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Lexus GX

GX470 and GX460: tire fitment, KDSS, rear air and lifts on the Prado-based Lexus.

Tire Fitment

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Tire Fitment

Biggest Tires on a Stock Lexus GX470 & GX460: Fitment Guide

On a stock GX470 (2003–2009) the factory tire is 265/65R17 (30.6″) and the practical max on stock wheels is 265/70R17 (31.6″), with some rubbing at full lock. On a stock GX460 (2010–2023) the factory tire is 265/60R18 (30.5″); 265/65R18 (31.6″) fits clean and owners run 265/70R18 (32.6″) on stock suspension and stock wheels. True 33s like 285/70R17 need a 2″–3″ lift, lower-offset wheels and usually a body mount chop. 35s need all of that plus aftermarket UCAs, trimming and a regear.

Lexus GX · Land Cruiser10 min

Mods & Builds

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Mods & Builds

Toyota Regear Chart: Tire Size vs Gear Ratio vs RPM

To get back the factory feel after bigger tires, multiply your stock axle ratio by (new tire height ÷ stock tire height). On a 5th gen 4Runner, FJ Cruiser or 2nd gen Tacoma (3.73 stock, 31.6″ tires) that math says about 4.0 for 33s and 4.1 for 35s. Most owners overshoot on purpose because armor, racks and water add weight: 4.56 is the common pick for 33s to 35s, 4.88 for heavy 35″ builds and 5.29 for 37s. 3rd gen Tacomas and GX460s start at 3.91 on shorter tires, so they land about one step higher: 4.56 for 35s, 4.88 for heavy 35s or 37s.

Tacoma · 4Runner8 min