2018 AMG GTR. I drive it on the street and on the track. For the track I use Nankang CRS V2 tires and they liven up the car, have great grip, durability, and predictability at a reasonable price point. For light to moderate rain conditions on the track they perform well enough that a set of "wets" is not required. I have these track oriented tires mounted on a set of stock RXC3 AMG Performance 5-twin-spoke forged wheels 19/20”
My street tyres are a fairly new set of PSC2s. They are OK on the street but not good on wet surfaces and terrible in pouring rain (yes, I drive my car in all sorts of conditions). I understand these are a "compromise" tire, with a lean to dry performance. When they wear off, and they probably will soon because they will not last long with my current track focused alignment, I want to change them up.

I am seeking a recommendation for ALL WEATHER tyres for the road, something that will be quiet, comfortable, good enough for driving mostly within speed limits and street side loads, good longevity, safe in moderate to heavy rain conditions. These will go mounted on a second set of RXC3 AMG Performance 5-twin-spoke forged wheels 19/20” so it is important to get a brand and model that supports both required sizes. and I prefer that they be available in the US.

I understand your dilemma—it’s frustrating that there are limited options for 275/35ZR19 on 10J and 325/30ZR20 on 12J wheels.

I’m not sure about the temperature and weather conditions in your area, but living in the NY/NJ region, I ended up with three sets of wheels: track, summer, and winter, all based on Michelin tires.

For summer, I’ve used Michelin Pilot Sport 4S in 285/35ZR19 and 345/30ZR20, and I’m currently running Michelin Pilot Super Sport in 275/35ZR19 and 335/30ZR20. While many people swear by the 4S, I personally find the Super Sport better in wet conditions.
Both tires, however, aren’t particularly quiet due to their wider contact patch, and they don’t perform well when temperatures drop below 40°F—that’s when I switch to my winter set.

For winter, I use Michelin Alpin PA4 in 265/35R19 and 335/25R20. These are incredible tires with outstanding grip at lower temperatures (below 65°F); they feel as sticky as you feel with Sport Cup 2 on a hot summer day.
Unfortunately, Michelin discontinued several sizes, including the 335, making it harder to find options that fit a 12J rim. The only alternative I’ve found that can fit a GTR are 265/35R19 10J and 305/30R20 which requires a 11.5 rim (by Michelin recommendation)

Hey, how was the 285/35/19 and 345/30/20 for you? I currently have 325/25/20 at the back and while it's OK I think I want to go to 30. Thanks