Isuzu D-Max
3rd gen, 2020–
Factory gearing, tires, angles and brakes for the D-Max, and what the usual upgrades do to it. Every number is from the maker's own figures unless the calculators say otherwise.
Stock tire275/65R1731.1 in tall
Axle ratio4Factory
Crawl ratio48.7:1Best trim: 2026 SX Crew Cab cab chassis, 2.2 RZ4F-TC, 8AT
Angles29.2 · 25.2 · 19.2°Approach, breakover, departure
Clearance9.6 in9.3 to 9.6 in by trim
Tire upgrades, worked out
2026 BLADE Crew Cab pick-up, 3.0 4JJ3-TCX, 6AT, 4s, from 275/65R17| Tire | Height | Under the diffs | Speedo at 65 | RPM at 65 | Gears for daily | In Tire size |
|---|---|---|---|---|---|---|
| 265/70R17 | 31.6 in | +0.3 in | 64 mph | 1,604 | Keep 4s | In Tire size → |
| 285/70R17 | 32.7 in | +0.8 in | 62 mph | 1,550 | 3.727 | In Tire size → |
| 33x10.50R17 | 33.0 in | +1.0 in | 61 mph | 1,536 | 3.727 | In Tire size → |
| 33x12.50R17 | 33.0 in | +1.0 in | 61 mph | 1,536 | 3.727 | In Tire size → |
| 255/80R17 | 33.1 in | +1.0 in | 61 mph | 1,533 | 3.727 | In Tire size → |
| 285/75R17 | 33.8 in | +1.4 in | 60 mph | 1,498 | 3.727 | In Tire size → |
| 315/70R17 | 34.4 in | +1.6 in | 59 mph | 1,475 | 3.727 | In Tire size → |
| 35x11.50R17 | 35.0 in | +2.0 in | 58 mph | 1,448 | 3.727 | In Tire size → |
| 35x12.50R17 | 35.0 in | +2.0 in | 58 mph | 1,448 | 3.727 | In Tire size → |
| 37x11.50R17 | 37.0 in | +3.0 in | 55 mph | 1,370 | 3.727 | In Tire size → |
| 37x12.50R17 | 37.0 in | +3.0 in | 55 mph | 1,370 | 3.727 | In Tire size → |
Stock turns 1,631 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.
Trims
12 we have figures for| Trim | Tire | Transmission | Axle | Angles | Clearance | Use in the calculators |
|---|---|---|---|---|---|---|
| 2026 BLADE Crew Cab pick-up, 3.0 4JJ3-TCX, 6AT | 275/65R17 | 6-speed automatic | 4 | 29.2 · 25.2 · 19.2 | 9.6 in | Use → |
| 2026 LS-U Crew Cab pick-up, 3.0 4JJ3-TCX, 6AT | 265/60R18 | 6-speed automatic | 4 | 30.5 · 23.8 · 19 | 9.4 in | Use → |
| 2026 LS-U+ Crew Cab pick-up, 3.0 4JJ3-TCX, 6AT | 265/60R18 | 6-speed automatic | 4 | 30.5 · 23.8 · 19 | 9.4 in | Use → |
| 2026 SX Crew Cab pick-up, 2.2 RZ4F-TC, 8AT | 255/65R17 | 8-speed automatic | — | 30 · 23.3 · 23.9 | 9.3 in | Use → |
| 2026 SX Crew Cab pick-up, 3.0 4JJ3-TCX, 6AT | 255/65R17 | 6-speed automatic | 4 | 30 · 23.3 · 23.9 | 9.3 in | Use → |
| 2026 X-RIDER Crew Cab pick-up, 2.2 RZ4F-TC, 8AT | 255/65R17 | 8-speed automatic | — | 26.9 · 23.3 · 23.9 | 9.3 in | Use → |
| 2026 X-TERRAIN Crew Cab pick-up, 3.0 4JJ3-TCX, 6AT | 265/60R18 | 6-speed automatic | 4 | 27.3 · 23.8 · 19 | 9.4 in | Use → |
| 2026 LS-U Crew Cab cab chassis, 3.0 4JJ3-TCX, 6AT | 265/60R18 | 6-speed automatic | 4 | 30 · 24.3 · — | 9.4 in | Use → |
| 2026 SX Crew Cab cab chassis, 2.2 RZ4F-TC, 8AT | 255/65R17 | 8-speed automatic | 4 | 29.6 · 23.9 · — | 9.3 in | Use → |
| 2026 SX Crew Cab cab chassis, 3.0 4JJ3-TCX, 6AT | 255/65R17 | 6-speed automatic | 4 | 29.6 · 23.9 · — | 9.3 in | Use → |
| 2026 SX Space Cab cab chassis, 3.0 4JJ3-TCX, 6AT | 255/65R17 | 6-speed automatic | 4 | 29.6 · 23.9 · — | 9.3 in | Use → |
