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Embarrassingly basic question... How do I find my tire and tube size?

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Embarrassingly basic question... How do I find my tire and tube size?

Old 05-22-16, 12:15 PM
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milofilo
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Embarrassingly basic question... How do I find my tire and tube size?

Just bought a Trek 520, I think it's from 1994 and the tires are so shredded I can barely read them. On the metal it says 700c, but on the tire it says 28-622 as well as some other illegible numbers.

What size tires does it need? Also, does anyone have a recommended tire brand? I live in a city, so i would happily pay more for stronger tires that resist glass...

Thanks in advance.
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Old 05-22-16, 12:21 PM
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700 X 28's

http://www.pricepoint.com/shop.axd/S...iameter%3a700c

https://www.google.com/?gws_rd=ssl#q...ike+tires+sale
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Old 05-22-16, 12:23 PM
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Originally Posted by milofilo View Post
Just bought a Trek 520, I think it's from 1994 and the tires are so shredded I can barely read them. On the metal it says 700c, but on the tire it says 28-622 as well as some other illegible numbers.

What size tires does it need? Also, does anyone have a recommended tire brand? I live in a city, so i would happily pay more for stronger tires that resist glass...

Thanks in advance.
You're in luck. You found everything you need.

700c & 622 are the SAME One is derived from measuring the rim, while the other is from measuring the tire (then has become a standard notation).

So, get a 700c x 28 tire for a pretty close replacement to what you had.

The second number is the tire width (height). Look at the clearance with your frame, as well as your riding style to determine if you wish to go with a wider or narrower tire.

Schwalbe Marathon and Panaracer Tourguard tires are TOUGH.
There are a lot of other lighter tires with flat protection you might consider too.
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Old 05-22-16, 12:25 PM
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For a 520, I'd run a 700 x 32c as that is a better size for touring and probably what came stock on the bike.

There are a lot of choices out there in a high quality, tough tire. I like the continental touring plus reflex 700 x 32c (or 28c if you prefer). These are good quality tires and the reflective sidewall is a plus. Plus the price is reasonable at under $30 per tire.
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Old 05-22-16, 01:45 PM
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Ok.. Now a wheel recommendation

Originally Posted by bikemig View Post
For a 520, I'd run a 700 x 32c as that is a better size for touring and probably what came stock on the bike.

There are a lot of choices out there in a high quality, tough tire. I like the continental touring plus reflex 700 x 32c (or 28c if you prefer). These are good quality tires and the reflective sidewall is a plus. Plus the price is reasonable at under $30 per tire.
Just ran across the street to my bike shop and got one of these! Unfortunately I apparently have a special wheel that is very difficult to change tubes so I need a new wheel also. Any recommendations for that?
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Old 05-22-16, 01:49 PM
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Originally Posted by milofilo View Post
Just ran across the street to my bike shop and got one of these! Unfortunately I apparently have a special wheel that is very difficult to change tubes so I need a new wheel also. Any recommendations for that?
Take the tire and wheel back to the shop and maybe they can advise you as to why it won't fit.
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Old 05-22-16, 01:50 PM
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Originally Posted by milofilo View Post
Just ran across the street to my bike shop and got one of these! Unfortunately I apparently have a special wheel that is very difficult to change tubes so I need a new wheel also. Any recommendations for that?
There's no such thing. If it's a clincher wheel, it's a clincher wheel and the only issue is what size tire it can take. Assuming these are the original wheels, it will take a 32c tire easily. Tubes are either schraeder or presta.

Why don't you post some pics of the wheel?
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Old 05-22-16, 01:51 PM
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Originally Posted by 10 Wheels View Post
Take the tire and wheel back to the shop and maybe they can advise you as to why it won't fit.
+ 1.
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Old 05-22-16, 01:52 PM
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Originally Posted by milofilo View Post
Just ran across the street to my bike shop and got one of these! Unfortunately I apparently have a special wheel that is very difficult to change tubes so I need a new wheel also. Any recommendations for that?
Post some info about your wheel. How old is it? "tubeless"? Photos?

