4 pot versus 6 pot calipers

[Ant]

JGC,

Looking at down to earth price calipers Wilwood they have these two calipers which have identical pads, but slightly different area due to number and size of pistons, so I have just added up the sizes which may be wrong but they come out quite close in area?

6 Pot, 1.62, 1.12, 1.12 = 3.86
4 Pot, 1.88, 1.75 = 3.63

This makes a difference with the 6 pot being slightly bigger in piston area of .23, I wonder whether this would actually be noticed if you changed calipers on a test track!!!

Another issue is cooling some say put the largest pad caliper on your car but this can inhibit the rotor/caliper to cool, so I am wondering whether big is better, or just a bit more than you need is good! I have 17" wheels and could fit 14" rotors, but unless it is a skinny rotor the unsprung weight just goes up.

I looked at AP Calipers and could have got some 2nd/hand from an Aussie Supercar, but they are a bit wide for my application, wilwood seem to cater for different needs at a good price better than their more expensive competitors, I cant see the point in spending USD$3500 on an AP or Alcon when a $400 - $600 Wilwood should give good service.