Yz2 and yz4 rears are the same offset as AE 12mm hex. Kyosho rears are about 1mm wider at the wheel offset, so the car may be upto 2mm wider fitting in the brca box than with yokomo wheels. The recent yokomo cars are not at the width limit anyway, so should fit in the BRCA box with the kyosho wheels. if there was an issue, you could use a 5mm hex instead of the standard 6mm hex, which would compensate.
Yz2 fronts are again the same offset at AE b5m wheels. I think kyosho are similar, but not directly compared. they will fit, thats for sure.
Yz4 Fronts, the kyosho's should fit ok, but i've again not personally compared the offsets.
Schumachers hex wheels also fit fine on the yokomo cars.
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