Will 33s Fit a Lexus GX?

Yes on a GX 550, and usually only with trimming on a GX 460 or GX 470. A 2024-and-newer GX 550 Overtrail already rolls on a 32.6-inch tire, and a 275/70R18 goes on the factory wheels with no trimming. A 2010-2023 GX 460 starts at 30.5 inches, so a 33 takes liner work and an alignment, and a new one will not go back under the truck as your spare.

Most answers to this question stop at "it depends on the year" without saying what the year changes. Three things change: how tall the factory tire is, how far inboard the factory wheel sits, and whether a 33 still fits in the spare location. That last one catches GX 460 owners after the tires are mounted, because KDSS runs the rear sway bar through the same space. Here is the fit by generation, with the load numbers most guides skip.

Lexus GX 33-Inch Tire Chart by Generation

Find your truck and read across. Heights are calculated, and real tires run a few tenths over or under.

Your GX	Factory Tire and Wheel	Factory Height	33 That Fits	What Decides It
2024+ GX 550 Overtrail	265/70R18 on 18x7.5	32.6 in	275/70R18 (33.2 in), no trimming	Load. Nearly all are LT, so your pressure changes
2024+ GX 550 Premium	265/55R20 on 20x7.5	31.5 in	275/60R20 (33.0 in) on factory wheels	Rim approval. Passenger versions take a 7.5-inch rim, many LT versions want 8
2024+ GX 550 Luxury	265/50R22 on 22x7.5	32.4 in	275/50R22 (32.8 in) on factory wheels, or 285/50R22 (33.2 in) on 8.5-inch wheels	Rim width
2010-2023 GX 460	P265/60R18 on 18x7.5, or 265/55R19	30.5 in	285/70R17 (32.7 in) or 255/80R17 (33.1 in), with liner work and an alignment	The body mount first, then the spare
2003-2009 GX 470	265/65R17 on 17x7.5	30.6 in	255/80R17 (33.1 in) on factory offset, or 285/70R17 with trimming	Tire width and the upper control arm

By the 33 You're Shopping

Your wheel diameter narrows the list, and your generation decides how much width the truck will take.

33-Inch Size	Height x Width	What the Market Mostly Sells	GX Notes
285/70R17	32.7 x 11.2 in	Load Range E leads, with plenty of lighter 116-117 rated tires	The usual GX 460 33. Needs a 17-inch wheel, the smallest owners report clearing the brakes
255/80R17	33.1 x 10.0 in	Almost all LT Load Range E	Tall and narrow. The most room at the body mount on a GX 460 or GX 470
275/70R18	33.2 x 10.8 in	Nearly all LT Load Range E, with a few 116-rated standard-load tires	Bolts onto a GX 550 Overtrail. About the limit on GX 460 factory 18s
265/70R18	32.6 x 10.4 in	About half LT, half standard load	The Overtrail factory size. Tight at full lock on a GX 460
275/60R20	33.0 x 10.8 in	Mostly passenger, rated 114-116	The 33 for GX 550 20-inch wheels
285/50R22	33.2 x 11.2 in	All LT Load Range E	Approved rim range starts near 8.5 inches, an inch wider than factory 22s

Will 33s Fit a GX 460 Without a Lift?

Yes, if "without a lift" still allows trimming. A 33 is not a bolt-on here. Moving from the factory 30.5-inch tire to a 285/70R17 adds 2.2 inches of height and 0.8 inch of width. The top of the tire sits 1.1 inches closer to the fender at rest, and the back edge of the tire swings closer to the body mount behind the front wheel at full lock.

The clean no-trim ceiling sits around 31.6 inches. That is a 265/65R18 on the factory wheels or a 265/70R17 on 17s.

GX 460 owners often borrow 4Runner advice, and it does not carry over cleanly. Our guide to 33s on a stock 4Runner covers a truck that starts at 31.6 inches on most 5th-gen trims, a full inch taller than a GX 460.

What Rubs, and Where

• Fender liner: the back of the front wheel well at full lock. Usually the first contact.
• Body mount: the mount behind the front wheel. Worst at full lock in reverse.
• Upper control arm: a wide tire on a wheel with too much backspacing, usually at full lock.
• Running boards and bumper plastic: when the wheel sits too far out.

Owner reports at stock height split. One on 265/70R18s rubs at full lock on the driver's side where an aftermarket shock reservoir sits. One ran a 275/70R18 on factory offset with fender massaging and a forward alignment, and called it about the max for 18s. A 275/70R17 on a 17x8.5 at 0 offset cleared the body mount but needed liner work. Another says 33s articulate fully on a stock-height truck, and a fourth puts the practical limit at 32 inches because of KDSS.

