By the Rims & Tires Team
Compiled & reviewed by our West Georgia tire & wheel research team · Updated 2026-07-17
The 2024 Lexus GX 550 is a complete redesign — the GX moved from the PNGF body-on-frame platform to Toyota's new TNGA-F body-on-frame architecture shared with the 4Runner and Land Cruiser. It is significantly more capable than the outgoing GX 460, offers an Overtrail trim for serious off-road use, and has substantially different tire fitments from its predecessor.
2024+ GX 550 Tire Sizes by Trim
GX 550 Premium and Premium+: 265/55R20 all-season on standard 20-inch wheels. GX 550 Luxury and Luxury+: 265/50R22 on 22-inch wheels — a lower-profile, more road-biased setup.
The GX 550 lineup does not include a Sport or F Sport trim — trims run Premium, Premium+, Luxury, Luxury+, Overtrail, and Overtrail+.
GX 550 Overtrail and Overtrail+: 265/70R18 factory 33-inch all-terrain tires on 18-inch wheels. The Overtrail is the purpose-built off-road trim with skid plates, electronic locking rear differential, and kinetic dynamic suspension — these add off-road capability that all-terrain tires complement.
Best All-Terrain Tires for the GX 550
For the Overtrail's factory 265/70R18 fitment: the BF Goodrich KO2 in 265/70R18 is the natural upgrade over the OEM all-terrain. The KO2 has proven performance in Georgia's red clay, sand, and gravel terrain common on unpaved roads in Carroll and Heard counties.
The Falken Wildpeak AT3W in 265/70R18 is the best value all-terrain pick — comparable off-road capability to the KO2 at lower cost, with 3PMSF winter certification.
The Cooper Discoverer AT3 XLT in Load Range E: for GX 550 owners who tow regularly or load the vehicle heavily. The stiffer LRE construction handles the GX 550's substantial tow rating better under sustained towing conditions.
For the Luxury trim's low-profile 265/50R22 fitment: true all-terrain options are essentially unavailable at this 22-inch size, which is built for on-road refinement, not off-road use. Owners wanting all-terrain capability should look at the Overtrail's 18-inch wheel/tire package instead.
Frequently asked
What size tires does the 2024 Lexus GX 550 use?
GX 550 Premium/Premium+: 265/55R20. GX 550 Luxury/Luxury+: 265/50R22. GX 550 Overtrail/Overtrail+: 265/70R18 (33-inch all-terrain). Verify with your door jamb sticker.
What are the best tires for the Lexus GX 550 Overtrail?
The Overtrail ships with capable OEM all-terrain tires. For an upgrade: BF Goodrich KO2 in 265/70R18 is the most popular trail-rated upgrade. Falken Wildpeak AT3W is the value alternative. Cooper Discoverer AT3 XLT in LRE for heavy towing.
Are GX 550 tires different from GX 460 tires?
Yes. The outgoing GX 460 used 265/60R18 on its standard 18-inch wheels (17-inch fitments like 265/65R17 belong to the older GX 470). The 2024+ GX 550 uses 265/55R20 (Premium) or 265/50R22 (Luxury) on-road, and 265/70R18 on the off-road Overtrail. The platforms are different — GX 460 on PNGF, GX 550 on TNGA-F. Do not assume GX 460 tire recommendations apply to the GX 550.
Can you put 33-inch tires on a Lexus GX 550?
The Overtrail already comes factory-equipped with 33-inch tires (265/70R18). On Premium (265/55R20, about 31.5 inches) or Luxury (265/50R22, about 32.4 inches), stepping up to a true 33-inch tire would require a minor suspension lift for adequate clearance. A 1-inch lift or a spacer lift is often sufficient. Verify with a GX 550 specific fitment guide before purchasing.
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Last updated 2026-07-17. General guidance only — confirm specifics with a local shop for your exact vehicle.