Jeep Wrangler
JK 2-door, 2007–18
Factory gearing, tires, angles and brakes for the Wrangler, 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.
Stock tire225/75R1629.3 in tall
Axle ratio3.21–4.1Factory, by trim
Crawl ratio73.1:1Best trim: Rubicon (2007-11, 3.8L)
Angles40.8 · 21.8 · 37.4°Approach, breakover, departure
Clearance10.2 in8.3 to 10.2 in by trim
Highway mpg21EPA
Tire upgrades, worked out
X / Sport (2007-11, 3.8L), 3.21s, from 225/75R16| 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 | 1,861 | 3.73 | Open → |
| 285/75R16 | 32.8 in | +1.8 in | 58 mph | 1,794 | 3.73 | Open → |
| 33x10.50R16 | 33.0 in | +1.9 in | 58 mph | 1,785 | 3.73 | Open → |
| 255/85R16 | 33.1 in | +1.9 in | 58 mph | 1,782 | 3.73 | Open → |
| 315/75R16 | 34.6 in | +2.7 in | 55 mph | 1,703 | 3.73 | Open → |
| 35x12.50R16 | 35.0 in | +2.9 in | 54 mph | 1,683 | 4.1 | Open → |
Stock turns 2,012 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.
Trims
7 we have figures for| Trim | Tire | Transmission | Axle | Angles | Clearance | Open |
|---|---|---|---|---|---|---|
| X / Sport (2007-11, 3.8L) | 225/75R16 | NSG370 6-speed manual, 42RLE 4-speed automatic | 3.21 / 4.1 | 40.8 · 21.8 · 37.4 | 8.8 in | Use → |
| Sahara (2007-11, 3.8L) | 255/75R17 | NSG370 6-speed manual, 42RLE 4-speed automatic | 3.21 / 4.1 | 43.8 · 24.9 · 40.3 | 10.1 in | Use → |
| Rubicon (2007-11, 3.8L) | LT255/75R17 | NSG370 6-speed manual, 42RLE 4-speed automatic | 4.1 | 44.3 · 25.4 · 40.4 | 10.2 in | Use → |
| Sport (2012-18, 3.6L) | 225/75R16 | NSG370 6-speed manual, W5A580 5-speed automatic | 3.21 / 3.73 | 38.7 · 21.5 · 29.1 | 8.3 in | Use → |
| Sport w/ optional 255/75R17 (2012-18) | 255/75R17 | NSG370 6-speed manual, W5A580 5-speed automatic | 3.21 / 3.73 | 41.5 · 24.8 · 31.6 | 9.6 in | Use → |
| Sahara (2012-18, 3.6L) | 255/70R18 | NSG370 6-speed manual, W5A580 5-speed automatic | 3.21 / 3.73 | 41.7 · 25.1 · 31.8 | 9.7 in | Use → |
| Rubicon (2012-18, 3.6L) | LT255/75R17 | NSG370 6-speed manual, W5A580 5-speed automatic | 3.73 / 4.1 | 42.2 · 25.8 · 32.3 | 10.0 in | Use → |
Size
- Wheelbase
- 95.4 in
- Front overhang
- 26.7 in
- Rear overhang
- 30.6 in
- Height
- 71 in
- Body
- Short wheelbase SUV
- Stock tires
- 225/75R16, 255/70R18, 255/75R17, LT255/75R17
Transmissions and low range
- NSG370 6-speed manual (2012-18 per 2017 sheet)
- 4.46 · 2.61 · 1.72 · 1.25 · 1 · 0.797
- NSG370 6-speed manual (2007-11, 3.8L)
- 4.46 · 2.61 · 1.72 · 1.25 · 1 · 0.84
- 42RLE 4-speed automatic (2007-11)
- 2.84 · 1.57 · 1 · 0.69
- W5A580 5-speed automatic (2012-18)
- 3.59 · 2.19 · 1.41 · 1 · 0.83
- Low range, command-trac (nv241)
- 2.72:1
- Low range, rock-trac (nv241or)
- 4:1
Axles
- Front
- Dana 30 (Sport/Sahara) / Dana 44 (Rubicon)
- Rear
- Dana 44 (all trims)
- 3.21 ratio
- X / Sport (2007-11, 3.8L), Sahara (2007-11, 3.8L), Sport (2012-18, 3.6L), Sport w/ optional 255/75R17 (2012-18), Sahara (2012-18, 3.6L)
