Based on the dimensions that you have mentioned I think the following should help.
Tire | Rim | PCD |
| |
165/80SR14 | 4.5Jx14 ET40 | 4x100 | 2.3 / 2.1 | |
185/65SR15 | 5Jx15 ET40 | 4x100 | 2.5 / 2.2 | |
185/55HR16 | 6Jx16 ET45 | 4x100 | 2.5 / 2.2 |