What tire size does the Lexus IS 350 F-Sport use?

The Lexus IS 350 F-Sport (and IS 500 F-Sport Performance) uses a staggered fitment: 245/40R18 on the front and 275/35R18 on the rear. Both sizes produce a nearly identical overall diameter (25.72″ front / 25.58″ rear — only 0.14″ difference), which is within the AWD tolerance. The IS 300 base model and IS 300 AWD use a square 225/45R18 fitment on all four corners.

Can I use a square setup on my IS 350 F-Sport instead of staggered?

Yes, running a square setup (same size front and rear) is popular for IS 350 owners who want to rotate tires and extend tire life. A 245/40R18 on all four corners is the most common square setup — it matches the front stock size, keeps the overall diameter within 0.5% of the rear OEM size, and is compatible with AWD rotation. Many IS owners go square when switching to summer or winter performance tires.

What is the Lexus IS, ES, NX, and RX bolt pattern?

The IS, ES, NX, and RX all use a 5×114.3 bolt pattern with a 60.1mm hub bore and 76 ft-lb lug nut torque. This means wheels are cross-compatible between these models, provided the offset and diameter are appropriate for each application. Note that the GX and LX use a different 6×139.7 bolt pattern and are not compatible with IS/ES/NX/RX wheels.

What tire size should I use for a Lexus IS winter set?

For the IS 350/500 staggered setup, most owners go to a square 225/45R17 on a 17×8 ET35 wheel for winter — this drops to a taller sidewall for better snow traction and reduces wheel cost. For the IS 300 AWD, 225/45R17 or 215/45R17 on 17×7.5 works well. The smaller diameter (24.59″ vs 25.72″) is fine for seasonal use on a dedicated second set, but both front and rear must match exactly.

Does upgrading to a plus-1 or plus-2 affect AWD on Lexus hybrid models?

Yes — for the NX 450h+ (PHEV) and RX 450h+ (PHEV), Lexus recommends keeping all four tire diameters within ±1% of stock. Even a plus-1 upgrade (e.g., 245/50R19 on the NX) is typically fine because the diameter change is small (+2–3%). The key risk is mixing different sizes front and rear, or fitting only two tires on one axle with mismatched tread depth. Always replace all four tires simultaneously on AWD Lexus hybrids.

What is the tire size for the Lexus NX 250 and NX 350h?

The NX 250 and NX 350h use 235/55R18 on 18-inch wheels. The NX 350 F-Sport and NX 450h+ (PHEV) upgrade to 235/50R19 on 19-inch wheels. Both sizes produce nearly the same overall diameter (28.18″ and 28.25″ respectively), so the speedometer calibration stays consistent across NX trims.

What tire size does the Lexus RX 350 use?

The 2023+ Lexus RX 350 and RX 350h use 235/55R19 (29.18″ diameter) as standard. The RX 500h F-Sport Performance uses a wider 255/45R20 (29.04″ diameter). A popular upgrade for the RX 350 is 255/50R20 on a 20×9 ET45 wheel — this adds 10mm width, increases diameter by only 1.9%, and fits without rubbing.

Can I put Lexus IS wheels on a Lexus ES or NX?

The IS, ES, NX, and RX all share 5×114.3 bolt pattern and 60.1mm centre bore, so wheels will physically mount. However, you must verify: (1) the wheel diameter fits — IS 18″ wheels on an NX 350h (stock 19″) would reduce overall diameter, changing speedometer readings and AWD calibration; (2) the offset is appropriate — most Lexus models run ET40–ET50, and too low an offset can cause rubbing or handling issues.

How do I check if a tire upgrade is safe for AWD Lexus?

Use the Compare tab in the calculator above. Enter your stock size in the "Stock (A)" field and the proposed upgrade in "New (B)", then click Compare. The result shows the exact diameter difference as a percentage. For standard AWD (IS 300 AWD, RX 350): keep within ±3%. For hybrid PHEV models (NX 450h+, RX 450h+): stay within ±1% to avoid fault codes.

What is the Lexus GX 460 tire size?

