20 Tire

How to measure bicycle shops bicycle sizes /? ie.16 ", 20", etc. Is it the tire to the outside or inside edge or what?

I need to get a new bike for my 6 years old soon. He is on the longest side of a year, nearly 6 years (not fat, just built) and I have no idea on how to measure its current bike to get the size for her birthday next week next. Please help!

Kid's and adult bikes are measured differently, btw. For children, the diameter wheel, which can be printed on the tire sidewall. If not, measure the outside of the tire from one side to the other - Children's bikes are either 12 ", 16", 20 "or 24", so there is enough variation that you will be able to tell fairly easily as one is his. Look at your son's inseam measurement to determine what size to do it. And happy birthday to him!

B1TI551 New Universal 20 x 8 x 8 Carlisle Turf Handlers Multi Trac Tire
B1TI551 New Universal 20 x 8 x 8 Carlisle Turf Handlers Multi Trac Tire
$103.00
Time Remaining: 3h 16m
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184 30 MULTI TRAC TIRES CASE FORD JOHN DEERE TRACTOR PULL 20
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Time Remaining: 9h 30m
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ONE USED 48 310020 Speader 12 Ply Goodyear Tire on Used Wheel
ONE USED 48 310020 Speader 12 Ply Goodyear Tire on Used Wheel
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ONE Used 1600R20 MICHELIN Mobile Crane Tubeless Turf Tire
ONE Used 1600R20 MICHELIN Mobile Crane Tubeless Turf Tire
$500.00
Time Remaining: 10h 12m

TWO 41 1400x20 Kubota John Deere Mighty Mow Galaxy 4 Ply Tubeless Turf Tires
TWO 41 1400x20 Kubota John Deere Mighty Mow Galaxy 4 Ply Tubeless Turf Tires
$400.00
Time Remaining: 1d 1h 27m

2 New 900 20 3 rib Farmall Front Tractor Tires  Tubes sub for 950 20
2 New 900 20 3 rib Farmall Front Tractor Tires Tubes sub for 950 20
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Time Remaining: 1d 7h 53m
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TWO 43 1600x20 R4 Titan John Deere 750 Convert Turf Tires to R4 Lug Tires
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One new 20 x 5 Flap for 600 20 650 20  700 20 antique truck tires
One new 20 x 5 Flap for 600 20 650 20 700 20 antique truck tires
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Time Remaining: 2d 1h 31m
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2 20x800 10 20 800 10 Compact Garden Tractor Riding Lawn Mower R 1 lug TIRES
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TWO Used 44 1800x20 Titan Turf John Deere 4520 Tractor Tires on Used Wheels
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Time Remaining: 2d 4h 12m

TWO 750X20 750 20 Six ply Triple Rib Farm Tractor Tires with Tubes
TWO 750X20 750 20 Six ply Triple Rib Farm Tractor Tires with Tubes
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Time Remaining: 2d 22h 44m

