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!

One New 650 20  700 20 Tube with TR75 Vale Stem for Truck Tires
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Time Remaining: 9h 20m
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New 750 20  750R20 Tube TR177 for Truck Tires FREE Shipping 120620
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New 900 20  900R20 Tube TR175 valve for Truck Tires
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475 65 20 BLEMISHED 4PLY TURF TIRE
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Time Remaining: 3d 17h 8m
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Time Remaining: 7d 13h
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Time Remaining: 7d 14h 42m
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Time Remaining: 7d 15h 50m
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14 20 MICHELIN TRUCK MILITARY GRAIN COMBINE WAGON MANURE SPREADER NICE TIRES
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Time Remaining: 8d 13h 51m
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Time Remaining: 8d 14h 17m
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$126.00
Time Remaining: 9d 13h 59m
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Time Remaining: 9d 15h 20m
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$126.00
Time Remaining: 9d 15h 20m
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2 48 31 20 PRIMEX FLOTATION TIRE TERRA 12 PLY 70 NO RIMS GOOD SET WILL SHIP
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$2,550.00
Time Remaining: 9d 19h 20m
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775 x14 tire and rim 20 tread item1000
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$40.00
Time Remaining: 10d 7h 16m
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Time Remaining: 10d 7h 50m
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Time Remaining: 10d 15h 58m
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$274.00
Time Remaining: 11d 8h 32m
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$13.00
Time Remaining: 11d 14h 57m
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Time Remaining: 12d 14h 38m
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184 30 MULTI TRAC TIRES CASE FORD JOHN DEERE TRACTOR PULL 20
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Time Remaining: 12d 20h 52m
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750 20 TRACTOR AG TIRE TIRES 3 RIB
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$170.00
Time Remaining: 13d 7h 47m
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380 70R20 GOODYEAR DT810 TIRES W RIMS FOR JOHN DEERE COMPACT TRACTORS S91002
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Time Remaining: 13d 14h 43m
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Time Remaining: 14d 12h 52m
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$38.00
Time Remaining: 14d 13h 7m
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2 20x800 10 20 800 10 Compact Garden Tractor Riding Lawn Mower R 1 lug TIRES
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Time Remaining: 14d 15h 30m
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John Deere 3000 Tractor Dual Rim Rims Clamps  Tire 43  16  20 NHS Galaxy
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Time Remaining: 14d 17h 45m
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2 48 31 20 FIRESTONE GOODYEAR FLOTATION TIRE TERRA 10 PLY ON DAYTON RIMS
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Two New 750 20 Vintage Tread Front Tractor Tires and Tubes
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Time Remaining: 18d 17h 14m
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1 48 25 20 FIRESTONE FLOTATION 23 DEGREE TIRE TERRA HIGH FLOTATION 10 PLY
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2 20X1000 10 SMOOTH TURF TIRES GOLF GREENS MOWER FIT JACOBSEN RANSOME JOHN TIRE
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Time Remaining: 19d 16h 22m
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ICC Predator Shivel Grip Grader Loader 1600x20 Tire Chains PN 2624SI
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TWO New 750 20 Lug Farm Tractor Implement Tires and Tubes 8 ply
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184 30 GOODYEAR TRACTOR TIRES CASE FORD JOHN DEERE TRACTOR PULL 20
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Tire Chain Tighteners Adjusters Spring 10 20 Rims 125627
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Tire Chain Tighteners Adjusters Rubber 20 30 Rims 125549
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PoulanPro Rear Tractor Tire Inner Tube PP80006 71525J 18x85 16x95 20x10
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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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Tire Aid 20 18 x 850 900 x 8 Replacement Tractor Inner Tube with Sealant
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B15114281 TIRE Carlisle Turf Handlers Turf Master 20 x 8 x 10
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2 48 25 20 FIRESTONE FLOTATION SAND TIRE TERRA HIGH FLOTATION 10 PLY
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