The Air Free QuickSize Method

1. Is the outside of your rim (choose only one) a lot wider than a quarter? barely wider than a quarter? as wide as a quarter? between a nickel and a quarter? as wide as a nickel? between a nickel and a penny? as wide as a penny? between a penny and a dime? wide as a dime? thinner than a dime? 2. Please choose the diameter of your tire choose your diameter iso - 152 size - 10 x 1-3/8" iso - 203 size - 12" iso - 203 size - 12-1/2 x 2-1/4" iso - 203 size - 12.5 x 2-1/4" iso - 203 size - 12" x 1 3/8" iso - 203 size - 12-1/2" x 2-1/4" iso - 203 size - 12 x 2.5" iso - 203 size - 12 x 2.4" iso - 203 size - 12 x 2.2" iso - 203 size - 12 x 2.00" iso - 203 size - 12 x 2.0" iso - 203 size - 12 x 1.95" iso - 203 size - 12 x 1.75" iso - 203 size - 12 x 1.50" iso - 203 size - 12 1/2" x 2 1/4" iso - 203 size - 12 1/2 x 2 1/4" iso - 203 size - 12 x 2.125" iso - 203 size - 12"x 2.25" iso - 305 size - 16" iso - 305 size - 16 x 2.00" iso - 305 size - 16 x 1.95" iso - 305 size - 16 x 1.75" iso - 305 size - 16 x 1.50" iso - 305 size - 16 x 1.35" iso - 305 size - 16 x 1.25 iso - 305 size - 16 x 2.2" iso - 305 size - 16 x 2.25" iso - 305 size - 16 x 2.125" iso - 341 size - 20x1 3/4 iso - 349 size - 16 x 1 3/8" iso - 349 size - 16 x 1 1/8" iso - 349 size - 16x1 3/4 iso - 349 size - 16 x 1 3/8 iso - 355 size - 18 x 1.75" iso - 355 size - 18" iso - 355 size - 18 x 1.95" iso - 355 size - 18 x 1.5" iso - 355 size - 18 x 1.50" iso - 369 size - 17 x 1 1/4" iso - 369 size - 17" iso - 406 size - 20 x 1.96" iso - 406 size - 20" x 1.95" iso - 406 size - 20" iso - 406 size - 20 x 8.00" iso - 406 size - 20 x 8.0" iso - 406 size - 20 x 3.0" iso - 406 size - 20 x 2.60" iso - 406 size - 20 x 2.30" iso - 406 size - 20 x 2.25" iso - 406 size - 20 x 2.20" iso - 406 size - 20 x 2.15" iso - 406 size - 20 x 2.125" iso - 406 size - 20 x 2.10" iso - 406 size - 20 x 2.00" iso - 406 size - 20 x 1.95" iso - 406 size - 20 x 1.95 iso - 406 size - 20 x 1.90" iso - 406 size - 20 x 1.9" iso - 406 size - 20 x 1.85" iso - 406 size - 20 x 1.80" iso - 406 size - 20 x 1.75" iso - 406 size - 20 x 1.50" iso - 406 size - 20 x 1.35" iso - 406 size - 20 x 1.25" iso - 406 size - 20 x 1.00" iso - 406 size - 20 x 1.125" iso - 406 size - 20 x 2.1" iso - 451 size - 20 x 1 3/8" iso - 451 size - 26mm x 451 iso - 451 size - 20 x 1-1-8" iso - 451 size - 20 x 1 1/8" iso - 451 size - 20 x 1-1/8" iso - 451 size - 20 x 1-3/8" iso - 490 size - 500A iso - 507 size - 24 x 2.5" iso - 507 size - 24 x 2.10" iso - 507 size - 24 x 2.125 iso - 507 size - 24 x 2.125" iso - 507 size - 24 x 2.20" iso - 507 size - 24 x 2.25" iso - 507 size - 24 x 2.35" iso - 507 size - 24 x 2.50" iso - 507 size - 24 x 2.70" iso - 507 size - 24" iso - 507 size - 24" x 1.95" iso - 507 size - 24 x 2.30" iso - 507 size - 24 x 1.0" iso - 507 size - 24 x 3.00" iso - 507 