33X18

so...
I thought I was pushing a 32X19 in the woods on my Single Speed
as it turns out
I had been pushing a 33X19 all along

in my right hand in this image you can see what has become the rear triangle of my bakfiet
it was this frame that allowed me to make my bike a
69er Bakfiet
a 29er Rear Wheel... with a 26 inch front wheel