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Old 07-19-14, 08:52 PM   #1
pakossa
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Any tubes that properly fit 28C tires?

I use 28C tires (currently Rubino Pros). I find it annoying that I can't find a tube that fits right. The ones labeled 23 - 25C are obviously too small -- usually have to stretch them to get it on. But the 28 - 32C are so big, they have to be folded over for several cm to go in. Anyone find a brand that actually fits right?
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Old 07-19-14, 09:26 PM   #2
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Schwalbe SV15 --700x28 is max recommended tire size, so perfect fit.
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Old 07-19-14, 10:11 PM   #3
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Originally Posted by pakossa View Post
I use 28C tires (currently Rubino Pros). I find it annoying that I can't find a tube that fits right. The ones labeled 23 - 25C are obviously too small -- usually have to stretch them to get it on. But the 28 - 32C are so big, they have to be folded over for several cm to go in. Anyone find a brand that actually fits right?
Since the actual volume of a "claimed" 28c tire and unknown rim width is rather variable a "perfect" is a discovery, not a prediction. But since the tube has a fair amount of play there are likely many that will meet the OP's needs. The Op is inflating the tube only to a shape and not expanding it at all before trying to install it? Andy.
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Old 07-20-14, 06:37 AM   #4
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I can't find a tube that fits right. Anyone find a brand that actually fits right?
If you have box section rims the Rubena 25/28mm tubes are just right, the 47mm valve stem precludes deep rim use.

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Old 07-20-14, 11:59 AM   #5
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Michelin tubes marked "25-32mm" fit fine in all of those tire sizes.

https://www.universalcycles.com/shop...ls.php?id=4608
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Old 07-20-14, 12:05 PM   #6
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Originally Posted by pakossa View Post
I use 28C tires (currently Rubino Pros). I find it annoying that I can't find a tube that fits right. The ones labeled 23 - 25C are obviously too small -- usually have to stretch them to get it on. But the 28 - 32C are so big, they have to be folded over for several cm to go in. Anyone find a brand that actually fits right?
If this is the case, you're doing it wrong. I fit 28-32c tubes in 28c tires all the time without having to do this. Maybe don't pump the tubes up so much before trying to install -- working pressure for tube install is barely enough air to give it shape. Don't stretch the tube as you install it around the rim and there shouldn't be extra slack when the last of it fits in the tire.
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Old 07-20-14, 02:28 PM   #7
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I just use 22-25 in my 28s. Never found I had to do any "stretching". That just doesn't make any sense to me.
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Old 07-20-14, 07:52 PM   #8
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I use undersized tubes, mostly 23-25 I think, for my 28 Vittoria Rubinos. Performance bike have good quality, house brand, for $4-$5, and sometimes cheaper on sale. Tubes stretch a lot, and undersized tubes were always working great for me.
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Old 07-20-14, 07:57 PM   #9
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+1 OP is doing it wrong or just being too picky. It's really not critical.

Whenever possible I use tubes that are a bit oversized. Sure they might be a bit heavier but I don't have to fill them as often.
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Old 07-20-14, 08:08 PM   #10
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I use undersized tubes on all my bikes and find them easier to install and work fine.

On the bikes with 28mm tires, I use ~23-25mm tubes.
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