I finally got the mag pattern I liked, I redressed the bit of kerbing issues and set about giving them a new coat of VHF mag wheel paint. They are also the correct 19x9 and 19x10 for this model.
The book shows a plethora of sizes for the 19x10 with the 285/45R19 being the preferred size, I on the other hand had a pair of Kumho Atensa 275/45R19 that were still good for a year or two. The fronts were 255/50R19 and that was also the size fitted. These were new with only 2000km so they were in much better shape too. So I just had the shop fit this combination on to the car.
Here is the rub in this tale, on the drive down the car ran as it has since the fuel filter change, flawlessly. After the tyres were fitted I was driving home and initially thought it was road surface due to roudworks, but this irregular bump feeling at 60km/h-35mph once I got to the Expressway and smooth road surface I accelerated to 100km/h-60mph and in doing so I indeed did feel these bumps throughout the car and it felt like it was drivetrain snatching. However at reaching 100, and set cruise, there was nothing.
There were no warning on the tyre or 4x lights, not even a flash. All four were balanced, so I cannot see that as an issue. SoI am wondering if the rotational value of these tyre sizes is enough to cause problems in the transfer case?
Any thoughts, Jeff