A forward alignment is the cheapest clearance on this truck. It uses the adjusters on the lower control arms to add caster, which pushes the front tire forward in the wheel well and away from the body mount. Do that before you cut anything. Then pull the screw at the back of the wheel well, heat the liner, and push it away from the tire.

The Skinny 33: 255/80R17

At 10.0 inches wide, a 255/80R17 is narrower than the factory tire and 1.2 inches narrower than a 285/70R17, and it is taller than both. Width is what finds the body mount and the control arm, so this size gives you the height without the fight. GX owners on factory-offset 17s report no fitment issues with it. The same size on a 17x8.5 at -10 offset rubbed the bumper and liner off-road, which tells you offset matters as much as tire size.

A 33x12.50 is a different job. At 12.5 inches wide, it is 2.1 inches wider than factory. Expect liner cuts, bumper trimming, and a body mount chop.

Why a Lift Does Not Solve It

A lift raises the body. It does not move the body mount out of the tire's path at full lock, and a 2- to 3-inch lift reduces factory caster, which pulls the front tire back toward that mount. One lifted owner still rubbed on 32s until a new bumper, sliders, and a heat gun fixed it. A lift can help approach angle, but it is not the clearance fix.

Will a 33-Inch Spare Fit Under a GX 460?

Usually not, and this is the part nobody puts in front of you. The GX 460 carries a full-size spare under the rear of the truck, and KDSS is standard. KDSS links the sway bars through hydraulic cylinders so the truck stays flat on the road and frees them off-road. The rear bar has to swing when the axle articulates, and it swings in the same neighborhood as the spare. A taller tire takes that room away.

The factory hitch is the second limit. Here is what owners report trying:

• 33x10.5, no hitch, deflated and strapped up: nowhere near fitting.
• 285/70R17 with an aftermarket hitch: not close.
• 255/80R17 at 15 psi, aftermarket hitch and KDSS spacers: would not go in at any angle.
• A well-worn 285/70R17, 4Runner hitch and KDSS geometry parts: fit, fully inflated.
• 275/70 spare, no hitch, KDSS spacers, lifted truck: fit, with room for the sway bar to move.
• 275/70R17 on a stock-height truck: did not fit.
• 265/70R17 with the factory hitch: fit.

The working limit at stock height is about 31.6 to 32 inches. A new, full-tread 33 sits past it.

Your Spare Options With 33s

• Run a shorter spare. A 265/70R17 is 31.6 inches, 3.4 percent shorter than a 285/70R17. A 275/70R17 gets closer at 32.2 inches and 1.7 percent, but it may need KDSS spacers.
• Carry a full 33 somewhere else. A roof rack, a rear tire carrier, or the cargo area.
• Keep the factory spare. It works in an emergency, but it is 2.2 inches shorter than a 285/70R17, or 6.7 percent.

That last option matters because the GX 460 runs full-time 4WD through a Torsen center differential. A spare that much shorter keeps the center differential working on every mile. The same logic applies to driving an AWD car on a donut spare, so keep the speed down and the distance short.

Will 33s Fit a GX 550?

Yes, and it is the easiest GX to fit. Lexus sells the Overtrail with 33-inch all-terrain tires, though the math on a 265/70R18 says 32.6 and one owner measured closer to 32. The factory wheels sit far inboard, which leaves the tire room to grow.

Overtrail: 18-Inch Wheels

A 275/70R18 goes on the factory wheels with no trimming, per most owners and fitment guides. It adds 0.6 inch of height and 0.4 inch of width. There is headroom past that. Reports include a 285/70R17 on a 17x8 at +25 and a 285/70R18 on an 18x9 at +18, both with no rubbing. A 285/75R18 is reported clean on a stock 2025 Overtrail+, though others pulled crash brackets to fit that size.

Premium: 20-Inch Wheels

A 275/60R20 is the common choice at 33.0 inches, up 1.5 inches from the factory 31.5. Owners have gone further, with a 275/65R20 reported on factory 20s and stock suspension with no rub at full lock. The factory wheel is the limit, not the fender. Stock 20s are 7.5 inches wide, and owners report that passenger and XL 275s are approved for that width while many LT versions need 8 inches.

