Hello there, great site

[dorisday]

Hi I have a Raleigh vintage twenty in need of new inner tubes and tyres, can anyone help with sizes i need to order, thanks

 

[Paulus]

Good morning and welcome to the forum.

I believe the Raleigh Twenty is so called because of it's 20 inch wheels. These would be of use------

https://www.halfords.com/cycling/bi...chwalbe-marathon-reflex-tyre-20in-486422.html

 

[dorisday]

Thanks so much that is a great help

 

[biggs682]

@dorisday best thing to do is to check whats written on the sidewalls

 

[SkipdiverJohn]

@dorisday best thing to do is to check whats written on the sidewalls

As Mr Biggs says, be careful when ordering 20" tyres, they are not all the same, in just the same way there are various 26" tyre types.
If you own a modern shopper or folding bike, it's a fair bet the wheels are ISO 406mm sized, and often fitted with 1.75" wide tyres.
However, if you have a vintage shopper bike like a Raleigh Twenty or Dawes Kingpin, theres a good chance it will be running 20" x 1 3/8" tyres on ISO 451mm rims. The two types of rims require different tyres, so check the existing tyres for the ISO sizing before ordering any replacements..

 

[dorisday]

@dorisday best thing to do is to check whats written on the sidewall

As Mr Biggs says, be careful when ordering 20" tyres, they are not all the same, in just the same way there are various 26" tyre types.
If you own a modern shopper or folding bike, it's a fair bet the wheels are ISO 406mm sized, and often fitted with 1.75" wide tyres.
However, if you have a vintage shopper bike like a Raleigh Twenty or Dawes Kingpin, theres a good chance it will be running 20" x 1 3/8" tyres on ISO 451mm rims. The two types of rims require different tyres, so check the existing tyres for the ISO sizing before ordering any replacements..

Thanks I will get it out of shed tomorrow and see if I can see anything, think bike is from 70s I picked it up for £25 during lockdown but tyres go flat after few days and look worn, probably originals from 70s, lol

 

[dorisday]

@dorisday best thing to do is to check whats written on the sidewalls

Thanks again, going to check tomorrow

 

[biggs682]

Thanks again, going to check tomorrow

Best check just in case

 

[midlife]

There used to be a Raleigh Twenty website but I think it closed.....

 

[Ming the Merciless]

https://raleightwenty.webs.com/406or451.htm