Please indicate how to convert 1988 FC SE 14", 4 lugs to 15" with 5 lugs. Do I use a spacer to accommodate 5 lugs? Following wheel link fits my car, but it requires 5 lugs:

Raceline Matrix 15x7 40 Silver | 146S-57084+40 | 1988 Mazda Rx 7 Se Rwd | Fitment Industries

 

Please confirm following is correct:

To convert a 1988 FC SE (Mazda RX-7) from its original 14" 4-lug wheels to 15" wheels with a 5-lug pattern, you'll need to replace the hubs, brake rotors, and potentially the wheel studs. The 1988 FC SE has a 4x114.3mm bolt pattern, while the 15" wheels you're aiming for likely have a 5x114.3mm or 5x100mm bolt pattern. Here's a breakdown:

• Hubs:
  You'll need to replace the front and rear hubs with 5-lug hubs. These hubs will have the correct bolt pattern for your 15" wheels.
• Rotor & Caliper:
  You'll need to upgrade the brake rotors and calipers to match the 5-lug hubs. You might also need to swap out the brake lines.
• Wheel Studs:
  If your current wheel studs are not compatible with the new hubs, you'll need to replace them with 5-lug wheel studs.
• Lug Nuts:
  Ensure you have lug nuts that are compatible with the 5-lug wheel pattern.

 

Get a set of 5 lug hubs and put them on with new bearings. Download a copy of the FSM and follow the procedure.

The easiest way will be to get a set of front and rear knuckles from someone who’s parting out and put them on. The downside is the bearings are old.