Luxury: 22-Inch Wheels

The factory 265/50R22 is 32.4 inches, so you are already close. A 275/50R22 gets you to 32.8 inches, and many are approved for a 7.5-inch rim. A 285/50R22 reaches 33.2 inches, and one owner reports zero rubbing on factory 22s. But tire makers generally list that size for 8.5- to 10-inch rims, and factory 22s are 7.5 inches wide. Put it on a wider wheel.

GX 460 Wheels Do Not Swap Straight Across

All three generations share 6x139.7, and that is where the match ends. A GX 550 uses a 95.1 mm hub bore and M14x1.5 lugs. A GX 460 uses 106.1 mm and M12x1.5. A factory GX 550 wheel will not slide over a GX 460 hub at all. A GX 460 wheel clears a GX 550 hub, but it needs a hub-centric ring and the right lug nuts, and it sits about an inch farther out than the factory wheel.

The Spare Still Has a Limit

The GX 550 spare well is far friendlier than the GX 460's. Owners report that a 275/70R18, 275/70R17, and 275/60R20 all fit. One owner's 33.7-inch tire filled the well with no room left, a 285/75R17 fits "barely," and a 285/75R18 will not go in unless deflated. The hitch and a frame cross-brace set the limit. Measure before you buy, because one owner's 275/70R18 spare measured about 33.7 inches against a calculated 33.2.

If the truck is still under warranty, hold on to the factory wheels and tires, and read whether bigger tires void a truck warranty before you change anything.

Will 33s Fit a GX 470?

Usually with trimming. The factory 265/65R17 is 30.6 inches, nearly the same starting point as a GX 460, and the largest common size that goes on untouched is a 265/70R17 at 31.6 inches.

You have two routes to 33. The narrow route is a 255/80R17 on the factory 17x7.5 wheels, which owners report running with no fitment issues. The wide route is a 285/70R17, and most owners say it needs modifications. One unlifted project truck on 17x8.5 wheels needed the liners out, a small fender trim, trimmed running boards, and a small notch at the frame. That took about 45 minutes, and the truck then cleared U-turns at full lock.

Width also brings the upper control arm into play. Owners running 285s on 17x7.5 wheels at +15 report rubbing there at full lock once lifted, and one suggests 4.5 inches of backspacing or less. The spare location tops out around 32 inches here too.

What Wheel Offset Do 33s Need on a GX?

The generation sets the answer, because the factory numbers are so far apart.

Generation	Factory Wheel	Factory Backspacing	Hub Bore and Lugs	Where 33s Work
GX 470	17x7.5, +25 to +30	5.2 to 5.4 in	106.1 mm, M12x1.5	Factory wheels with 255/80R17. About 4.5 in of backspacing with 285s
GX 460	18x7.5, +25	5.2 in	106.1 mm, M12x1.5	17x8.5 near 0 offset (4.75 in) with 285/70R17
GX 550	18x7.5, +50 reported	6.2 in	95.1 mm, M14x1.5	17x8 at +25 to +35, or 18x8.5 at +20

Backspacing sets how close the tire runs to the suspension. Too much, and a wide tire finds the control arm and frame at full lock. Too little, and the tire swings out and catches the back of the wheel well and the bumper. Our guide to wheel offset and tire width package fitment walks through that tradeoff. On the GX 550, dealer reports say +50 and some databases say +60, so confirm yours.

The wheel market leans the wrong way for a GX 550. About two-thirds of 17-inch 6x139.7 wheels run 0 or negative offset, which suits a GX 460 and pushes a GX 550 tire well past factory. Fewer than 1 in 10 reach +25. On hub bore, more than 9 in 10 17- and 18-inch 6x139.7 wheels bore 106 mm or larger. That clears a GX 460 directly and needs a hub ring on a GX 550.

Stay at 17 inches or larger. Owners report 16s will not clear GX 460 brakes, and fitment guides report 17s clear the GX 550 calipers.

What Tire Pressure Do 33s Need on a GX?

Your door placard, required under FMVSS 110, is written for the factory tire. It reads 32 psi on a GX 460, 33 psi on GX 550 20s and 22s, and 35 psi on an Overtrail. Change to an LT tire and that number stops applying, because an LT tire carries less at the same pressure.

The Tire and Rim Association load tables give you the real number. Take the factory tire's rating, divide by 1.10 for a passenger tire on a truck, and find the pressure where the LT tire carries that load.

