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Folding Bikes Discuss the unique features and issues of folding bikes. Also a great place to learn what folding bike will work best for your needs.

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Old 08-26-11, 12:50 PM   #1
wernst
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Speed/Performance vs. Puncture Resistance for Kojaks and Marathon Racers?

All,

So the 20" Kenda's on my Dahon are looking a little worse for wear, and a goat's head thorn got through and gave me a slow leak this week, so maybe it's time to replace the tires. My daily commute is just under 8 miles on paved roads. Small shards of glass are generally all I have to deal with, but I guess there are a few Goats Head thorn vines somewhere along my commute, since I picked out two from my tires this week (and one got through enough to make a slow leak.)

I grew up on 700x20 slicks at 120PSI, and my Dahon has a sprung Brooks Flier saddle, so I guess I'm not too concerned with a tire giving me the utmost in comfort and shock absorption, and I have no problems with a treadless tire, so I've been looking at Schwalbe Marathon Racers and Kojaks. I'm trying to figure out the difference.

The Marathon Racers are described as:


while the Kojaks are described as:


That is to say, their attributes are shown to be identical, but really, how true can that be?

I see the Kojaks are narrower (1.5 vs. 1.35 inches) and lighter by about 75 grams each, so I ask you all about your real-world opinions about these two tires.

Should both be faster and more puncture resistant than the stock Kendas? Are the Kojacks significantly faster than the Marathon Racers? More fragile? A significantly rougher ride?

Thanks for the insight, folks.

-Warr
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Old 08-26-11, 07:10 PM   #2
lighto
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I "upgraded" from Kenda kampaign (406x1.2 @ 65psi) tires, and didn't notice much (if any) difference at all, except a bumpier ride from the increased pressure. Grossly overrated upgrade.

I think I still would have bought them after my kendas wore out, but had I known the difference would be so small, I would've just waited until the stock tires wore out. I guess it's not a huge loss since I can still use the kendas after the kojaks wear down (assuming the kendas don't go bad by that time for some reason).
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Old 08-27-11, 11:29 AM   #3
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There is a slight difference between the two, with the Kojak being a slick and the Marathon having a bit of tread. If you look closely at the chart, you'll see two pips for 'Off Road' under the grip section for the Marathons.

The Gobike came with 1.95 Kenda Krackpots on it which I replaced with 1.5 Racers. As it's a dual suspension bike ride wasn't effected much, and they seem to roll well at 80psi. As there are times when I go through dirt and quite a bit gets kicked onto the paved trail I went with the Marathons. So far, so good...
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Old 08-27-11, 04:57 PM   #4
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The Kojak is a better choice for on-road only, and the Racer better if you go on gravel occasionally.
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Old 08-27-11, 06:11 PM   #5
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I'm going to sum up my opinion by saying: I'm still waiting for my Kojak tires to cut/tear, let alone puncture.

Also worth noting is these are the smoothest riding narrow, high-pressure 406 tires I've ever ridden.
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Old 08-29-11, 10:53 AM   #6
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I have been pretty happy with Marathon Racers. Lately, have been lowering the tire pressure to about 50/60 PSI in the front/rear for a pretty nice ride. But if you're looking at just performance, I have a hard time imagining them doing better than the Kojaks.
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Old 08-29-11, 08:40 PM   #7
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I am eyeing the Marathon Supremes. I have a pair of Big Apples on my Swift now, and I'd like a speed bump without losing the puncture protection. I have a hub on the rear and don't want to deal with changing the tire. I've seen some ways to do it on this board, but I value having my ride be free of such worries.
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Old 08-29-11, 10:05 PM   #8
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i used to have schwalbe marathon on my TR and switched to kojaks. mostly used on road and to me it's way faster than my marathon. in fact i am thinking of switching to stelvios for a way narrower tires.
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Old 08-30-11, 07:42 AM   #9
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Has anyone used the Durano?
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Old 08-30-11, 09:23 AM   #10
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I like the Kojaks a lot better for road use but in the 355 which I need for Birdys, they they only come with a kevlar bead and cost a lot more. The kevlar bead however makes them lighter and great as a spare.
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Old 08-30-11, 05:14 PM   #11
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I have Duranos on my Swift. They are OK I guess.
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Old 09-28-11, 03:47 AM   #12
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Something shiny caught my eye on the road under my wheels this morning, way too late to avoid it. A moment later, a bang and catastrophic loss of pressure. The shiny thing was a razor (or boxcutter) blade, and my nearly brand new, kevlar rimmed 27 Kojak now has a 2 centimetre slash in it. Of course, I was planning to buying a cheaper wired Kojak and restoring my folding tyre as my emergency backup - but hadn't got around to it.

<obscenity deleted>

Last edited by jefmcg; 09-28-11 at 04:25 AM.
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