The Kia K5 replaced the Optima in 2021 and brought sharper styling and improved driving dynamics to Kia mid-size lineup. Available in FWD or AWD, with trims ranging from the value-focused LX to the sport-tuned GT, tire choice follows the trim: touring comfort for daily commuters, sport all-season or summer rubber for GT owners.
Kia K5 tire sizes by trim
The K5 LX uses 225/55R16 on 16-inch wheels. The GT-Line and EX use 235/45R18 on 18-inch wheels. The GT uses 245/35ZR19 front and 245/35ZR19 rear on 19-inch sport wheels. The AWD versions use the same sizes as their FWD counterparts.
The GT is a sport performance sedan with the 2.5T turbocharged engine producing 290 hp — its tire spec reflects that performance level. Always verify your exact size on the door sticker.
Best tires for the K5 LX and EX
Michelin Defender T+H (LX) — the best long-lasting option for K5 LX owners on 16-inch wheels. Treadwear ratings around 800, excellent all-season performance, and competitive pricing. A great match for the K5 commuter.
Continental PureContact LS (EX, GT-Line) — the quietest all-season in 235/45R18. Best for K5 owners who want a refined, quiet daily driver. Very smooth on highway.
Michelin Pilot Sport All Season 4 (EX, GT-Line) — best sport all-season for 235/45R18. If you want the K5 to feel more athletic in corners, this is the tire to buy.
Best tires for the K5 GT
Michelin Pilot Sport 4S — the benchmark summer tire for the GT. The 245/35ZR19 size is available in PS4S. At 290 hp from a FWD platform, the GT benefits enormously from a max-performance summer compound.
Michelin Pilot Sport All Season 4 — for GT owners who want year-round usability without a second set. The PSAS4 in 245/35ZR19 delivers impressive dry performance while handling occasional cold or wet weather.
Frequently asked
What tire size does the Kia K5 use?
K5 LX: 225/55R16. GT-Line and EX: 235/45R18. GT: 245/35ZR19. Verify on the driver door sticker — model year variations exist.
How much do Kia K5 tires cost?
225/55R16: $100 to $150 per tire. 235/45R18: $130 to $190 per tire. 245/35ZR19 (GT): $165 to $250 per tire. A full set of four in 235/45R18 installed runs $520 to $760.
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Last updated 2026-06-27. General guidance only — confirm specifics with a local shop for your exact vehicle.