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Old 08-14-10, 11:23 PM   #1
IronMac
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Tire Width Question for NWT

Hi all, currently using 20x1.35 Schwalbe Marathon Pluses on my NWT and noticed that BikeTiresDirect has a pretty sweet deal on Marathon Pluses but they only have 20x1.75s. Will these make any sort of difference in my riding?

Right now, short rides of 24-60 kms on pavement but looking to ramp up to 200+ again on same, unloaded. Loaded touring is possible in the future on a variety of paved roads.

Thanks!
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Old 08-15-10, 01:10 AM   #2
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There are 2* different so-called 20" wheel sizes and they are not interchangeable. One is ETRTO 451 and corresponds to 20" x 1-1/8 up to 20"x 1-3/8. Anything 20" x 1-1/2 or wider is actually a smaller wheel, ETRTO 406.

Sounds like you have 451 wheels on your NWT and the tires BTD has in stock are 406 size.

* Actually 3, but the ETRTO 419 size is one I've never seen in practice. For the gory details, see Sheldon Brown's excellent exposition of tire sizes at http://sheldonbrown.com/tire-sizing.html

Last edited by dorkypants; 08-15-10 at 01:16 AM. Reason: add more info + link to Sheldon Brown's page
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Old 08-15-10, 03:10 AM   #3
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Thanks dorkypants for the reply. I went and checked on my tires and they are 35-406 and HS 348.

So, according to the Schwalbe site, the 35 refers to a width of 35 mm and a tire inner diameter of 406.

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Old 08-16-10, 10:12 AM   #4
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It should fit.

I believe Bike Friday claims that 20 x 1.75" fits on a NWT although it is pretty clear to me that bigger tires could fit ... judging from a set of Primo Comet 20 x 1.75" tires on my NWT at the moment.
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Old 08-17-10, 03:00 AM   #5
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Thanks invisiblehand, most comforting to know. Along with doing some more reading online and looking at the BF site itself, I went ahead and ordered a bunch of Pluses and a Durano.
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Old 08-17-10, 07:38 AM   #6
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Thanks invisiblehand, most comforting to know. Along with doing some more reading online and looking at the BF site itself, I went ahead and ordered a bunch of Pluses and a Durano.
Anytime IronMac.

A bunch of them! You must be planning on a lot of riding!
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Old 08-17-10, 08:04 AM   #7
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Originally Posted by IronMac View Post
Hi all, currently using 20x1.35 Schwalbe Marathon Pluses on my NWT and noticed that BikeTiresDirect has a pretty sweet deal on Marathon Pluses but they only have 20x1.75s. Will these make any sort of difference in my riding?
Thanks!


The main difference of using Marathon Pluses will be the feeling that you are towing a couple bricks on the end of a string behind your bike. Don't do it - especially if LD riding is in your plans. To ride 200kms+ a day you need an efficient bike and Pluses are anything, but efficient.

Get some Greenspeed Scorchers. I use them on my NWT & Tikit - they are fast, comfy and zero flats for me in 4 combined seasons [NWT + Tikit] of city riding.

Everyone who's tried my bikes has bought Scorchers and loved them.
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Old 08-18-10, 02:04 AM   #8
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Vik, yeah, you mentioned that in another thread. I would have tried out the Scorchers but BTD did not have them on sale so I got the Durano instead.

invisiblehand, as for buying a bunch of tires, I wanted to maximize the savings from the BTD sale so I got 3 Pluses and 1 Durano. I think that that should be good enough for a few years. With any luck, my next tours may be up to Malaysia or better yet Cambodia (I'm in Singapore for the next little while). There may also be a tour down in the US next year (highly, highly doubtful) or RAGBRAI in 2012.
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