20 x 1 3/4 size tyres. Now they don't fit normal rims do they......

[mark 2]

Just tried some real os chunk Carlise Aggressor tyres on regualr Ukai Speedline rims. Tyres were about 2cm too big. Size on the side says 20 x 1 3/4  , not the usual 1.75.  Knew that when I bought them, should have realised really from having a few mini bikes.  I'm guessing then its some imperial / metric (?)   fractional / decimal  standardisation thing, like skinny tyres being 1 1/8 or 3/8 and them being a bit bigger in circumference than 1.75's etc.

So what bmx rims are they for?  Saying Schwinn on link below

Anyone know much about this stuff?  Stidds........?


Here's some info....


http://sheldonbrown.com/tire-sizing.html


Back to the drawing board....

[jT Racing]

no.

[toys19]

rim size doesnt define wheel diameter, its the rolling dia of the tyre, thats why 1 3/8th rims are actually bigger than normal rims...

[Jt]

soak em in petrol and put em round the next person who pisses you off's neck...then light them