size - 24 x 1" iso - 507 size - 24 x 2.1" iso - 507 size - 24 x 1.00" iso - 507 size - 24 x 1.25" iso - 507 size - 24 x 1.50" iso - 507 size - 24 x 1.75" iso - 507 size - 24 x 1.85" iso - 507 size - 24 x 1.90" iso - 507 size - 24 x 1.80" iso - 507 size - 24 x 1.95" iso - 507 size - 24 x 2.00" iso - 507 size - 24 x 2.0" iso - 540 size - 24 x 1 3/8" iso - 540 size - 24 x 1 1/8" iso - 540 size - 600 x 25A iso - 540 size - 24 x 1-3/8" iso - 540 size - 24 x 1-1/8" iso - 559 size - 26 x 2.7" iso - 559 size - 26 x 2.35/2.1" iso - 559 size - 26 x 2.14" iso - 559 size - 26 x 2.125" iso - 559 size - 26 x 2.10" iso - 559 size - 26 x 2.1" iso - 559 size - 26 x 2.25" iso - 559 size - 26 x 2.30" iso - 559 size - 26 x 2.35" iso - 559 size - 26 x 2.20" iso - 559 size - 26 x 2.40" iso - 559 size - 26 x 2.5" iso - 559 size - 26 x 2.50 iso - 559 size - 26 x 3.0" iso - 559 size - 26 x 2.60" iso - 559 size - 26" x 2.5" iso - 559 size - 26" iso - 559 size - 26 x 38c iso - 559 size - 26 x 3.00" iso - 559 size - 26 x 2.1 iso - 559 size - 26 x 2.15" iso - 559 size - 26 x 2.50" iso - 559 size - 26 x 1.30" iso - 559 size - 26 x 1.00" iso - 559 size - 26 x 1" iso - 559 size - 26 x 2.06" iso - 559 size - 26 x 2.24" iso - 559 size - 26 x 1.1" iso - 559 size - 26 x 1.25" iso - 559 size - 26 x 2.80" iso - 559 size - 26 x 1.40" iso - 559 size - 26 x 1.50" iso - 559 size - 26 x 2.0" iso - 559 size - 26 x 2.70" iso - 559 size - 26 x 1.10" iso - 559 size - 26 x 2.00" iso - 559 size - 26 x 1.70" iso - 559 size - 26 x 1.95" iso - 559 size - 26 x 1.95 iso - 559 size - 26 x 1.90" iso - 559 size - 26 x 1.85" iso - 559 size - 26 x 1.80" iso - 559 size - 26 x 1.75" iso - 571 size - 650 iso - 571 size - 650 x 20c iso - 571 size - 650 x 23c iso - 571 size - 650 x 25c iso - 571 size - 650 x 28c iso - 590 size - 26 x 1 3/8" iso - 622 size - 700 x 22c iso - 622 size - 700 x 24c iso - 622 size - 700 x 23c iso - 622 size - 700 x 25c iso - 622 size - 700 x 21c iso - 622 size - 700 x 20c iso - 622 size - 700 x 19c iso - 622 size - 700 x 18c iso - 622 size - 700 x 26c iso - 622 size - 28 x 1.50" iso - 622 size - 700 x 30c iso - 622 size - 28 x 1.95" iso - 622 size - 700 x 41c iso - 622 size - 700 x 27c iso - 622 size - 700 x 45c iso - 622 size - 700 x 43c iso - 622 size - 700c iso - 622 size - 700 x 28c or 32c iso - 622 size - 700 x 42c iso - 622 size - 700 x 43 iso - 622 size - 700 x 40c iso - 622 size - 700 x 38c iso - 622 size - 700 x 37c iso - 622 size - 700 x 35c iso - 622 size - 700 x 32c iso - 622 size - 700 x 29c iso - 622 size - 700 x 28c iso - 630 size - 27 x 1 1/4" iso - 630 size - 27 x 1 1/8 3. Choose your rim type (please choose only one)  flat crowned

This method is quick and easy but not as accurate as it may need to be. When in doubt please double check measurements
choosing more than one check box will result in no results