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Jeep JK Wrangler Review – Part 4
Posted in Technical & Info
An in-depth look at the new JK Wrangler. Inside, outside, on the trail, and on the road.
We took the opportunity to visit some trails in the central PA mountains to do an in depth review of the new JK. We already did a trail debrief from the OK Auto Grand Reopening weekend but this would be a little different. We were going to dig into the nitty-gritty details of all aspects of the new JK. From street driving to trail driving to likes and dislikes, and even driver perspective and passenger perspective.
Specifications
| General Information | ||
| Vehicle Type | 4-Door Sport Utility | |
| Assembly Plant | Toledo, Ohio | |
| EPA Class | Multipurpose vehicle | |
| Engine: | ||
| 3.8-Liter, OHV, 12-Valve SMPI V6 | ||
| Availability | Standard | |
| Type & Description | Six-cylinder, 60° V-type, liquid-cooled | |
| Displacement | 230.5 cu. in. (3,778 cu. cm) | |
| Bore x Stroke | 3.78×3.43 (96×87) | |
| Valve System | OHV, 12 valves, roller followers, hydraulic lifters | |
| Fuel Injection | Sequential, multiport, electronic | |
| Construction | Cast-iron block, aluminum alloy heads | |
| Compression Ratio | 9.6:1 | |
| Power (SAE net) | 205 hp (153 kW) @ 5,200 rpm (53.9 hp/L) | |
| Torque (SAE net) | 240 lbs-ft @ 4,000 rpm | |
| Fuel Recommendation | Unleaded regular, 87 octane (R+M)/2 | |
| Oil Capacity | 6 qt. (5.7L) plus filter | |
| Coolant Capacity | 13.36 qt. (12.64L) Std. | |
| Emission Controls | Three-way catalytic converter, heated oxygen sensors, electronic EGR and internal engine features Meets Tier 2 Bin 5 (federal) and LEV 2 (CA) emission requirements | |
| Electrical System | ||
| Alternator | 160A | |
| Battery | 600 CCA, maintenance-free | |
| Transmission: | ||
| NSG 370—Manual, Six-Speed Overdrive | ||
| Availability | Standard—All models | |
| Description | Synchronized in all forward gears and reverse, multirail shift system with top-mounted shift lever | |
| Clutch | Hydraulic actuation | |
| Gear Ratios 1st | 4.46 | |
| Gear Ratios 2nd | 2.61 | |
| Gear Ratios 3rd | 1.72 | |
| Gear Ratios 4th | 1.25 | |
| Gear Ratios 5th | 1.00 | |
| Gear Ratios 6th | 0.84 | |
| Gear Ratios Reverse | 4.06 | |
| Axle Ratio | 3.21 Std., 4.10 Opt. (Std. on Rubicon) | |
| Overall Top Gear | 2.69 Std., 3.44 Opt. (Std. on Rubicon) | |
| Transmission: | ||
| 42RLE—Automatic, Four-Speed Overdrive | ||
| Availability | Optional | |
| Description | Electronic governor, electronically controlled converter clutch | |
| Gear Ratios 1st | 2.84 | |
| Gear Ratios 2nd | 1.57 | |
| Gear Ratios 3rd | 1.0 | |
| Gear Ratios 4th | 0.69 | |
| Gear Ratios Reverse | 2.21 | |
| Axle Ratio | 4.10 | |
| Overall Top Gear | 2.83 | |
| Transfer Case: | ||
| NV241 Command-Trac | ||
| Type | Part-time | |
| Operating Modes | 2WD High; 4WD High; Neutral; 4WD Low | |
| Low Range Ratio | 2.72:1 | |
| Center Differential Type | None | |
| Transfer Case: | ||
| NV241OR Rock-Trac | ||
| Type | Part-time, heavy-duty | |
| Operating Modes | 2WD High; 4WD High; Neutral; 4WD Low | |
| Low Range Ratio | 4.0:1 | |
| Center Differential Type | None | |
| Dimensions And Capacities | ||
| General Overall Length | 173.4 (4404.4) | |
| Overall Width (without mirrors) |
73.7 (1872.9) | |
| Overall Height, Hardtop | 70.9 (1,800.1) | |
| Wheelbase | 116.0 (2946.4) | |
| Track, Front | 61.9 (1,572.3) | |
| Track, Rear | 61.9 (1,572.3) | |
| Overhang, Front | 26.7 (679.2) | |
| Overhang, Rear | 30.6 (777.9) | |
| Maximum Payload (includes occupants & cargo) |
1,000 lbs. (373 kg) | |
| Curb Weight | ||
| Wrangler X, Man. Trans | 4075 lbs. (1848 kg) | |
| Wrangler X Auto. Trans | 4100 lbs. (1860 kg) | |
| Wrangler Sahara, Man. Trans | 4269 lbs. (1936 kg) | |
| Wrangler Sahara, Auto. Trans | 4294 lbs. (1948 kg) | |
| Wrangler Rubicon, Man. Trans | 4315 lbs. (1957 kg) | |
| Wrangler Rubicon, Auto. Trans | 4340 lbs. (1969 kg) | |
| Accommodations | ||
| Seating Capacity, F/R | 2/3 | |
| Front Headroom | 41.3 (1,048.4) | |
| Front Leg Room | 41.0 (1,040.3) | |
| Front Shoulder Room | 55.8 (1,416.7) | |
| Front Hip Room | 55.6 (1,412.8) | |
| Seat Travel | Driver–9.4 (239.5), passenger–9.4 (239.5) | |
| Front Volume Index cubic ft. (cu. meters) |
