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Sizing
Rubber Tires / Air Free Tire Equivalents

 
Fractional Sizes
 Fraction Size  ETRTO  Type of Bike  Air Free Equiv.
 28 x 1 1/2  635 mm old type roadsters yes
 27 x anything  630 mm older road bikes yes
 26 x 1 (650C)  571 mm time trial and triathalon, -
 26 x 1  590 mm wheelchair yes
 26 x 1 3/8(S - 6)  597 mm old Schwinns yes
 26 x 1 3/8 (EA3)  590 mm recumbents, older 26", yes
 26 x 1 1/2 (650B)  584 mm tandem/ few Raleigh & Schwinn -
 26 x 1 3/4 (S-7)  571 mm Schwinn cruisers -
 25 x 1  559 mm wheel chair yes
 24 x 1  520 mm wheelchair  
 24 x 1 1/8  520 mm odd size  
 24 x 1 1/8  540 mm wheelchair -
 24 x 1 1/4  547 mm wheelchair yes
 24 x 1 3/8 (S-5)  547 mm Schwinn juvenile lightweights -
 24 x 1 3/8 (E-5)  540 mm juvenile and wheel chair yes
 20 x 1 1/8  451 mm lightweights, BMX yes
 20 x 1 1/4  451 mm BMX, lightweights, recumbents yes
 20 x 1 3/8  451 mm recumbents,  yes
 20 x 1 3/4  419 mm Schwinn juvenile -
 17 x 1 1/4  369 mm Alex Moulton -
 16 x 1 3/8  349 mm juvenile yes
 16 x 1 3/4  317 mm Schwinn juvenile -
 12 1/2 x anything  203 mm juvenile, scooters yes
 10 1/2 x 3 - Wheelchair, scooter, industrial yes
 10 x 2  152 mm wheel chair -

This section only shows which airless tires can replace your tires. For example: you may use a 26 x 2.0 but you can replace it with a 26 x 1.9 or a 26 x 1.5 if you like, but rims vary in width so not all of our tires fit all rims. Please use the Quick Size or the Tire Selector when in doubt.

Decimal Sizes

 Decimal Size  ETRTO  Type of Bike  Air Free Equiv.
 
 26 x 1.00  559 mm mountain bikes, cruisers -
 26 x 1.25  559 mm old lightweights -
 26 x 1.375  559 mm old lightweights -
 26 x 1.5  559 mm  mountain bikes, cruisers yes
 26 x 1.75  559 mm mountain bikes, cruisers yes
 26 x 1.9 or 1.95  559 mm mountain bikes, cruisers yes
 26 x 2.0  559 mm mountain bikes, cruisers yes
 26 x 2.125  559 mm mountain bikes, cruisers yes
 26 x 2.25  559 mm mountain bikes, cruisers measure the bead width and call us
 24 x 1.5  507 mm juvenile mountain bikes, cruisers yes
 24 x 1.75  507 mm juvenile mountain bikes, cruisers yes
 24 x 2.0  507 mm juvenile mountain bikes, cruisers yes
 24 x 2.125  507 mm juvenile mountain bikes, cruisers yes
 22 x 1.75  457 mm  uvenile -
 22 x 2.125  457 mm juvenile -
 20 x 1.5  406 mm BMX, folders, recumbents yes
 20 x 1.75  406 mm BMX, folders, recumbents yes
 20 x 2.0  406 mm BMX, folders, recumbents yes
 20 x 2.125  406 mm BMX, folders, recumbents yes
 16 x 1.75  305 mm juvenile, folders, recumbents yes
 16 x 2.0  305 mm  uvenile, folders, recumbents yes
 16 x 2.125  305 mm  uvenile, folders, recumbents yes
  8 x 1.75 -  wheelchair, scooter  
This section only shows which airless tires can replace your tires. For example: you may use a 26 x 2.0 but you can replace it with a 26 x 1.9 or a 26 x 1.5 if you like, but rims vary in width so not all of our tires fit all rims. Please use the Quick Size or the Tire Selector when in doubt.

Millimeter Sizes

 Centimeter Size  ETRTO  Type of Bike  Air Free Equiv.
 
 700 x 40C  622mm hybrid, cross yes
 700 x 35C  622 mm hybrid, cross yes
 700 x 32C  622 mm hybrid, cross yes
 700 x 30C  622 mm hybrid, cross, touring yes
 700 x 28  622 mm touring  yes
 700 x 25C   622 mm touring yes
 700 x 23C   622 mm touring yes
 700 x 20C  622 mm racing, touring yes

This section only shows which airless tires can replace your tires. For example: you may use a 26 x 2.0 but you can replace it with a 26 x 1.9 or a 26 x 1.5 if you like, but rims vary in width so not all of our tires fit all rims. Please use the Quick Size or the Tire Selector when in doubt.  

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