Put the RT43's on the 300 about 2,000 miles ago, have been generally impressed with them. They are the 245/45r20 V speed rated and the 300 is RWD. The county we moved to seems to operate on a "we'll deal with the snowy roads when it stops snowing" mentality, which is 100% fine with me! Everything was snow covered like what you see in my picture, and late enough out that people really weren't out driving even on the more major roads.
All in all, I'm quite content with these tires. I wasn't expecting miracles, I'd get proper snow tires for that, but they impressed me nonetheless. The previous tires, Ironman iMove Gen2 AS (courtesy of Carmax), were a complete joke in the snow. Anything more than idle, they'd slip. Anything more than coasting would activate ABS under braking. I can actually accelerate, brake, and turn now.
I then added 320lbs of water softener salt to the trunk, which kills 3 birds with one stone. Traction improved a little under acceleration and braking, I now have what I think is an obscene amount of water softener salt for a 4 person family (someone let me know if I'm wrong about this), and if I absolutely need it I can use it for traction. Struggled a bit getting out of the driveway, as it slopes up towards the road, but it managed.
Dry and wet traction are great otherwise, they're nice and quiet, and I've accidentally bombed through a few big puddles before learning where the roads pool without hydroplaning.
TL;DR version: v rated RT43's have great wet and dry traction, and good snow traction. I'll be buying a set for the van when it's time.
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