750 20 TRACTOR AG TIRE TIRES 3 RIB
750 20 TRACTOR AG TIRE TIRES 3 RIB
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Time Remaining: 5d 7h 44m
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8 Tires315 80R225 L 20 154 151M All PositionDrive Truck Tire 31580225100
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44X1800 20 4PLY BLEMISHED TURF TIRE
44X1800 20 4PLY BLEMISHED TURF TIRE
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Time Remaining: 5d 20h 13m
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32 12 15 20PLY BLEMISHED MINING TIRE
32 12 15 20PLY BLEMISHED MINING TIRE
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Time Remaining: 6d 1h 54m
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41X1400 20 BLEMISHED MULTI TRAC TURF 4PLY TIRE
41X1400 20 BLEMISHED MULTI TRAC TURF 4PLY TIRE
$100.00
Time Remaining: 6d 4h 26m
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1 48 25 20 FIRESTONE FLOTATION 23 DEGREE TIRE TERRA HIGH FLOTATION 10 PLY
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355 30D20 TIRE W 8 BOLT 6 RIM
355 30D20 TIRE W 8 BOLT 6 RIM
$30.00
Time Remaining: 6d 23h 41m
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900 20 TIRE W 5 BOLT 2 3 4 RIM
900 20 TIRE W 5 BOLT 2 3 4 RIM
$30.00
Time Remaining: 7d 1h 16m
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925 20 TIRE W 12 BOLT 4 1 2 RIM
925 20 TIRE W 12 BOLT 4 1 2 RIM
$30.00
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ICC Predator Shivel Grip Grader Loader 1600x20 Tire Chains PN 2624SI
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Time Remaining: 8d 30m
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2 Tires Carlisle Turf Saver 20 x 8 x 8 WITH RIMS
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$160.00
Time Remaining: 8d 19h 3m
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1 New 750 20 Speedways 3 Rib Front Tractor Tire fits John Deere FREE Shipping
1 New 750 20 Speedways 3 Rib Front Tractor Tire fits John Deere FREE Shipping
$215.00
Time Remaining: 8d 21h 32m
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1 New 750 20 Speedways 3 Rib Front Tractor Tire fits Farmall FREE Shipping
1 New 750 20 Speedways 3 Rib Front Tractor Tire fits Farmall FREE Shipping
$215.00
Time Remaining: 8d 21h 37m
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New 750 20 Speedways 3 Rib Front Tractor Tire fits International FREE Shipping
New 750 20 Speedways 3 Rib Front Tractor Tire fits International FREE Shipping
$215.00
Time Remaining: 8d 21h 39m
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Tire Chain Tighteners Adjusters Spring 10 20 Rims 125627
Tire Chain Tighteners Adjusters Spring 10 20 Rims 125627
$12.00
Time Remaining: 9d 21h 49m
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Tire Chain Tighteners Adjusters Rubber 20 30 Rims 125549
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IH International Farmall McCormick I 6 Front 20 Inch Castings  Tires In MN
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Time Remaining: 10d 1h 48m
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6 Tires315 80R225 L 20 154 151M All PositionDrive Truck Tire 31580225100
6 Tires315 80R225 L 20 154 151M All PositionDrive Truck Tire 31580225100
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Time Remaining: 10d 13h 43m
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4 Tires315 80R225 L 20 157 154M All Position Truck Tire 31580225366 766 668
4 Tires315 80R225 L 20 157 154M All Position Truck Tire 31580225366 766 668
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Time Remaining: 10d 16h 12m
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Ford 8N 600 800 NAA Ferguson TE20 TO30 Tractor 4 X 19 Tire New 3 x 19 Wheel Rim
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$84.22
Time Remaining: 10d 19h 47m
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8 Tires315 80R225 L 20 157 154M All Position Truck Tire 31580225366 766 668
8 Tires315 80R225 L 20 157 154M All Position Truck Tire 31580225366 766 668
$2,488.00
Time Remaining: 11d 4h 40m
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95 20 95x20 LRC 8 ply BKT TR135 R1 AG LUG Tractor Tire Tube with FREE SHIP
95 20 95x20 LRC 8 ply BKT TR135 R1 AG LUG Tractor Tire Tube with FREE SHIP
$280.00
Time Remaining: 11d 8h 41m
