I’m aware of the general differences between grizzlies and brown bears (the latter now have populations where I live.) But these bears were across the road, and I wasn’t about to get out of the car to make sure what they were. They were very large however and did look like grizzlies.
I didn’t know if you lived in bear country or just traveling through. Parts of Texas have mountains lions but no bear( that I know of ) I don’t want to live near neither one .