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Switching bike tyres and rims

Old 09-05-18, 05:26 PM
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2pedals5
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Switching bike tyres and rims

I had been looking for an information if I can just change the current tyres to make it thinner or do I need to also change the rim and the tyre? How do I find the rim that will match the thin tyre?
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Old 09-05-18, 06:23 PM
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Cl904
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your Current tires should have a size marked... something like 700x25 or 26x2.0, etc... the first number is the rim size, the second is the width of the tire.

You can usually fit tires with the same first number on the same rims, within reason.

What kind of bike do you have?
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Old 09-05-18, 07:39 PM
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2pedals5
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Originally Posted by Cl904 View Post
your Current tires should have a size marked... something like 700x25 or 26x2.0, etc... the first number is the rim size, the second is the width of the tire.

You can usually fit tires with the same first number on the same rims, within reason.

What kind of bike do you have?
1977 miyata american 10 speeds BUT with this old stem tube, it has gotten stiff to switch gears so I converted into single speed which means the cassette had removed with the origin tyre. Now I have a new wheel free coast single speed.
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Old 09-05-18, 08:12 PM
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Originally Posted by Cl904 View Post
your Current tires should have a size marked... something like 700x25 or 26x2.0, etc... the first number is the rim size, the second is the width of the tire.

You can usually fit tires with the same first number on the same rims, within reason.

What kind of bike do you have?
I'm starting to sense that converting to singlespeed wasnt a good idea...kinda slowing me down. Idk if it's me or its the bike but I thought about changing up to 3 speeds. Your opinion?
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Old 09-05-18, 08:17 PM
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Originally Posted by Cl904 View Post
your Current tires should have a size marked... something like 700x25 or 26x2.0, etc... the first number is the rim size, the second is the width of the tire.

You can usually fit tires with the same first number on the same rims, within reason.

What kind of bike do you have?
if I recalled correctly I have 42 or 44 t. Maybe buy more teeth?
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Old 09-06-18, 03:40 AM
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No help for your original question if you do not provide the info ........ what tire and rims do you have and what do you want to change to. Tire size, rim size???
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Old 09-08-18, 08:23 AM
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Originally Posted by trailangel View Post
No help for your original question if you do not provide the info ........ what tire and rims do you have and what do you want to change to. Tire size, rim size???
I'm not the OP but I have the same question. And I think the answer is yes....

My numbers are 700x42c. Will my rim be good with a 700x38c tire.??
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Old 09-08-18, 08:34 AM
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Originally Posted by BirdsBikeBinocs View Post
My numbers are 700x42c. Will my rim be good with a 700x38c tire.??
Certainly
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Old 09-08-18, 02:38 PM
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limitation is the rim width.. Tire can't be narrower than the rim it goes on.
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Old 09-09-18, 10:15 PM
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2pedals5
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Originally Posted by trailangel View Post
No help for your original question if you do not provide the info ........ what tire and rims do you have and what do you want to change to. Tire size, rim size???
Sorry I got delayed to response back. With the rear tire/rim I have 700x35c. For the front I have 28x630. My intention is to change tire thinner than it is now. The rear tire is pretty thick and not my liking.
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Old 09-09-18, 10:37 PM
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Originally Posted by 2pedals5 View Post
Sorry I got delayed to response back. With the rear tire/rim I have 700x35c. For the front I have 28x630. I want to change tire to be thinner than it is now. The rear tire is pretty thick and not my liking.
Edit:I don't understand WHY do I have 2 different numbers with front and rear? Why can't the front be marked the exact same as rear"700x35c"
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Old 09-10-18, 12:52 AM
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Im no expert but 700x35c is french size and the 28x630 is etro if your bike takes 700 wheels than you just look for tires based on mm so you want like a 28 or 25 mm tire for a 700 wheel easy to find . but i think yours takes 27 inch wheels so you would look for 27 inch tires they are not as easy to find amd your options are less . what brand are your wheels the markings sometime come off over time .

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Old 09-10-18, 02:27 AM
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Originally Posted by 2pedals5 View Post
Sorry I got delayed to response back. With the rear tire/rim I have 700x35c. For the front I have 28x630. My intention is to change tire thinner than it is now. The rear tire is pretty thick and not my liking.
630mm is the bead seat diameter of the front wheel; this is an old road wheel diameter that gets referred to as "27 inch."
"700c" means a bead seat diameter of 622mm, and is the dominant road wheel diameter today.
So you have different wheel sizes front and rear.

Tire construction tends to have vastly larger implications for road performance than tire size. If you want to make the bike fast, don't just look for narrow; there are plenty of slow narrow tires out there. Get a tire that's designed for speed.

Any 700c tire should be able to be mounted on your rear wheel, as long as you don't pick something narrower than the inner width of the rim.
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