yes i know it has been covered here but i got burned for $100 on a couple of orders before the mistake was realized.
so that maybe someone else might get burned i am posting this friendly reminder.

back in the day when i walked into the payless Hardware Store around 1933, you could buy a 26 x 1 3/8" tire and it would fit a 26" rim.

not any more.

so be careful out there1

you need to realize that you want a number called 559, and not a number called 590.

one is for a 26" rim and the other i suppose is for a 650B rim.

i made the same mistake on a schwalbe marathon and a continental gatorskin

mistake number 2. this tire made it from London to the us in about 3 days with free shipping so i do not have the heart to return it. i will donate it to the local bike shop>