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24 x 1 3/4 Tires

Old 10-21-18, 03:20 PM
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Elad63
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24 x 1 3/4 Tires

Is there an alternative modern tire that will fit a juvenile Schwinn Skipper bike I just picked up. They are marked 24 x 1 3/4 on sudewall.
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Old 10-21-18, 04:17 PM
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Clyde1820
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A quick search for "47-507 tire" comes up with a few ...

ISO 47-507 sizing (24x1.75")

Kenda K52 Street
Schwalbe Marathon Plus
Schwalbe Big Ben HS439
Innova IA-2066
Innova IA-2084
Innova IA-2209
Mitas V41
Maxxis DTH 3L
...
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Old 10-21-18, 04:26 PM
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There is a pretty complete guide to tire sizes on Sheldon Brown's site. Typing this on my phone, so I can't find the link easily, but I strongly recommend you look at that.

Two remarks for now:
1. When it comes to bicycle tires, 1.75 and 1 are not the same thing.
2. What Schwinn calls 1 may not be the same as what other manufacturers call 1.
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Old 10-21-18, 04:45 PM
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I was just wondering if modern 24 inch tires will fit it.
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Old 10-21-18, 05:37 PM
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If it is a "Schwinn-specific" tire, it will probably say: "S-7" or similar. As stated above, 1-3/4 although numerically equivalent to 1.75, is not necessarily the same size tire.
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Old 10-21-18, 07:30 PM
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Originally Posted by Elad63 View Post
I was just wondering if modern 24 inch tires will fit it.
If you get the right ones, yes.

-Kurt
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Old 10-21-18, 07:57 PM
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On the other hand, if you get the wrong ones, then: no.
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Old 10-22-18, 01:19 AM
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I second that the 24 X 1 3/4" tire size is NOT the same as 24 X 1.75". Schwinn had their own tire sizes for some reason (maybe so you were more likely to buy their tires when you needed new ones). Any Schwinn tire size with a fraction at the end of it is different than one with the decimal equivalent at the end of it's size and won't interchange.

I believe Kenda still makes a 24 X 1 3/4" tire. I need to get one for my Schwinn unicycle (which takes this size) before Kenda decides to quit making them.
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Old 10-22-18, 02:00 AM
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Thanks for the info. Off to the LBS. I'll post updated pictures in another thread when bike is cleaned up and rideable.
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Old 10-22-18, 02:55 AM
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The 24 x 1 3/4 Schwinn S-7 tire has a bead seat diameter of 520mm, while a typical 24 x 1.75 has a bead seat diameter of 507mm. The S-7 is larger and the two do not interchange. Do not let the LBS tell you differently.

When I was a mere tad I discovered the same fitting advice applied to the Schwinn 26 x 1 3/4 and a standard 26 x 1.75.

https://www.bmxguru.com/products/ken...l-black-47-520
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