| 2026 SX Single Cab cab chassis, 3.0 4JJ3-TCX, 6AT | 255/65R17 | 6-speed automatic | 4 | 29.6 · 23.9 · — | 9.3 in | Use → |
Size
- Wheelbase
- 123 in
- Front overhang
- 35.6 in to 36.6 in
- Rear overhang
- 49.2 in to 49.4 in
- Height
- 70.3 in
- Body
- Pickup
- Stock tires
- 255/65R17, 265/60R18, 275/65R17
Transmissions and low range
- 6-speed automatic (AWR6B45 II)
- 3.6 · 2.09 · 1.488 · 1 · 0.687 · 0.58
- 8-speed automatic (L-B500)
- 4.903 · 3.12 · 2.166 · 1.597 · 1.312 · 1 · 0.776 · 0.651
- Low range, part-time
- 2.482:1
Axles
- 4 ratio
- All trims
- Ratios made for it
- 3.727
Brakes
- Front rotor
- 12.60 in, 320 mm
- Rear
- drum
Suspension
- Front
- Independent high-ride upper/lower wishbone, coil springs, gas shocks
- Rear
- Alloy-steel overslung long-span semi-elliptic leaf springs
- Rear layout
- Leaf springs
- Rear shock, factory-length replacement
- 13.58 to 22.05 in eye to eye, 8.47 in of stroke (Dobinsons GS43-801)
- Work out yours
- Wheel travel and flex with your parts
Roof and stability
- Roof load limit
- No roof figure in the Australian ratings research.
- Also
- 220 lb
- Roof
- Pickup, cab and bed
- Width
- 73.6 in
- Track
- 61.8 in front, 61.8 in rear
- GVWR (GVM)
- 6,834 lb (3,100 kg as printed)
- GAWR (axle load)
- 3,197 lb front (1,450 kg as printed), 4,211 lb rear (1,910 kg as printed)
- Bed
- 61.8 in long · 44.2 in wide
- Rack and tent
- Roof rack and tent calculator
Aftermarket bumpers
7 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 with the Clearance calculator and every owner of this D-Max sees how it does on their tires and lift.
Front 5
- Hamer 4x4 CONFIGURATION ISUZU D-MAX 2020-2023 (AM107-PT-D20-1)165 lb (75 kg as printed) · winch ready
- Offroad Animal Predator Bull Bar, Isuzu Dmax 2021 to 2023 (FB-IDM-RG-21-PR-ASM0)117 lb (53 kg as printed) · winch ready
- Offroad Animal Predator Bull Bar, Isuzu Dmax 2024 Facelift (FB-IDM-RG-24-PR-ASM0)132 lb (60 kg as printed) · winch ready
- Offroad Animal Toro Bull Bar, Isuzu Dmax 2021 to 2023 (FB-IDM-RG-21-TOR-ASM0)132 lb (60 kg as printed) · winch ready
- Offroad Animal Toro Bull Bar, Isuzu Dmax 2024 Facelift (FB-IDM-RG-24-TOR-ASM0)154 lb (70 kg as printed) · winch ready
Rear 2
- Offroad Animal Rear bumper and tow bar, Isuzu Dmax MY21 2021 to 2023 (RB-IDM-RG-21-ASM0)110 lb (50 kg as printed)
- Offroad Animal Rear Protection Bumper to suit Isuzu Dmax 2021 to current (RBP-IDM-RG-21-ASM0)77 lb (35 kg as printed)
Every calculator, set up for the D-Max
Tire sizeBigger tires: speedo, clearance, angles and brakes.Compare tiresRegearHighway RPM on every ratio and mpg.Pick your gearsCrawl ratioHow slow it creeps, against other trucks.Work out crawlSpeedometerWhat it really reads on new tires.Fix your speedoLinksAnti-squat and what a lift does to it.Check your linksClearanceReal angles from a tape, and the bumpers that fit.Measure your anglesBuild sheetEvery part and number on your truck, on one sheet.Start a build sheetLeaderboardsWhere the D-Max ranks against every stock truck.See where it ranks
Source: isuzuute.com.au.
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.