I don't think that this is as critical as they say. There is allways a difference in the rolling dia of the wheels, Due to wear, weight change when cornering, air pressure, front to rear 60/30 weight bias, etc.
From memory the TCU considers anything below a 20% difference as cornering. So only applies a small additional pressure to the clutch.
I mean don't run different tyres side to side or front to back. Also use 2psi. more pressure in the front than the rear. There should not be a problem.
Harvey.
