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Home » Technical & Info » Jeep JK Wrangler Review – Part 4

Jeep JK Wrangler Review – Part 4

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
Layout
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

Back to Part 1

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