As discussed in previous threads I am changing the wheels on my 32 Vicky. Tires are available in the daimeter and width I want to run with either 15" all four, 16" all four or a combination of 15" front 16" rear. Wheels will be unpolished kidney been Halibrand look a likes from Vintagewheel. Is there a purpose/advantage to running 15 front 16 rear. If not I will most likely run 16 on all four! Because I am not changing tire diameter to accomplish rake, I'm just not sure which would be best.