Originally Posted by
CMC SanDiego
I've got a 1970 B15, an 80's B17, and a new (6 month old) B17. The B15 appears to be thicker than the others. I'll try to take my calipers to work tomorrow and measure the B15 leather... CMC
The leather on my B15 measures 0.55cm thick on average, compared to 0.49 on the B17. The width of the old B15 is 147cm and the B17 is 155cm.
Even though I ride the B15 more often than any other saddle, I'm still not seeing any deflection or other sign of breaking in. It's not uncomfortable to ride though.