tyre measurements

bead seat diameter

Which tire fits safely on which rim?
[all dimensions in millimeters]
Tire width
Rim width
(interior)
1820232528323537404447505457
13XXXX          
15  XXXX        
17   XXXXX      
19    XXXXXX    
21      XXXXXX  
23        XXXX  
25         XXXXX

Note: This chart may err a bit on the side of caution. Many cyclists exceed the recommended widths with no problem