4.5 Prime
On page 387 of the owners manual, it states, "Tire chains cannot be mounted on vehicles with 235/55R19 tires."
Owners Manual:
OM42C07U.pdf (toyota.com)
Thus, if you need added winter traction devices, what are the realistic options:
1. Snow Cables
2. Nothing
3. Studded Tires
4. other option?