I'd just see if you can get your existing wheel to work before going out and buying new. Perhaps tire levers?

Sometimes extra thick rim tape can be problematic, and there are a few alternatives to making the rim tape thinner. For example, velo plugs offer a tapeless solution (although I like a bit of electrical tape on top of them).
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Old 05-22-16, 02:05 PM
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Yes-- I believe the front wheel is not the original. It does not have a proper rim and would be very hard to change according to the bike repair guy. I got a tire for the back wheel which is OK. See photo here:
https://goo.gl/photos/soJgcRuDsnzbWQAe6


I am ok with buying another wheel and tire but am a bit overwhelmed by all the options on the internet... I also need the tape for the inside of the wheel and tubes and am worried it will not all work together.
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Old 05-22-16, 02:13 PM
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I'm having troubles seeing from the photo, but that looks like a sewup rim. Concave rounded including rounded around the edges. Did you get it with a tire on the rim? Was the tire round and glued on?

They actually are very easy to mount tires on, but it requires glue and a special tire.

So if your rear is a clincher, I'd start hunting for a matching clincher. Take some photos of your rear if you want to match. Outside width of the rim? Brand? Color?

If you're going to a bike shop, what do they recommend?
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Old 05-22-16, 02:18 PM
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Yes, exactly. I pulled off the tire and it was glued to the wheel. The bike shop guy said I would have to reglue it every time I got a flat.

I just bought the bike this morning so I don't know much about it... It was very cheap but the tires were completely frayed. The back tire says "COSMOS 700c" and also "matrix". On the inside where all the spokes come together it says "parallax"

It's just a regular old silver color... From 1994 I believe.

The bike shop guy recommeded just buying another 700c wheel. They were all pretty expensive though, so i wanted to do some research first. I am wondering if something like this could work: http://www.pricepoint.com/Brand/Mavi...eel-w-Tire.axd

Last edited by milofilo; 05-22-16 at 02:20 PM. Reason: update
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Old 05-22-16, 02:24 PM
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This is the bike, got it for $100.

https://goo.gl/photos/9AY4dyPaZ5B1vCFa9
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Old 05-22-16, 02:28 PM
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Just about any wheel will work on the front. That isn't a bad deal.

Also look in Craigslist under parts. Or if you have a local bike co-op. But the deal looks good.

The sewups are very quick and easy to swap tires with a flat, but actually patching them is a major pain. New tire sealants may have levelled the playing field a bit. However, I don't think I'd choose a bike with one sewup, and one clincher.

BTW, take come closeup photos of your front hub. It is quite possible that there will be people on this board that would do a straight across trade for your old wheel.

Where are you located?
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Old 05-22-16, 02:31 PM
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Yep, that's a rim for tubular tires.
Overall, "different" rather than "difficult" to deal with.
Truly fixing a flat on one thought, that can take some time.
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Old 05-22-16, 02:34 PM
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Originally Posted by milofilo View Post
This is the bike, got it for $100.

https://goo.gl/photos/9AY4dyPaZ5B1vCFa9
It looks like you should start hunting for a new chain too.

Those are pretty unique brakes & shifters on your bike. I'd probably either go with standard road drop bars, or convert to MTB brakes/shifters. Keeping your eyes open, one can often find drop bars for $5 or so. 'Watch the stem size.

Oh, also, do the number of shifts on your shifters match the number of sprockets on your freewheel or cassette? If not shifting can be a mess.

Last edited by CliffordK; 05-22-16 at 02:38 PM.
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Old 05-22-16, 02:36 PM
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Sure, I am in Chicago.

