2018 Kia Optima Wheel & Tire Sizes
Complete fitment guide for the 2018 Kia Optima: factory tire sizes, compatible wheel diameters, widths and offsets, and the 5x114.3 bolt pattern — for every trim.
Bolt Pattern
5x114.3
Centre Bore
67.1 mm
Lug nuts
M12 x 1.5
Torque: 107 - 127 Nm
TPMS
433 MHz
Factory (OEM) Tire Sizes for the 2018 Kia Optima
Click any size to shop tires in stock now — free shipping anywhere in Canada, optional installation at our 5 GTA locations.
2018 Kia Optima Wheel Fitment by Trim
Compatible wheel diameter, width and offset ranges for each 2018 Kia Optima configuration.
1.6 T-GDi · Saloon
1.6L · I4 · Petrol
| Spec | Front & Rear |
|---|---|
| Wheel diameter | 16–20" |
| Wheel width | 6.5–9" |
| Wheel offset | 35–48 mm |
| Tire width | 205–235 mm |
2.0 GDi HEV · Saloon
2.0L · I4 · Hybrid
| Spec | Front & Rear |
|---|---|
| Wheel diameter | 16–20" |
| Wheel width | 6.5–9" |
| Wheel offset | 35–48 mm |
| Tire width | 205–235 mm |
2.0 GDi PHEV · Saloon
2.0L · I4 · Hybrid
| Spec | Front & Rear |
|---|---|
| Wheel diameter | 17–20" |
| Wheel width | 7–9" |
| Wheel offset | 35–48 mm |
| Tire width | 215–235 mm |
2.0 T-GDi · Saloon
2.0L · I4 · Petrol
| Spec | Front & Rear |
|---|---|
| Wheel diameter | 17–20" |
| Wheel width | 7–9" |
| Wheel offset | 35–48 mm |
| Tire width | 215–235 mm |
2.4 GDi · Saloon
2.4L · I4 · Petrol
| Spec | Front & Rear |
|---|---|
| Wheel diameter | 16–20" |
| Wheel width | 6.5–9" |
| Wheel offset | 35–48 mm |
| Tire width | 205–235 mm |
2018 Kia Optima Fitment FAQ
What is the bolt pattern on a 2018 Kia Optima?
The 2018 Kia Optima uses a 5x114.3 bolt pattern (5 lug nuts on a 114.3 mm circle) with a 67.1 mm centre bore.
What size tires fit a 2018 Kia Optima?
Factory (OEM) tire sizes for the 2018 Kia Optima include 205/65R16, 215/60R16, 215/55R17, 235/50R17, 235/45R18, 235/40R19. Always confirm against the placard inside the driver's door jamb.
What wheel sizes can I put on a 2018 Kia Optima?
Depending on trim, the 2018 Kia Optima accepts wheels from 16" up to 20" in diameter with the correct width and offset — larger diameters typically require lower-profile tires to keep the overall rolling diameter stock.
What lug nut size does a 2018 Kia Optima use?
The 2018 Kia Optima uses M12 x 1.5 lug nuts, torqued to 107 - 127 Nm.
Fitment data is provided as a guide. Always verify sizes against your vehicle's door-jamb placard or with our fitment experts before ordering.