm/inch of contact area.


What's also different between the 25 and 35 mm versions of the Grand Prix 5000 All Season is the tread thickness as we've measured the total tire thickness of the 25 mm version at 2.5 mm while the 35 mm version comes in at a thickness of 3.2 mm. The thicker tread also results in an increase in our puncture resistance test, where the 25 mm scores 43 points, and the 35 mm version moves this up to 54 points, making it more suitable for gravel or touring bike use.


Given that the Grand Prix 5000 All Season is available in the 25, 28, 32, and 35 mm sizes, it makes us curious whether they come closer to the performance of the 25 mm or 35 mm sizes. We'll probably get those tested as well, but it's up to our Pro Members to decide which tires get tested.


Suppose you're looking for a fast tubeless-ready gravel bike or touring bike tire that offers exceptional wet grip, decent puncture resistance, and solid sidewalls. In that case, the 35 mm version of the Grand Prix 5000 All Season is far ahead of the competition.

Originally Posted by .RJ

the old version of the all season were very durable, i used to use those or paves in the winter.

those are tubeless ready, i wouldnt use those unless you have tubeless rims, even running tubes, or else they'll likely be a bear to mount.

[Talrand]

Originally Posted by 54ny77

yeah i didn't know about it until i had ordered a handful of vittoria corsa-something and conti 5000 tr's for both road and tandem and tr tires are very specific on pressures. conti website shows it taps out around 70 or so. no way i'm running 70 on a tandem, for example.

conti tr tire max pressures here: https://www.continental-tires.com/pr...s-hooked-rims/

Are you sure you didn't look at hookless rating? Tubeless 28mm GP5ks seem to be rated to 94 psi when used on hooked rims.

[.RJ]

Originally Posted by Talrand

Are you sure you didn't look at hookless rating? Tubeless 28mm GP5ks seem to be rated to 94 psi when used on hooked rims.

FWIW, I'm using Vittoria pro control 32mm on tubeless rims (but with tubes) at ~55-60psi and there's not much reason to go higher. I've tried everything from 50-80psi on these. I would guess a GP5k is similar.

[54ny77]

where is that found? can't see on website.

i typically run around 90 psi on my rims, which are all older clinchers and narrow width.

Originally Posted by Talrand

Are you sure you didn't look at hookless rating? Tubeless 28mm GP5ks seem to be rated to 94 psi when used on hooked rims.