Here are some photos of the front wheel hub. Looks like it's a Campagnolo Record 700c?

https://goo.gl/photos/8ceN4BuTJ7FJ5FaFA
https://goo.gl/photos/xEz1meaByq6AShZC8
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Old 05-22-16, 02:38 PM
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yes the bike needs a lot of work... will definitely need a chain and different brakes/shifters... Just trying to start with the wheels so I can ride it to a community shop where I can use tools. I have allen wrenches and tire levers but no tools for chains etc.
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Old 05-22-16, 02:42 PM
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Originally Posted by milofilo View Post
Just bought a Trek 520, I think it's from 1994 and the tires are so shredded I can barely read them. On the metal it says 700c, but on the tire it says 28-622 as well as some other illegible numbers.
28-622 is the ISO/ETRTO designation equivalent to 700 x 28C.
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Old 05-22-16, 03:18 PM
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Originally Posted by milofilo View Post
yes the bike needs a lot of work... will definitely need a chain and different brakes/shifters... Just trying to start with the wheels so I can ride it to a community shop where I can use tools. I have allen wrenches and tire levers but no tools for chains etc.
If your old tire holds air, it may be good enough to get you to the community shop. Sewups always are FLAT when not in use.

If the glue is sticky, it might hold the tire in place, otherwise glue it back on. There is somewhat of a risk of rolling a poorly glued tire on a tight corner, so be careful.

It is always handy to have a pump with the bike.

=========================

Your bike has been assembled with a bunch of mismatched parts. You'll have to judge the quality of each part.

I'd take a few moments to first decide if the bike is what you really want. Then start thinking of your final vision for the bike. Commuting, touring, etc. Flat bars? Drop bars? Number of speeds on the front and rear?

How many speeds does the rear have? I'm counting about 7. Is that a freewheel or cassette?

Anyway, if you decide you want to go with, say 9-speed. Then you may choose to buy a new wheelset. Front + Rear to match your needs.
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Old 05-22-16, 06:56 PM
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Originally Posted by milofilo View Post
Sure, I am in Chicago.

Here are some photos of the front wheel hub. Looks like it's a Campagnolo Record 700c?

https://goo.gl/photos/8ceN4BuTJ7FJ5FaFA
https://goo.gl/photos/xEz1meaByq6AShZC8
High flange Campy Record hub? Somebody wants that wheel - There are more than a few vintage bike enthusiasts who will happily pay what a replacement will cost you. Most bike shops will not be all that familiar with sewup tires so take what this shop says with a grain of salt. Mostly, it's only a few total bike-dorks who will want to commute on tubulars. So, yeah, go with a normal clincher and sell that.

Clifford spells it out pretty well. You've got a lot of decent but weirdly mismatched bike parts there to sort out.

TBH, I had no idea it was at all possible to mount those levers like that. Those may have value to resell also unless you decide to go with drop bars and keep them. What model are they? Does it shift cleanly?

Last edited by Ronsonic; 05-22-16 at 07:02 PM.
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Old 05-22-16, 07:56 PM
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I bet you could post in the Classic & Vintage forum and someone in there from Chicago would trade you a clincher front wheel for your tubular.

Those shifters look like old RX100 (or whatever they're called) 7 speed (I Think)
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Old 05-23-16, 07:18 AM
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FWIW, to the right person, that high-flange Camagnolo tubular rim might be worth as much as the rest of the bike combined. It also would be completely improper for touring.
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Old 05-23-16, 09:54 AM
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Originally Posted by AlexCyclistRoch View Post
FWIW, to the right person, that high-flange Camagnolo tubular rim might be worth as much as the rest of the bike combined. It also would be completely improper for touring.
The OP did start another thread.
http://www.bikeforums.net/classic-vi...eel-value.html

Not a lot of quotes, but two people have come up with similar values around $50.

It is a single wheel... which means that any buyer would have to match it to a rear wheel. For a few reasons, the fully built wheel isn't worth much more than just the hub, especially if it needs to be shipped. Perhaps a bit better if it is a local purchase.

A lot of little things can add up. The shifters are also worth a few bucks which could go towards new brakes/shifters if the OP chooses to use MTB parts on the bike.
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Old 05-23-16, 10:08 AM
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Originally Posted by milofilo View Post
This is the bike, got it for $100.

https://goo.gl/photos/9AY4dyPaZ5B1vCFa9
Looks like it'd be perfect for a drop-bar conversion!
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