Schwalbe Kojak first report
 

Well, first puncture, at least. Front wheel. Had to walk 1km home carrying the bike, and that's my first negative point about these tyres. Bacause of the thinness of the sidewall, I didn't feel the tyre would last wheeling the distance without damage - it was totally flat, by the way.

Are these the 349 Kojaks that you said you were going to pump up to 100psi (and some of us advised you not to because that would increase the likelihood of punctures)? See posts #10 & 12 on this thread.

I ran 35-406 Kojaks at 75-80/50-55psi for about a year, including some light off-road work, with no punctures.
https://cimg0.ibsrv.net/gimg/bikefor...911a45d933.jpg

I pump mine between 80-85 psi and still have had zero flats...8 months so far. I love the pinging sound when stuff shoots out from underneath, lol.

That sounds like half-a-snakebite to me, the two punctures you get against the rim from an under-inflated tube being squeezed between rim and tire-bead. Check the inner walls of your rim for some kind of burr catching on the tube. And don't ride Kojaks at 55psi, no matter what anybody tells you. That's not enough air for that tire.

Line up the hole/patch with the rim. Check for shifting/damaged tape/strip.
Mostly use Kojaks/Primo comets over the years. Yeah; gets easier to flat
when it gets thinner after some miles/months have gone by. But after trying
Marathons, M Plus, OEM Brompton; still like Kojaks. :)

Snakebite at 80-100psi?
 

Right.

You cannot compare the Kojak in 35/406 with the one in 32/349 - they behave differently (as does again the version in 35/507). The 35/507 is pretty good at relatively low pressure and I've heard the same thing about the 406 version. The 349-version however runs as well as chewing gum at low pressure and is very sensitive to punctures (ordinary ones as well as snakebites) and you are even in danger of damaging your rim at that low pressure. At or above 100 PSI it runs like hell and suffers far less from punctures, judging from my experience.

I am running the Kojak in 349 on one of my Bromptons - my daily driver when there's no snow or ice on the streets - for serveral years now and the same pair for a couple of 1000 kms. They clearly had more punctures than the Marathons on another Brompton (the Marathons had none at all) - not really a surprise. But a single person's experience has no statistical relevance. I.e. last year I had two punctures with the Kojak on the same day within less than two hours and maybe 30kms. Since then - more than a year - I did not have a single puncture (if i remember correctly). Still the same Kojaks, always at 100PSI or more. Now they are getting old and are having a lot of cuts, at the rear wheel I even have a part of the thread missing (filled the missing bit with rubber glue). Maybe tomorrow I'll have another puncture, maybe not. It has more to do with Karma than anything else if you do not ride on very bad surfaces with a lot of rocks, broken glass or pieces of wire.
If I have a puncture with the Kojak usually it is not a big deal: Most of the time I carry a spare tube with me and just swap the tube instead of patching (this will happen later at home or at the hotel). A flat on the front wheel is fixed in less than 10 mins this way, on the rear wheel it takes a couple of mins longer, as I do not need tire levers with the Brompton. With the Brompton Kevelar the same procedure takes much longer and with the Marathon it takes forever, so this needs to be really puncture resistant...

Perhaps you are right. Yet another reason to avoid 349 in favor of 305, 355, 406...

Only if you are too lazy to pump up to high pressure. I love the 349-Kojak and prefer it to other tires as it runs far superior (and still comfortable) at high pressure. However, at low pressure the Kojak in 349 does not make sense - it runs in no way better if not worse than the alternatives then and ist more sensitive to punctures. Not a useful combination to me. So I run it at high pressure and are a happy camper. Why should I switch to another wheelsize (and thus to another bike)? Absolutely no reason for that. I own a proper pump... :)

Wtf is wrong with you? I said it sounds like half-a-snakebite, which accurately describes what a puncture from something on the rim would look like. Then I said to look for something on the rim. You either didn't read the full post, or chose not to understand it.

Yes, lazyness is all there is to it. That adequately explains my under-inflated 451 tires... The objective reality is that 349 has a limited set of tire offerings topping out at (what?) 37mm. 349 and their bikes have no true option (choice is good) of wider, lower pressure tires. This lazyness bit is a red-herring. You know it's not just about having a high pressure pump. I ride 451, but i don't fool myself that it's got far less tire selection and is less cushy than 406. I don't tell myself, oh, getting a good pump will make the ride smoother.

Whoops. Wrong thread, although I do have a Kojak. Who loves ya, baby!

"half-a-snakebite"
 

Ok...is that the same as 0.5-a-pinchflat?

It depends on the eye of the beholder.

yeah no. A snake bite is referring to a puncher caused by the rim crushing the tube against the ground due to too low pressure. So to be accurate half a snake bite would be one side of the rim bottoming out and damaging the tube. For you to be correct he needs to be striking the rim at 80psi.

Oh FFS. I used a term to help the OP visualize that his tube might be pushing against a burr on the rim, causing the puncture. Do you have any other advice for this person, or are we just going to keep going round and round about stupid sh**? Make a decision.

Took tyre and tube off just now. Nothing visible, and I went over rim and tyre with a fine tooth comb. Replaced the tube this time, inflated to 90 psi and am now waiting to see if the problem repeats.

As noted in a previous thread, I run tyres at manufacturer recommended pressures, so 100 psi all round when I'm convinced the front is OK - currently at 90.

How many different tires do you need? For 349 there are about 15 different tires available. I usually only need one at a time, but that one has to fit my needs. The Kojak does. Judging on a tire size and even more on a tire that you've never ridden is not a red herring but a dead herring. Judging on my needs though you are neither in my shoes nor know me nor the material involved is less than a dead herring's bone.
Btw: The widest 349 tire for the Brompton currently available has 40mm of width. More would not fit the Brompton anyway and even those 40mm are a challenge.

Just for future reference my vote is always for stupid sh** :p

Took tyre and tube off just now. Nothing visible, and I went over rim and tyre with a fine tooth comb. Replaced the tube this time, inflated to 90 psi and am now waiting to see if the problem repeats.

As noted in a previous thread, I run tyres at manufacturer recommended pressures, so 100 psi all round when I'm convinced the front is OK - currently at 90.

i was not questioning your preferences. I was objecting to your categorization as 'laziness' of my deep ambivalence about 349 wheels (on Brompton, Pakit, FnHon Gust, etc.), and their poverty of higher volume, lower pressure options.

Never buy a proper road bike, Abu. You'll find lots of different manufacturers make tyres, but you are limited to high pressure within a 700c 23-28 range.

Personally, I think the range for the bikes you mention is just fine. Remember, these aren't mega sellers like the road, VTT, electric or even hybrid options. Also, folding bikes have a rather specialized usage, and most owners will have a "normal" bike as their daily ride.

All of which is off topic. Tyre did the supermarket run without problems, so increasing to 100 psi shortly.

I hear ya. No road bike for me, but I am fixin' to build a monster-cross light tourer on a SOMA Double Cross Disc 2017 that takes up to 700x45c meat like this...
https://cimg8.ibsrv.net/gimg/bikefor...fe76e982b5.jpg
Got the wheels with 35mm Schwalbe Marathon Supreme (folding) for it already...
https://cimg7.ibsrv.net/gimg/bikefor...4a39a49777.jpg


I ride 37-451 tires on one of my folders at 70/50psi. At times the ride can still be jarring. I shudder at the thought of 32-349 at 100psi. This, from one who used to MTB sans suspension at one point.