Join Date: Aug 2007
Location: Staunton, VA - USA
Regardless of who might produce them, it's a matter of availability where you live.
You should have no issue with a 235-75R15, as that's what I've been using on both of my SY cars for years now without issue. There is no "statistically significant" difference with regard to speedometer reading, either.
Since the Corniche II is still SY body work on SZ internals the wheel wells are the same size as they were on the SY series cars.
The opposite of a correct statement is a false statement. But the opposite of a profound truth may well be another profound truth. ~ Niels Bohr