Bicycle Mechanics - 700x35c=700cx35?

Bikeforums.net is a forum about nothing but bikes. Our community can help you find information about hard-to-find and localized information like bicycle tours, specialties like where in your area to have your recumbent bike serviced, or what are the best bicycle tires and seats for the activities you use your bike for.




View Full Version : 700x35c=700cx35?


vol
09-17-10, 05:58 PM
Are these two wheel sizes the same or not?


BCRider
09-17-10, 06:07 PM
700c is the name given to the tire size most commonly used for road bikes. I don't know if 35c is a valid descriptor or not.

vol
09-17-10, 06:15 PM
My wheels spec is "700x35c". Here (http://www.amazon.com/Kenda-REDLINE-Kross-Supreme-Skinwall/dp/B000C14PC6) is one such.


LarDasse74
09-17-10, 06:20 PM
I don't think I have ever seen 700C X 35. The size is called 700C (means rim has 622mm bead seat diameter(BSD)) but is usually combined with the tire width to give 700 X xxC, like 700 X 35C (as far as I can recall, anyway)

Regardless - if the tire say '700' somewhere on it, it will fit your 700C rim. Check other places and you will see the ISO BSD measurement of 622.

Edit: From a Bontrager/Trek bike spec sheet: "Tires Bontrager CXO, 700x34c"

From Specialized Cirrus spec sheet:
"FRONT TIRE Specialized All Condition Armadillo Elite, 700x23c"

And from Kona 'Jake the Snake' bike spec sheet:
"Front Tire Maxxis Mud Wrestler 700x35C Kevlar Rear Tire Maxxis Mud Wrestler 700x35C Kevlar"

JanMM
09-17-10, 06:26 PM
The wheel size is 700C in the French system. http://www.sheldonbrown.com/tire-sizing.html
That would be 700C x 35.
700 x 35C would be a typo or error.

LarDasse74
09-17-10, 06:30 PM
The wheel size is 700C in the French system. http://www.sheldonbrown.com/tire-sizing.html
That would be 700C x 35.
700 x 35C would be a typo or error.

Here is a page from Harris Cyclery - the host for Sheldonbrown.com

http://sheldonbrown.com/harris/tires/622.html

All 700C tires on the Harris Cyclery website are given as 700 X xxC, not one instance of 700C X xx.
It may be confusing, and I am not saying it is right, but that is the normal way it is written. Luckily, any bike shop, when asked for a "700C X 35" or "700 X 35" or "700 X 35C" will probably know what you mean. If they don't... find another bike shop.

Edit: From the Sheldon Brown page linked above...
"For example, a 700 x 20 C road tire would be a 20-622; a 700 x 38 hybrid tire would be a 38-622."

He uses with the 'C' after the width and with no 'C' at all.

JanMM
09-17-10, 07:02 PM
Here is a page from Harris Cyclery - the host for Sheldonbrown.com

http://sheldonbrown.com/harris/tires/622.html

All 700C tires on the Harris Cyclery website are given as 700 X xxC, not one instance of 700C X xx.
It may be confusing, and I am not saying it is right, but that is the normal way it is written. Luckily, any bike shop, when asked for a "700C X 35" or "700 X 35" or "700 X 35C" will probably know what you mean. If they don't... find another bike shop.

Edit: From the Sheldon Brown page linked above...
"For example, a 700 x 20 C road tire would be a 20-622; a 700 x 38 hybrid tire would be a 38-622."

He uses with the 'C' after the width and with no 'C' at all.

OK. I see. What a mess bike tire nomenclature is. I resolve to never again say or write 700 or 700c and will forever use 622. Ha!:eek:

And, further, I will only ride on 559 wheels, which I do. Until I get a bike with 700c, I mean 700 wheels.

LarDasse74
09-17-10, 07:10 PM
OK. I see. What a mess bike tire nomenclature is. I resolve to never again say or write 700 or 700c and will forever use 622. Ha!:eek:

And, further, I will only ride on 559 wheels, which I do. Until I get a bike with 700c, I mean 700 wheels.

700 wheels! That is not a bicycle - it is a septcenti-cycle!

vol
09-17-10, 07:10 PM
So looks like there is no different animal... As long as no possible confusion, that's good.

davidad
09-18-10, 04:04 PM
700C is the original size for the 622 rim. The 700 A&B is no longer in use as far as I know.

oldbobcat
09-18-10, 06:04 PM
For nit-pickers the correct nomenclature is 700C X 35, which means 622 mm rim flange diameter by 35 mm tire diameter. Chances are, this is what any combination of the fragments "700," "C", "X," and "35" signify.

LarDasse74
09-18-10, 07:10 PM
...the correct nomenclature is 700C X 35...

Thank you for the 'correction.' I have been using it wrong since I was a child, then for 15 years working in bike shops.

I guess I will have to send corrections to the people maintaining the following websites, as they all use it wrong too...

www.sheldonbrown.com (http://www.sheldonbrown.com)
www.specialized.com (http://www.specialized.com)
www.conti-online.com (http://www.conti-online.com) (continental tires)
www.maxxis.com (http://www.maxxis.com) (maxxis tires)
www.kenda.com.tw (http://www.kenda.com.tw) (kenda tires)
www.pricepoint.com (http://www.pricepoint.com)
www.cannondale.com (http://www.cannondale.com)
www.schwinnbike.com (http://www.schwinnbike.com)
www.jamisbikes.com (http://www.jamisbikes.com)
http://www.panaracer.com/ (panaracer tires)
www.vittoria.com (http://www.vittoria.com) (vittoria tires)...



I could go on, but I shudder to think how many people I will have to notify of this ongoing error. They are all going to be so embarrased when I tell them some random guy on the internet says they are labelling and selling their tires wrong.

Thank you, sir. Thank you. Thank you. And again, I thank you.

vol
09-18-10, 07:58 PM
For nit-pickers the correct nomenclature is 700C X 35, which means 622 mm rim flange diameter by 35 mm tire diameter.

Did you mean to say "35 mm tire width"? (tire or rim, by the way?)

JohnDThompson
09-18-10, 09:44 PM
Use the ISO (ETRTO) sizing standard and say goodbye to the confusion. A 700 x 35C or 700C x 35 would both be designated as 35-622 under the ETRTO system.

Most, if not all, modern tires should have ETRTO size markings on them.

Sixty Fiver
09-18-10, 09:53 PM
700C is the original size for the 622 rim. The 700 A&B is no longer in use as far as I know.

The letters used to denote rim width in the French system and now 700c describes all 622 mm rims.

Friend snagged a Dawes Kingpin folder here today and it is fitted with 500A rims which are 440 mm... if anyone knows where to find tyres in the size I would be happy to know this.

Barring that it is looking like we will rebuild his wheels to the more common 451 size.

fietsbob
09-18-10, 11:27 PM
35C is a pretty hot day..:D

Sixty Fiver
09-18-10, 11:37 PM
35C is a pretty hot day..:D

I don't think we ever got that warm here this summer... it has been a cool and wet season here that feels more like the PNW than Alberta.