Topic: New Front Tire Help

[tinyrobot]

I ordered some new BT45s for the front and back wheels I have for my CB750 k8.  They are Alloy DID rims.  The rear had a tire on it so that was a no brainer on the size.  The front was bought with the description "1970 CB750 Aluminum Rim"  Before I ordered I measured the rim dia. edge to edge and got 19", so figured it was a 19" rim.

I got the tire today and the front rim floats inside the tire.  I have included some pictures to show you what I mean.  I was under the impression that these would not just slide on.  Figuring like with bike tires they will need to stretch a little to seat on the rim.

What is the correct way to measure the rim?  I think this front is really a 18"  I hope they let me exchange this and the tube no problems 

[TwoTired]

Before I ordered I measured the rim dia. edge to edge and got 19", so figured it was a 19" rim.

What is the correct way to measure the rim?  I think this front is really a 18"  I hope they let me exchange this and the tube no problems 

Measure across the diameter of the wheel from tire bead seat to bead seat.

Cheers,

[tinyrobot]

Well measuring below the lip to where I think the seat is it is 18".  I feel pretty stupid right now.  At least they excepted my return request for exchange.