On Monday, October 30, 2017 at 12:17:39 PM UTC-7, Joerg wrote:
On 2017-10-30 12:14, Doug Landau wrote:
On Thursday, October 26, 2017 at 4:39:17 PM UTC-7, Joerg wrote:
On 2017-10-26 15:50, wrote:
On Thursday, October 26, 2017 at 10:51:28 AM UTC-7, Joerg wrote:
On 2017-10-26 09:56, Frank Krygowski wrote:
On 10/26/2017 10:24 AM, wrote:
On Wednesday, October 25, 2017 at 2:27:58 AM UTC+2,
jbeattie wrote:
On Tuesday, October 24, 2017 at 3:50:31 PM UTC-7,
wrote:
I picked up a piece of glass today and got a flat on my
third ride on this tire. I didn't get any flats on the
Pro4 Endurance though some people say that they cut
easily.

The Pro4 Endurance tire rolled really easily -
something that the Power Endurance doesn't seem to do.
Though that could simply be personal opinion.

I'm selling a set of wheels and they have Specialized
Armadillos on them. They did not have more than
possibly 500 miles on them and showed a lot of wear.
While looking at them one of them had a real long cut
but still no flat. These are VERY expensive tires.

But the flat I got today I'm sure I would not have
gotten on a Continental Gatorskin.

So it appears that Continental is still the uncontested
king of flat-proof tires.

That's disappointing to hear. I don't think my Pro4
Endurance are that tough, but they are certainly more
flat-proof than Pro4 Service Course. The version II of
the Pro4 Endurance supposedly had lower rolling
resistance than version I of the Service Course. The
Endurance was a pretty fast tire. You have to wonder why
they fooled with it. I don't think Gatorskins or
4Seasons have changed in ten years. Conti has not seen a
need to constantly fiddle with them, although like Joerg
said, they might want to re-think the sidewalls.

I hope not if it means increasing rolling resistance. If
you don't want flats or side wall cuts in case you hit a
rock use Schwalbe marathon plus tires and accept the weight
penalty and increase in rolling resistance instead of
demanding sturdier side walls of high performance tires.

The worry about sidewall cuts surprises me. I get them so
seldom they're not even a concern. That's despite regular
brief excursions on gravel, using Paselas, or Gatorskins, or
Schwalbe Marathons, depending on the bike.

Long ago I had some sidewall bubbles (not cuts) in
Continental touring tires, but I think that's a different
problem entirely.


https://www.youtube.com/watch?v=x7VR3jdwZ3k
https://www.youtube.com/watch?v=1vOQQISgIjs
https://www.youtube.com/watch?v=GEUYW7LNgw4

Some of their other series seem to have side wall blows as
well:

https://www.youtube.com/watch?v=NiPBo0hdrvA

I ride Market St. or 3rd or others with heavy train tracks. I
ride over the local Alameda bridges and they are all steel
gratings. I ride over the steel plates thrown over the top of
excavations. And I've never had a sidewall blowout on a
Gatorskin. Though I have on the less expensive tires.

I'm wondering if you over or under inflate your tires a large
amount.


I inflate to around 105psi and don't let them drop lower than
75psi. A road bike tire is supposed to be able to live with that.

When I started road cycling the nice guy at my LBS who was mentoring
me expressed surprise that I was not yet pumping up my tires every
day, ...


There you can see how much cyclists have gotten used to sub-par gear.
Can you imagine having to pump up the tires of your car every few days?


and then appeared alarmed at my response, and said emphatically
"Below 80 they can roll off in a corner!!!"


They don't. Also, ever since I switched to thick tubes it takes 6-8
weeks to drop to 75psi.

I can't remember rolling a tire off unless the pressure was reduced to near nothing by a flat. I'm sure that you could roll a tubular off at lower pressures so that might be where that myth came from.