Published by Rims & Tires
Compiled & checked by the site's publisher from manufacturer, NHTSA & USTMA data · Updated 2026-07-24
The Kia K5 replaced the Optima in 2021 and brought sharper styling and improved driving dynamics to Kia's 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 205/65R16 on 16-inch wheels. The GT-Line and EX use 235/45R18 on 18-inch wheels. The GT uses 245/40R19 on all four corners (square, not staggered) on 19-inch sport wheels. AWD trims often step up to the larger 18-inch fitment even where the FWD equivalent runs 16-inch wheels — check your door sticker.
The GT is a sport performance sedan with the 2.5T turbocharged engine producing 290 hp, and 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.
West Georgia Local
Find the right shop near you
Tell us your vehicle and what you need — we'll match you with a vetted West Georgia shop. Free, no obligation.
Best tires for the K5 GT
Michelin Pilot Sport 4S: the benchmark summer tire for the GT. The 245/40R19 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 245/40R19 delivers impressive dry performance while handling occasional cold or wet weather.
Best Tires for the Kia K5 at a glance
| Trim | Tire | Best For |
|---|---|---|
| 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. |
| for the K5 LX and EX | 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. |
| for the K5 LX and EX | 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. |
| for the K5 GT | Michelin Pilot Sport 4S | the benchmark summer tire for the GT. The 245/40R19 size is available in PS4S. At 290 hp from a FWD platform, the GT benefits enormously from a max-performance summer compound. |
| for the K5 GT | Michelin Pilot Sport All Season 4 | for GT owners who want year-round usability without a second set. The PSAS4 in 245/40R19 delivers impressive dry performance while handling occasional cold or wet weather. |
Frequently asked
What tire size does the Kia K5 use?
K5 LX: 205/65R16. GT-Line and EX: 235/45R18. GT: 245/40R19. Verify on the driver door sticker; model year variations exist.
How much do Kia K5 tires cost?
205/65R16: $100 to $150 per tire. 235/45R18: $130 to $190 per tire. 245/40R19 (GT): $165 to $250 per tire. A full set of four in 235/45R18 installed runs $520 to $760.
How do I know when my K5 needs new tires?
The quarter test is the quick check. If you can see the top of Washington's head in the tread grooves, start shopping. Also pay attention if the car starts to feel loose in the rain or the tread looks uneven, which can point to alignment or pressure. Any cracking in the sidewall or a visible bulge means replace it now.
Do I need matched tires on an all-wheel-drive K5?
Yes. On an AWD K5, all four tires should match in brand, model, and tread depth so the system splits power evenly. Big differences in wear make the drivetrain work against itself. If one tire gets ruined early, either match the tread by shaving a new one or plan to replace the set.
Keep reading
Last updated 2026-07-24. General guidance only — confirm specifics with a local shop for your exact vehicle.