Originally Posted by
joffy
the seal tips of the rotors need replacing, on the flip side they work in a (sort of) circular motion rather than up and down, this means they rev easier and can rev higher (iirc)
It's Mazda's territory really, RX7, RX8 etc.
The above and they also have a higher power output for a equivalent four stoke engine.
So yes they have advantages, but as with every advantage there are always disadvantage(s) the oil consumption being one of them, I believe the fuel consumption isn't brilliant either.
Martin