From the MPAA website:
R - Restricted. Children Under 17 Require Accompanying Parent or Adult Guardian. An R-rated motion picture, in the view of the Rating Board, contains some adult material. An R-rated motion picture may include adult themes, adult activity, hard language, intense or persistent violence, sexually-oriented nudity, drug abuse or other elements, so that parents are counseled to take this rating very seriously. Children under 17 are not allowed to attend R-rated motion pictures unaccompanied by a parent or adult guardian. Parents are strongly urged to find out more about R-rated motion pictures in determining their suitability for their children. Generally, it is not appropriate for parents to bring their young children with them to R-rated motion pictures.
the rating is R
It was released with an R rating.
the rating of StreetDreams is R
The rating is R.
In the tire rating, P195 70R14, the R stands for radial.
The insulation rating for the garage is R-13.
It is rated R
restricted
In order for a film to get an R rating in terms of sexual content, you have to cram a lot of sex in there.
"Iron Sky" has an "R" rating for language and some violence .
it is rated R
Rated R