I don't think they are too wide for my taste. It doesn't appear that they are any more narrow than the full flaps and in hindsight I may have gotten the larger flaps since I live on a gravel road and some rocks/mud still can get past the flaps on to the side of the truck. I've got some Greenlane...
I bought the ARK mid's for this purpose along with the inner fender liner. Will be here Monday so can report back. I also have the stock tires and worried the larger flaps would look weird.
So they fit the SR5 ok then? Just got a 25 SR5 (first new truck) and getting ready to pull trigger on RC rear liners. I've already ordered the Arc mid mud flaps and front wheel liner. I live on a long gravel Rd in WI so much needed protection!