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.htmlBack to the drawing board....
