Looks like AMG has 4 different wheel choices to go with the AMG Line CLA's... Here they are:
AMG Light-Alloy Wheels (Code 781)
45.7 cm (18-inch) AMG 5-twin-spoke light-alloy wheels in high-gloss black and with a high-sheen finish, with R 225/40 R18 on 7.5 J x 18 ET52
AMG Light-Alloy Wheels (Code 794)
45.7 cm (18-inch) AMG 5-twin-spoke light-alloy wheels painted in titanium grey with high-sheen finish, 225/40 R18 on 7.5 J x 18 ET52
Standard in conjunction with: AMG Line
AMG Light-Alloy Wheels (Code 646)
45.7 cm (18-inch) AMG multi-spoke light-alloy wheels painted in high-gloss black with a high-sheen rim flange, R 225/40 R18 on 7.5 J x 18 ET52
AMG Light-Alloy Wheels (Code 791)
45.7 cm (18-inch) AMG multi-spoke light-alloy wheels painted in titanium grey with high-sheen finish, 225/40 R18 on 7.5 J x 18 ET52
AMG Light-Alloy Wheels (Code 781)
45.7 cm (18-inch) AMG 5-twin-spoke light-alloy wheels in high-gloss black and with a high-sheen finish, with R 225/40 R18 on 7.5 J x 18 ET52
AMG Light-Alloy Wheels (Code 794)
45.7 cm (18-inch) AMG 5-twin-spoke light-alloy wheels painted in titanium grey with high-sheen finish, 225/40 R18 on 7.5 J x 18 ET52
Standard in conjunction with: AMG Line
AMG Light-Alloy Wheels (Code 646)
45.7 cm (18-inch) AMG multi-spoke light-alloy wheels painted in high-gloss black with a high-sheen rim flange, R 225/40 R18 on 7.5 J x 18 ET52
AMG Light-Alloy Wheels (Code 791)
45.7 cm (18-inch) AMG multi-spoke light-alloy wheels painted in titanium grey with high-sheen finish, 225/40 R18 on 7.5 J x 18 ET52