The Lexus GX 460 used 265/65R17 on 17-inch wheels, giving an overall diameter of 30.56 inches. The newer GX 550 (2024+) uses 265/65R18 (31.61″). The GX uses a 6×139.7 bolt pattern — the same as the Toyota Land Cruiser, 4Runner, and Tacoma — so aftermarket wheel choices are wide. Popular upgrades include 285/65R17 or 285/60R18 for a modest diameter increase with improved off-road capability.

Lexus Tire Size Calculator

IS, ES, NX, RX, GX, LX — look up OEM sizes, check staggered fitment, and confirm your AWD system stays within its safe range.

Quick Answer

Lexus IS 350 F-Sport runs staggered 245/40R18 (front) + 275/35R18 (rear) — both equal 25.72″ diameter (AWD-matched). ES 300h stock: 235/45R18 = 26.33″. NX 350h stock: 235/55R18 = 28.18″. RX 350 stock: 235/55R19 = 29.18″. IS/ES/NX/RX all share 5×114.3 bolt pattern; GX/LX use 6×139.7.

Model / Trim	OEM Size	Diameter	Bolt / Offset
IS 350 F-Sport (front)	245/40R18	25.72″	5×114.3 / +35mm
IS 350 F-Sport (rear)	275/35R18	25.58″	5×114.3 / +35mm
ES 300h / ES 350	235/45R18	26.33″	5×114.3 / +45mm
NX 350h / NX 250	235/55R18	28.18″	5×114.3 / +45mm
RX 350 / RX 350h	235/55R19	29.18″	5×114.3 / +45mm
GX 550 Base	265/65R17	30.56″	6×139.7 / +20mm

PHEV variants (NX 450h+, RX 450h+): stay within ±1% OD. Replace all four tires simultaneously.

IS · ES · NX · RX

InchesMetric

Decode a Metric Tire Size

Lexus common sizes — quick load:

Tire Size (e.g. 205/45R17)

OEM Stock Tire Sizes — All Lexus Models

Lexus IS

2014–present (3rd gen)

Bolt: 5×114.3

Lexus ES

2019–present (7th gen)

Bolt: 5×114.3

Lexus NX

2022–present (2nd gen)

Bolt: 5×114.3

Lexus RX

2023–present (5th gen)

Bolt: 5×114.3

How to Use This Calculator

1Select your Lexus model. Choose your model (IS, ES, NX, RX, GX, LX) from the OEM Lookup tab. All trims and stock tire sizes populate automatically.
2Pick your trim package. Select your trim (Base, F-Sport, Luxury, F-Sport Performance) — the calculator loads the exact OEM size including any factory staggered setup.
3Enter the replacement size. Type the new tire size you are considering in the format 245/40R19. The calculator compares diameter, speedometer error, and AWD verdict.
4Check the stagger guide. If you have a staggered IS 350 or RX 500h, the Stagger tab shows front and rear separately with the diameter gap between them.
5Read your AWD verdict. Standard AWD Lexus: stay within ±3%. PHEV hybrid AWD (NX 450h+, RX 450h+): stay within ±1%. The badge turns green when your proposed size is safe.

Lexus Tire Sizing — Model Guide

IS 350 staggered vs square — the rotation tradeoff. Factory staggered (245/40R18 F + 275/35R18 R) gives sharper rear traction but prevents front-to-rear rotation. Going square on 245/40R18 all-round restores rotation capability and extends tire life by 20–30% with regular rotations.

PHEV hybrid AWD tolerance is tighter at ±1%. The NX 450h+ and RX 450h+ use electric motors at the rear axle with software torque management. Even within the 1% window, Lexus recommends replacing all four tires simultaneously to avoid PHEV system fault codes.

GX and LX use a different bolt pattern. The GX 460/550 and LX 570/600 use 6×139.7 — the same as the Toyota 4Runner, Tacoma, and Land Cruiser. Wheels from IS/ES/NX/RX (5×114.3) will not fit without adapters.

Winter set downsizing is standard practice. Most Lexus IS owners downsize from 18″ to 17″ (225/45R17) for winter. The larger sidewall improves cold-weather compliance and reduces wheel damage risk. The smaller overall diameter on winter tires is fine for seasonal use — all four tires must match.

Frequently Asked Questions

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