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105 LR12 5LR 18 20 Farm Tractor Tire Inner Tube Radial or Bias
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$30.00
Time Remaining: 13d 29m
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B15114281 Tire Carlisle Turf Handlers Turf Master 20 x 8 x 10
B15114281 Tire Carlisle Turf Handlers Turf Master 20 x 8 x 10
$104.69
Time Remaining: 13d 9h 39m
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2 48 25 20 FIRESTONE FLOTATION SAND TIRE TERRA HIGH FLOTATION 10 PLY
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Time Remaining: 14d 4h 43m
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2 42 25 20 PRIMEX FLOTATION TIRE TERRA HIGH FLOTATION 16 PLY NEW NEVER MOUNTED
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$4,000.00
Time Remaining: 14d 4h 51m
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Two New 750 20 Vintage Tread Front Tractor Tires and Tubes
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$298.00
Time Remaining: 14d 4h 57m
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750 20 TIRE W 8 BOLT 5 3 4 RIM
750 20 TIRE W 8 BOLT 5 3 4 RIM
$30.00
Time Remaining: 14d 21h 13m
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Voltyre 112 20 tires BRAND NEW
Voltyre 112 20 tires BRAND NEW
$250.00
Time Remaining: 15d 1h 50m
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B1TI405 Tire Carlisle Turf Handlers Turf Master 20 x 10 x 8
B1TI405 Tire Carlisle Turf Handlers Turf Master 20 x 10 x 8
$126.65
Time Remaining: 15d 11h 49m
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TWO New 750 20 BKT AS 504 Lug Farm Tractor Implement Tires and Tubes 8 ply
TWO New 750 20 BKT AS 504 Lug Farm Tractor Implement Tires and Tubes 8 ply
$308.00
Time Remaining: 15d 21h 33m
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FOUR BKT TR 171 Deep Tread Farm Tractor Tire 112x20
FOUR BKT TR 171 Deep Tread Farm Tractor Tire 112x20
$1,375.00
Time Remaining: 15d 22h 19m
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2 48 25 20 FIRESTONE RIB TIRE TERRA HIGH FLOTATION 10 PLY
2 48 25 20 FIRESTONE RIB TIRE TERRA HIGH FLOTATION 10 PLY
$1,200.00
Time Remaining: 16d 5h 16m
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41X400 20NHS TIRE W 6 BOLT 5 1 4 PILOT HOLE
41X400 20NHS TIRE W 6 BOLT 5 1 4 PILOT HOLE
$400.00
Time Remaining: 16d 22h 26m
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One New 650 20  700 20 Tube with TR75 Vale Stem for Truck Tires 120610
One New 650 20 700 20 Tube with TR75 Vale Stem for Truck Tires 120610
$38.00
Time Remaining: 17d 21h 59m
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New 750 20  750R20 Tube TR177 for Truck Tires FREE Shipping 120620
New 750 20 750R20 Tube TR177 for Truck Tires FREE Shipping 120620
$35.00
Time Remaining: 17d 22h 18m
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New 825 20 825R20 Radial Tube TR77 valve for Truck Tires FREE Shipping 120630
New 825 20 825R20 Radial Tube TR77 valve for Truck Tires FREE Shipping 120630
$32.00
Time Remaining: 17d 22h 22m
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New 900 20  900R20 Tube TR175 valve for Truck Tires FREE Shipping 120640
New 900 20 900R20 Tube TR175 valve for Truck Tires FREE Shipping 120640
$35.00
Time Remaining: 17d 22h 24m
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New 1000 20  1000R20 Tube TR78 valve for Truck Tires FREE Shippig 120650
New 1000 20 1000R20 Tube TR78 valve for Truck Tires FREE Shippig 120650
$38.00
Time Remaining: 17d 22h 27m
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TWO TIRES 400 15 F2 Three Rib tractor FRONT tires With TUBES Free Shipping
TWO TIRES 400 15 F2 Three Rib tractor FRONT tires With TUBES Free Shipping
$117.95
Time Remaining: 18d 10h 35m
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B1TI551  Tire Carlisle Turf Handlers Multi Trac 20 x 8 x 8
B1TI551 Tire Carlisle Turf Handlers Multi Trac 20 x 8 x 8
$104.69
Time Remaining: 18d 11h 13m
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1 125L 20 Firestone Ag Tractor Traction Tire Power Implement I 3 4 Ply 314676
1 125L 20 Firestone Ag Tractor Traction Tire Power Implement I 3 4 Ply 314676
$190.00
Time Remaining: 19d 6h 9m
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6 Tires315 80R225 L 20 157 154M All Position Truck Tire 31580225366 766 668
