Lexus GX 550
2024+
Factory gearing, tires, angles and brakes for the GX 550, and what the usual upgrades do to it. Every number is from the maker's own figures unless the calculators say otherwise. A few figures here are still waiting on a factory document; the calculators mark them.
Tire upgrades, worked out
Premium / Premium+ (20 in), 3.307s, from 265/55R20| Tire | Height | Under the diffs | Speedo at 65 | RPM at 65 | Gears for daily | Open |
|---|---|---|---|---|---|---|
| 33x12.50R20 | 33.0 in | +0.8 in | 62 mph | 1,342 | Keep 3.307s | Open → |
| 275/65R20 | 34.1 in | +1.3 in | 60 mph | 1,300 | 3.55 | Open → |
| 35x11.50R20 | 35.0 in | +1.8 in | 58 mph | 1,265 | 3.73 | Open → |
| 35x12.50R20 | 35.0 in | +1.8 in | 58 mph | 1,265 | 3.73 | Open → |
| 37x13.50R20 | 37.0 in | +2.8 in | 55 mph | 1,197 | 3.91 | Open → |
Stock turns 1,407 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.
Trims
4 we have figures for| Trim | Tire | Transmission | Axle | Angles | Clearance | Open |
|---|---|---|---|---|---|---|
| Premium / Premium+ (20 in) | 265/55R20 | 10-speed automatic | 3.307 | 26 · 23 · 23 | 8.7 in | Use → |
| Luxury / Luxury+ (22 in) | 265/50R22 | 10-speed automatic | 3.307 | 26 · 23 · 21 | 8.7 in | Use → |
| Overtrail / Overtrail+ (2024) | 265/70R18 | 10-speed automatic | 3.307 | 26 · 24 · 22 | 8.9 in | Use → |
| Overtrail / Overtrail+ with 1 in lift (2025+) | 265/70R18 | 10-speed automatic | 3.307 | 28 · 26 · 24 | 9.8 in | Use → |
Size
- Wheelbase
- 112.2 in
- Front overhang
- 37.8 in
- Rear overhang
- 47.05 in
- Height
- 74 in
- Body
- SUV
- Stock tires
- 265/50R22, 265/55R20, 265/70R18
Transmissions and low range
- 10-speed automatic (3.4L twin-turbo V6, Tundra/Sequoia/GX family)
- 4.923 · 3.257 · 2.349 · 1.944 · 1.532 · 1.193 · 1 · 0.801 · 0.661 · 0.613
Axles
- Front
- Toyota IFS front differential
- Rear
- Toyota solid rear axle, four-link coil; electronic locker on Overtrail
- 3.307 ratio
- All trims
Brakes
- Front rotor
- 13.94 in, 354 mm
- Rear rotor
- 13.19 in, 335 mm
- Rear
- disc (ventilated, 20 mm)
Suspension
- Front
- double wishbone IFS, coilovers
- Rear
- 4-link with lateral rod, coil springs
- Rear layout
- Factory 4-link
Fuel economy
- EPA highway
- 21 mpg
- Rated years
- 2024–2026, 4WD
Aftermarket bumpers
6 listedMakers almost never publish angles, bottom heights or how far a bumper tucks, so these fill in as owners measure them. Measured yours? Add it on the rig page and every owner of this GX 550 sees how it does on their tires and lift.
Front 3
- CBI Off Road Lexus GX550 Front Bumper | 2024-Current$1,700 · winch ready
- Dissent Off-Road GX550 High Clearance Winch Bumper$1,979 · winch ready
- Expedition One GX 550 Front Bumper150 lb · winch ready
Every calculator, set up for the GX 550
Use at your own risk. These calculators are here to help you plan and to inform your decisions, not to sign off on a build. Many numbers are estimates worked out from factory figures, and some factory figures are not yet confirmed. Check every number against your own truck, its manuals and a qualified shop before you buy parts, cut, weld, lift, regear or drive on it. Long Range Desert Tools is not liable for anything you do based on these calculators or their results. The full terms are in our policies.