The C stands for concave but there are a ton of differences besides the profile of the face between the Grassor and the Grassor-C.
Studio pics coming in about 1 week.
Shown in 19x10.5 medium concave and 19x11.5 max concave
reverse lip, silver face, high polished barrels, chrome bolts.
The front and rear profiles are different based off of offsets and brakes clearance.