Jeep Grand Cherokee
WJ, 1999–2004
Factory gearing, tires, angles and brakes for the Grand Cherokee, 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
Laredo 4.0 I6, 3.55s, from P225/75R16| Tire | Height | Under the diffs | Speedo at 65 | RPM at 65 | Gears for daily | Open |
|---|---|---|---|---|---|---|
| 265/75R16 | 31.6 in | +1.2 in | 60 mph | 1,740 | 3.9 | Open → |
| 285/75R16 | 32.8 in | +1.8 in | 58 mph | 1,677 | 3.9 | Open → |
| 33x10.50R16 | 33.0 in | +1.9 in | 58 mph | 1,669 | 4.11 | Open → |
| 255/85R16 | 33.1 in | +1.9 in | 58 mph | 1,665 | 4.11 | Open → |
| 315/75R16 | 34.6 in | +2.7 in | 55 mph | 1,592 | 4.56 | Open → |
| 35x12.50R16 | 35.0 in | +2.9 in | 54 mph | 1,573 | 4.56 | Open → |
Stock turns 1,880 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 |
|---|---|---|---|---|---|---|
| Laredo 4.0 I6 | P225/75R16 | 42RE 4-speed automatic | 3.55 / 3.73 | 37.3 · 22.2 · 28.3 | 8.3 in | Use → |
| Laredo with 245/70R16 all-terrain option | P245/70R16 | 42RE 4-speed automatic | 3.55 / 3.73 | 37.3 · 22.2 · 28.3 | 8.3 in | Use → |
| Limited 4.0 I6 / 4.7 V8 | P235/65R17 | 42RE 4-speed automatic, 45RFE 4-speed automatic, 545RFE 5-speed automatic | 3.55 / 3.73 | 37.3 · 22.2 · 28.3 | 8.3 in | Use → |
| Overland 4.7 HO V8 Quadra-Drive (2002-04) | P235/65R17 | 545RFE 5-speed automatic | 3.73 | 37.3 · 22.2 · 28.3 | 8.3 in | Use → |
Size
- Wheelbase
- 105.9 in
- Front overhang
- 32.1 in
- Rear overhang
- 43.5 in
- Height
- 69 in
- Body
- SUV
- Stock tires
- P225/75R16, P235/65R17, P245/70R16
Transmissions and low range
- 42RE 4-speed automatic (4.0)
- 2.74 · 1.54 · 1 · 0.71
- 45RFE 4-speed automatic (4.7, 1999-2000)
- 3 · 1.67 · 1 · 0.75
- 545RFE 5-speed automatic (4.7, 2001-04)
- 3 · 1.67 · 1 · 0.75 · 0.67
- Low range, nv242 selec-trac
- 2.72:1
- Low range, nv247 quadra-trac ii
- 2.72:1
- Low range, nv247 quadra-drive
- 2.72:1
Axles
- Front
- Dana 30 (Vari-Lok with Quadra-Drive)
- Rear
- Chrysler 8.25 or Dana 44 (Dana 44 Vari-Lok with Quadra-Drive)
- 3.55 ratio
- Laredo 4.0 I6, Laredo with 245/70R16 all-terrain option, Limited 4.0 I6 / 4.7 V8
- 3.73 ratio
- Laredo 4.0 I6, Laredo with 245/70R16 all-terrain option, Limited 4.0 I6 / 4.7 V8, Overland 4.7 HO V8 Quadra-Drive (2002-04)
- Ratios made for it
- 3.07 · 3.55 · 3.73 · 3.9 · 4.11 · 4.56 · 4.88 · 5.13
Brakes
- Front rotor
- 12.01 in, 305 mm
- Front caliper piston
- 47.9 mm
- Rear rotor
- 12.00 in, 305 mm
- Rear
- disc (solid, 305 x 10 mm)
Suspension
- Front
- 4-link with track bar, coil springs
- Rear
- 3-link: two lower arms plus one upper A-arm with ball joint at the diff, no track bar; coil springs
- Rear layout
- Factory 3-link
Fuel economy
- EPA highway
- 19 mpg
- Rated years
- 1999–2004, 4WD
Aftermarket bumpers
5 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 Grand Cherokee sees how it does on their tires and lift.
Front 3
- Affordable Offroad Modular Winch Front Bumper – Jeep Grand Cherokee WJ (99-04)102 lb · $695 · winch ready
- ARB Combination Bull Bar Bumper 3450130B (WJ/WK)$2,196 · winch ready
- Trail Forged WJ Modular Full Width Winch Bumper (DIY)$615 · winch ready
Every calculator, set up for the Grand Cherokee
Source: rockcrawler.com.
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.