6 Tires315 80R225 L 20 157 154M All Position Truck Tire 31580225366 766 668
$1,914.00
Time Remaining: 19d 8h 6m
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400 15 F2 Three Rib FRONT Tractor Tire With TUBE new Free Shipping
400 15 F2 Three Rib FRONT Tractor Tire With TUBE new Free Shipping
$68.75
Time Remaining: 19d 9h 53m
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ONE 750X20 750 20 Six ply Triple Rib Tractor Tire with Tube
ONE 750X20 750 20 Six ply Triple Rib Tractor Tire with Tube
$137.00
Time Remaining: 19d 22h 36m
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2 New 900 20 3 rib John Deere Front Tractor Tires  Tubes sub for 950 20
2 New 900 20 3 rib John Deere Front Tractor Tires Tubes sub for 950 20
$790.00
Time Remaining: 20d 3h 53m
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implement farm tractor TUBE for 83 20 95 20 tire
implement farm tractor TUBE for 83 20 95 20 tire
$37.95
Time Remaining: 20d 8h 25m
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B1KT114  Tire Kenda Turf 505 K505 20 x 10 x 8
B1KT114 Tire Kenda Turf 505 K505 20 x 10 x 8
$78.17
Time Remaining: 20d 10h 59m
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B1KT122 Tire Kenda Turf Rider K358 20 x 8 x 8
B1KT122 Tire Kenda Turf Rider K358 20 x 8 x 8
$69.35
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B1KT7202 Tire Kenda Turf Rider K358 20 x 10 x 8
B1KT7202 Tire Kenda Turf Rider K358 20 x 10 x 8
$74.55
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6 Tires 385 65R225 L 20 160K BW New Drive Truck Trailer Tire 38565225 397
6 Tires 385 65R225 L 20 160K BW New Drive Truck Trailer Tire 38565225 397
$2,250.00
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8 Tires 385 65R225 L 20 160K BW New Drive Truck Trailer Tire 38565225 397
8 Tires 385 65R225 L 20 160K BW New Drive Truck Trailer Tire 38565225 397
$2,960.00
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4 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
4 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
$1,780.00
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6 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
6 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
$2,610.00
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8 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
8 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
$3,448.00
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112 20 Turf Tires Set of two
112 20 Turf Tires Set of two
$450.00
Time Remaining: 20d 18h 9m
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B1SB302  Tire Heavy Duty Pneumatic 20 x 2125
B1SB302 Tire Heavy Duty Pneumatic 20 x 2125
$15.57
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B1SB7202  Tire Carlisle Turf Handlers Turf Saver 20 x 10 x 8
B1SB7202 Tire Carlisle Turf Handlers Turf Saver 20 x 10 x 8
$110.02
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4 Tires 385 65R225 L 20 160K BW New Drive Truck Trailer Tire 38565225 397
4 Tires 385 65R225 L 20 160K BW New Drive Truck Trailer Tire 38565225 397
$1,520.00
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16 Tires 315 80R225 L 20 157 154M All Position Truck Tire 31580225 366 668
16 Tires 315 80R225 L 20 157 154M All Position Truck Tire 31580225 366 668
$4,960.00
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4 Tires315 80R225 L 20 154 151M All PositionDrive Truck Tire 31580225100
4 Tires315 80R225 L 20 154 151M All PositionDrive Truck Tire 31580225100
$1,316.00
Time Remaining: 22d 11h 18m
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20 Truck Skid Loader Imp Tire Valve Stems Wheel TR501
20 Truck Skid Loader Imp Tire Valve Stems Wheel TR501
$45.00
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2 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
2 Tires 425 65R225 L 20 165J TL New All Position Truck Tire 42565225 R526
$918.00
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B1TI112 Tire Carlisle Big Biters Super Lug 20 x 10 x 8
B1TI112 Tire Carlisle Big Biters Super Lug 20 x 10 x 8
$118.87
Time Remaining: 25d 1h 38m
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B1TI115  Tire Carlisle Turf Handlers Turf Saver 20 x 8 x 10
B1TI115 Tire Carlisle Turf Handlers Turf Saver 20 x 8 x 10
$94.03
Time Remaining: 25d 1h 38m
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