Need some help with tyres

[s1962a]

I'm refurbishing an old road bike I haven't used in a long time. I want to buy some replacement tyres, but confused about which inner tubes I need. The existing tyres are road ones but i'd like something a bit more hybrid

On the Wheel it says the following

Double wall
622x18
6061-T6
700

And on the tyre the following size

700x35c


I can find replacement 700x35c tyres but not sure about which inner tube. Also are these the right tyres for the wheel or would other sizes be better? (they the are the ones that came with it new)

Cheers

[Roastie ITR]

I personally use the Conti Cross 28's for my 700 35c tyres


https://www.halfords.com/cycling/bike-parts/inner-...

These inner tubes are for 32c-47c tyres.

If you let us know what type of riding that you do i.e. road, canal path, off road etc, I'm sure that people can recommend the best size & tyre for your needs.

[yellowjack]

s1962a said:

I'm refurbishing an old road bike I haven't used in a long time. I want to buy some replacement tyres, but confused about which inner tubes I need. The existing tyres are road ones but i'd like something a bit more hybrid

On the Wheel it says the following

Double wall
622x18
6061-T6
700

And on the tyre the following size

700x35c


I can find replacement 700x35c tyres but not sure about which inner tube. Also are these the right tyres for the wheel or would other sizes be better? (they the are the ones that came with it new)

Cheers

To clear things up (maybe?)...


Double wall - describes the construction of the wheel rim itself. Don't worry about it, it's something that "just is".

622x18 - '622' is the European Tyre and Rim Technical Organisation (ETRTO) size of the wheel rim. It's an "industry standard" that means all wheels and tyres (of the same ETRTO size) should be completely interchangeable. In the bad old days no two 700c wheels would be measured at the same point, so some 700c tyres wouldn't fit on some 700c wheels. The '18' part is the width of the wheel rim between the beads, where the tyre fits. It may limit the size (width) of tyres you can fit, but usually at the lower sizes, such as 20c, or 23c tyres. You DON'T need to match the width of the tyre to the width of the rim though!

6061-T6 - This is the grade of aluminium alloy the wheel rim is made from. Another "it just is" item. Forget about it unless you're buying new wheels and want something made from stronger or lighter ali.

700 - this is the notional circumference of the wheel with a tyre mounted. So you'll need 700 x ?c tyres to fit them. The tyres will have, for example, 700 x 35c written large on the sidewall. But in smaller lettering it will also have the ETRTO size (622-35). If in doubt, compare the ETRTO size of the tyres to check that they'll fit your wheel rims.

The tyre size of 700x35c - tyres are "nominally" 700 circumference. 35 is the tyre's nominal width when inflated. Larger tyres contain greater volumes of air, and should be "plusher" to ride. Again, a 700x35c tyre should have an ETRTO size marked on it, likely 622-35.

(The late) Sheldon Brown explains the background to ETRTO sizing here... https://www.sheldonbrown.com/tire-sizing.html ...but don't worry about it too much. Any decent modern tyre will fit a decent modern wheel of the same ETRTO size.

As for buying inner tubes? You need a 700c tube to fit the wheel rim. You need to buy the right valve type too (Schrader versus Presta). And you'll need one with a width to suit your chosen tyre. Tubes cross over multiple tyre sizes, such as 700 x 28/35c, or 700 x 32/38c. Any tube that covers 35c within it's width range will work for you.

My 622-17 rims mount a 700x25c (622-25) tyre with a 700x18/25c tube, for example.

Edited by yellowjack on Wednesday 15th April 22:38

[s1962a]

Thank you all - this is very helpful!