2018 Kia Optima Wiper Sizes, Bulb Sizes & Tire Sizes
The short answer
The 2018 Kia Optima takes 26" driver and 18" passenger wiper blades, and rides on 205/65R16 tires as standard (LX); S and EX use 215/55R17, SX uses 235/45R18.
Wiper blade sizes
Driver side
26" Shop on Amazon
Passenger side
18" Shop on Amazon
Tire sizes by trim
LX (standard)
205/65R16 95H · 34 psi See tires at Amazon
S, EX
215/55R17 94V · 34 psi See tires at Amazon
SX
235/45R18 94V · 34 psi See tires at Amazon
The size on the placard inside the driver's door jamb is the one your car left the factory with. Match that, not this table, if they differ; a previous owner may have changed wheels.
Bulb sizes
Daytime running
Sealed LED, no replaceable bulb
Front turn signal
2357A Shop on Amazon
Brake light
7528 Shop on Amazon
Tail light
2825 Shop on Amazon
Reverse light
921 Shop on Amazon
License plate
168 Shop on Amazon
Wheel specs and lug torque
Factory wheel sizes
16x6.5, 17x7, 18x7.5
Key fob, battery and sensors
Key fob battery
CR2032 Shop on Amazon
Replacement fob
FCC ID SY5JFRGE04 · part 95430-D4010 · 4-button · flip key Shop on Amazon
Sensor part
52933-D4100 Shop on Amazon
Frequency
433 MHz
Relearn
tool
Dimensions, weight and fuel
Length
191.1" (485 cm)
Width
73.2" (186 cm)
Height
57.7" (147 cm)
Wheelbase
110.4" (280 cm)
Fuel
Gasoline
Octane
87 (regular)
Fuel tank
18.5 gal (70 L)
Worth knowing about the 2018 Optima
- Wipers. Rain-X lists 9x3 hook arms for both front blades.
- LED lighting. The daytime running is a sealed LED unit with no user-replaceable bulb. A failure means replacing the assembly.
- Bulbs. The high beam is a 9005 on single-projector headlamps and an H7 on dual-projector headlamps, the low beam is a 9005 or an H7 depending on headlamp type, and LED headlamps and taillamps are sealed units.
- No spare. This vehicle shipped without a spare tire; it carries an inflator and sealant kit instead. Keep the kit in date, or carry a compact spare. Inflator kits on Amazon →
- Tire chains. The manual permits chains or cables of SAE Class S (low clearance), on the drive wheels only, fitted to the standard tire size. Chains for this size on Amazon →
- Tires. Most trims carry a tire mobility kit and the SX a compact spare, and the manual calls for SAE Class S chains on the front tires only and forbids chains on aluminum wheels.
- Wheels. The owner's manual gives the wheel nut torque as a range, 79 to 94 lb-ft (107 to 127 Nm), rather than a single figure.
- TPMS. New sensors on this car need a relearn (tool); they will not pair on their own by driving.
- Key fob. Match the FCC ID (SY5JFRGE04) printed on the back of your fob when buying a replacement; the same car can use two fob designs in one year. A new fob still needs programming to the car.
- Key fob. EX and higher trims have a push-button smart key instead.