Wheel size

[Turtltim]

Hello all,

I just entered the world of Strida last week. I bought a 2012 brushed aluminum Strida SX. So far i am in love with it. I had one question about wheel size though. My bike is an SX which is supposed to have 18" wheels although mine measure- actual wheel 14.5", with inflated tire 16.5". I have the schwalbe kojaks 18x1.25. These are alloy and spoked and the dealer said they are the correct wheels…how do you get an 18" wheel size out of 16.5"? I just don’t get it…

[Blackstridaaustria]

Hello Turtltim,

!

You’re right, rim and tire sizing is weird!

@Sheldon Brown

The traditional sizing systems are based on a measurement of the outside diameter of a tire. This would usually be measured in inches (26", 27", etc.) or millimeters (650, 700, etc.).

Unfortunately, evolution of tires and rims has made these measurements lose contact with reality. Here’s how it works:

Please read more here:

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

[Turtltim]

Thanks! But I think I’m more confused now…hahaha.

[Blackstridaaustria]

Well…I’m sorry

Does it help to know that you have got the correct SX tyre size which has an approx. diameter of 16,5 "?

16" Strida wheels have a rim diameter of actually ~ 12,6"

[Turtltim]

Thanks, I’m happy just that I have a Strida…this things going to be fun!

[Blackstridaaustria]

Have much fun, a safe ride…
…and please share your experience with us

[Chester_Tan]

16" spoke wheels have 24 spokes while the 18" wheels have 36 spokes. Just another way to differentiate.