this just dawned on my last night as I was reading about saddle fitment from Cervelo "THE FOUR AND A HALF RULES OF ROAD SADLES" http://www.cervelo.com/en/engineering/a ... dles-.html
specifically on the portion: "Saddle width rule of thumb" section i got to thinking.. by following the measurement suggested then add 2cm or 20mm to the overall center to center measurement, my seatbone measures to 134.62mm (5.3 in.).
so ideally, the '12 toupe pro in 155mm i'm testing out on should work, but it doesn't. i measured the saddle width and in fact it's 155mm or 6.1 inches wide. BUT, here's the kicker.. it's almost towards the end of the saddle where the silver plastic wing sticks out from. also, when it's near the 155mm mark, each side of the saddle (wing part) begans to slope downwards. thus if my seatbone is sitting all the way at the back of the saddle and in between those area, then essentially, my seatbone will be resting towards the sloping part of the wing. which in turns means more pressure to perineum; even with the cutout.
i did a quick diagram here: http://img853.imageshack.us/img853/7139/63021915.jpg
* the red line is the overall width of the saddle; let's assume it's 155mm
* the green line is where my seatbone would rest
the above theory would work as long as the wing part of the saddle doesn't start to slope down and if the width can be more forward rather than backwards.
so that's why i'm thinking maybe the romin pro 2013 with 168mm might work better, since if the wing part does slope down, then at least i know based on my seatbone width, it will be supported on the flat portion of the saddle instead.
i know the only way to test out this theory is to try it.. but it seems only romin offers it in 168mm.. not sure about other companies out that offers such a wide saddle for road bike.
but what do you guys think of my theory.. plausible?