54.6 (1,545) | |
| Rear Headroom | 40.4 (1026.2 mm) | |
| Rear Leg Room | 37.2 ( 944.9 mm) | |
| Rear Shoulder Room | 56.8 (1442.7 mm) | |
| Rear Hip Room | 56.7 (1440.2 mm) | |
| Rear Seat Volume Index cu. ft. (cu. meters) |
49.4 (1.40 cu. m) | |
| Cargo Liftover Height | 31.4 ( 797.6 mm) | |
| Maximum Cargo Width at Swing Gate Opening | 58.7 (1,490.4) | |
| Minimum Cargo Width at Swing Gate Opening | 37.0 (939.2) | |
| Maximum Cargo Height at Swing Gate Opening | 37.1 (943.5) | |
| Minimum Cargo Height at Swing Gate Opening | 37.0 (939.2) | |
| Distance Between Wheelhouses | 44.7 (1,135.6) | |
| Cargo Volume cubic ft. (cu. meters) Rear Seat Installed |
56.5 cu. ft. (1.60) | |
| Rear seat folded | 86.75 (2.46 cu. m) | |
| Rear Seat Upright | 46.43 (1.31 cu. m) | |
| Body And Chassis | ||
|
Longitudinal front engine, four-wheel drive | |
| Construction | Ladder-type frame, open steel body | |
| Suspension | ||
| Front | Live axle, leading arms, track bar, coil springs, stabilizer bar, low-pressure (on 16-inch wheel packages) gas-charged shock absorbers—std.; Monotube high-pressure (on 17- and 18-inch wheel packages) gas-charged shock absorbers—std. Rubicon; Electronic Sway Bar Disconnect System (ASDS) opt. |
|
| Rear | Live axle, trailing arms, track bar, coil springs, stabilizer bar, low-pressure (on 16-inch wheel packages) gas-charged shock absorbers—std.; Monotube high-pressure (on 17- and 18-inch wheel packages) gas-charged shock absorbers—std. Rubicon |
|
| Steering | ||
| Type | Power, recirculating ball with damper | |
| Overall Ratio | 16.7:1 overall | |
| Turning Diameter (curb-to-curb) | 34.9 ft. (10.62 m.) | |
| Steering Turns (lock-to-lock) | 3.5 | |
| Brakes | ||
| Availability | Standard—All | |
| Power Assist Type | 10 (254) single-diaphragm vacuum | |
| Four-Wheel Anti-Lock with on- and off-road calibrations | Standard | |
| Electronic Stability Program (ESP) | Standard | |
| Parking Brake Type | Drum-in-hat | |
| Front Size and Type | 11.9×1.1 (302×28) vented rotor with 2.6 (66) single-piston floating caliper | |
| Swept Area (total front) | 190.8 sq. in. (1,230.97 sq. cm.) | |
| Rear Size and Type | 12.44×0.47 (316×12) solid rotor with 1.9 (48) single-piston floating caliper | |
| Swept Area (total rear) | 55.4 sq. in. (357.6 sq. cm.) | |
| Wheels | ||
| Availability | X Standard | |
| Type and Material | Painted Steel | |
| Size | 16×7.0 | |
| Availability | X Optional | |
| Type and Material | Painted Cast Aluminum | |
| Size | 16×7.0 | |
| Availability | Sahara Standard | |
| Type and Material | Painted Cast Aluminum | |
| Size | 17×7.5 | |
| Availability | Rubicon Standard | |
| Type and Material | Machined Cast Aluminum | |
| Size | 17×7.5 | |
| Availability | Sahara Optional | |
| Type and Material | Painted Cast Aluminum | |
| Size | 18×7.5 | |
| Tires | ||
| Availability | X Standard | |
| Size and Type | P225/75R16, On/Off-Road, Black Side Wall | |
| Mfr. and Model | Goodyear Wrangler ST | |
| Revs per Mile (km) | 712 (1,146) | |
| Availability | X Optional | |
| Size and Type | P245/75R16, On/Off-Road, Black Side Wall | |
| Mfr. and Model | Goodyear Wrangler SRA | |
| Revs per Mile (km) | 687 (1,106) | |
| Availability | Sahara Standard | |
| Size and Type | P255/75R17, On/Off-Road, Outlined White Lettered | |
| Mfr. and Model | Goodyear Wrangler SRA | |
| Revs per Mile (km) | 661 (1,064) | |
| Availability | Sahara Optional | |
| Size and Type | P255/70R18, On/Off-Road, Outlined White Lettered | |
| Mfr. and Model | Bridgestone Dueler 693 | |
| Revs per Mile (km) | 653 (1,051) | |
| Availability | Rubicon Standard | |
| Size and Type | LT255/75R17, Off-Road, Black Side Wall | |
| Mfr. and Model | BFGoodrich Mud Terrain | |
| Revs per Mile (km) | 650 (1,046) | |
Vehicle Clearances
| Clearances | P225/75R16 | P245/75R16 | P255/75R17 | P255/70R18 | LT255/75R17 |
|---|---|---|---|---|---|
| Approach Angle Degree |
40.8 | 42.0 | 43.8 | 44.6 | 44.3 |
| Breakover Angle Degree |
21.8 | 23.1 | 24.9 | 25.5 | 25.4 |
| Departure Angle Degree |
37.4 | 38.7 | 40.3 | 40.6 | 40.4 |
| Front Axle to Ground (inches) | 9.1 | 9.6 | 10.3 | 10.6 | 10.5 |
| Rear Axle to Ground (inches) | 8.8 | 9.4 | 10.1 | 10.3 | 10.2 |
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