Truck	Factory Rating	Target Load	LT 33	Pressure
GX 460	109: 2,271 lb	2,065 lb	LT285/70R17	About 35 psi
GX 470	110: 2,337 lb	2,125 lb	LT285/70R17	About 36 psi
GX 550 Overtrail	116: 2,756 lb	2,505 lb	LT275/70R18	About 46 psi

Treat those as floors. On a GX 460, 40 psi gets you the factory tire's full rating back, since an LT285/70R17 carries 2,315 pounds there. At the 32 psi placard it carries less than 2,105 pounds.

Load Range E Buys You Nothing at These Pressures

From 35 to 50 psi, an LT285/70R17 follows one load curve no matter how it is marked: 2,105 pounds at 35 psi, 2,315 at 40, 2,510 at 45, and 2,755 at 50. Load Range E only pulls ahead above 50 psi. A GX 460 has a 6,600-pound GVWR and an Overtrail has 7,165, so a stiffer casing mostly buys a firmer ride unless you load for overland trips. Our comparison of P-metric vs LT tires covers the rest of that decision.

The 116-Rated 33 for an Overtrail

Nearly every 275/70R18 on the market is LT Load Range E, and only about 1 in 20 is a 116-rated standard-load tire. The General Grabber A/TX and Toyo Open Country A/T III EV are two examples. A 116 matches the factory rating at the 35 psi placard, with no pressure change. The tradeoff is speed rating. The factory tire is H-rated, and these all-terrains run S or T.

On GX 550 20s, most 275/60R20s are passenger tires rated 114-116, which clears the factory 113. Placard pressure holds there.

Do 33s Throw Off a GX Speedometer?

Yes, and how much depends on where you started. On a GX 460, a 285/70R17 is 7.2 percent taller than factory, so an indicated 60 mph is a true 64.3. On a GX 550 Overtrail, a 275/70R18 reads 60 at a true 61.0, and a Premium on 275/60R20s reads 60 at a true 62.9. See how bigger tires affect your speedometer for the fix. Your odometer under-counts by the same percentage.

What the Wrong 33 Costs You While You Drive on It

A 33 that almost fits costs you in steps, and each step is more expensive than the last.

The Clearance Ladder

1. Liner contact. A scrub at full lock in parking lots. Cheap to fix and easy to ignore.
2. Shoulder and sidewall scuffing. Repeated contact with a mount or trim edge wears into rubber that cannot be repaired. Read how to judge tire sidewall damage before you drive on it.
3. Control arm or frame contact. The tire now touches steel under load.
4. New tires, then new wheels. One cut tire on a full-time 4WD truck means matching the other three, and the wheel that caused it still has to change.

The Load Ladder

1. LT tire at placard pressure. On a GX 550 Overtrail, an LT275/70R18 at 35 psi carries about 2,070 pounds against a factory rating of 2,756.
2. More flex, more heat. An underinflated tire flexes more with every revolution.
3. Shoulder wear. The tread edges carry the load and wear first.
4. Heat damage. A long tow at highway speed is where a marginal tire lets go, and replacement stops being optional.

The Tire Industry Association's guidance matches the math: a replacement tire should carry at least what the original carried.

How to Put 33s on a GX

1. Read the placard and the sidewall. Write down your factory size, load index, and pressure.
2. Pick your 33 from the chart. Wheel diameter first, then generation.
3. Decide on the spare first. On a GX 460 or GX 470, choose a shorter spare or a new home for a full 33.
4. Confirm the rim range. The tire's approved width has to include your wheel, especially on GX 550 factory 7.5s.
5. Confirm the wheel. Check hub bore, lug thread, offset, and load rating against your generation.
6. Test one corner. Mount one tire up front and run full lock both ways, forward and in reverse. On a GX 460 Luxury with height control, test at the lowest setting too.
7. Trim in order. Forward alignment, then liner, then running boards. A body mount chop comes last.
8. Set pressure from the load table. Use the placard only if the new tire's rating matches the factory tire.

Conclusion

A 33 is close to stock on a GX 550 and a real project on a GX 460 or GX 470. On the newest truck, the job is matching load and rim width. On the older two, it is width, offset, and a plan for the spare. Start with your year and trim in our Lexus GX tire and wheel finder.

Key Takeaways

• A GX 550 Overtrail takes a 275/70R18 on factory wheels with no trimming.
• A GX 460 starts at 30.5 inches, and its no-trim ceiling is about 31.6 inches.
• A 255/80R17 is the narrowest true 33 for a GX 460 or GX 470.
• A new 33 usually will not fit in the GX 460 spare location. Plan on a spare of about 32 inches or less.
• An LT275/70R18 on an Overtrail needs about 46 psi, not the 35 psi placard.

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