- 3.73 ratio
- Sport (2012-18, 3.6L), Sport w/ optional 255/75R17 (2012-18), Sahara (2012-18, 3.6L), Rubicon (2012-18, 3.6L)
- 4.1 ratio
- X / Sport (2007-11, 3.8L), Sahara (2007-11, 3.8L), Rubicon (2007-11, 3.8L), Rubicon (2012-18, 3.6L)
- Ratios made for it
- 3.21 · 3.73 · 4.1 · 4.56 · 4.88 · 5.13 · 5.38
Brakes
- Front rotor
- 11.90 in, 302 mm
- Rear rotor
- 12.44 in, 316 mm
- Rear
- disc (solid, single-piston 48 mm)
Suspension
- Front
- 5-link (4 links plus track bar), coil springs
- Rear
- 5-link (4 links plus track bar), coil springs
- Rear layout
- Factory 4-link
Fuel economy
- EPA highway, automatic
- 21 mpg
- EPA highway, manual
- 21 mpg
- Rated years
- 2007–2018, 4WD
Brake upgrades
What bigger tires need →- Teraflex Delta front and rear big brake kit 4403450 (5x5)+21% brake torque11.9 → 14.0 in rotor · 4-piston · 17 in wheels or bigger · $2,809
- Dynatrac ProGrip brake system (JK)+16% brake torque11.9 → 13.5 in rotor · 17 in wheels or bigger · $1,364
- Teraflex front big brake kit 4303400 (13.3 in vented)+14% brake torque11.9 → 13.3 in rotor · 2-piston · 17 in wheels or bigger · $922
Aftermarket bumpers
26 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 Wrangler sees how it does on their tires and lift.
Front 15
- Addictive Desert Designs 2007-2018 Jeep Wrangler JK Stealth Fighter Front Bumper | Heritage$2,299 · winch ready
- ARB Stubby Bumper (Jeep JK)$995 · winch ready
- Body Armor 4x4 2007-2018 Jeep Wrangler JK Front Bumper Mid-stubby$633 · winch ready
- Chassis Unlimited 2007-2018 Jeep Wrangler JK Front Bumper$1,326 · winch ready
- DV8 Offroad 2007-2026 Jeep Wrangler JK/JL & Gladiator JT | FS-1 Series Stubby Front Bumper$800 · winch ready
- Fab Fours GR1000-1 Jeep Wrangler JK 2007-2018 Grumper Stubby Front Bumper$1,910
- Fishbone Offroad Manowar Front Winch Bumper for 2007-2018 Jeep Wrangler FB22045$588 · winch ready
- Iron Bull Bumpers 2007-2017 Jeep JK Wrangler Front Bumper$1,700 · winch ready
Show 7 more
- Ironman 4x4 Classic Off Road Bumper for Jeep Wrangler JK (2007-2017)$1,399 · winch ready
- Motobilt Crusher Front Bumper for Jeep JK / JKU70 lb · $749 · winch ready
- Next Venture Motorsports JK Aluminum Front Bumper - Featherweight Series$1,000 · winch ready
- Rusty's Off-Road Rusty's Bumper - Xtreme Trail Front Bumper w/ Winch Protection Bar - (JK)$863 · winch ready
- Savvy Off Road 2007-2018 Jeep JK/JKU Wrangler Front Bumper Without Hoop (ALUMINUM Krawler Lite) Savvy Offroad$859 · winch ready
- Throttle Down Kustoms Prospector Series Front Bumper (JK/JKU)$650 · winch ready
- Warn Elite Front Bumper for 2007-2018 Jeep Wrangler JK$1,650 · winch ready
Rear 11
- Addictive Desert Designs 2007-2018 Jeep Wrangler JK Stealth Fighter Rear Bumper | Heritage$1,999
- ARB Rear Bumper (Jeep JK)$1,145
- Body Armor 4x4 2007-2018 Jeep Wrangler JK Orion Rear Bumper$600
- DV8 Offroad 2007-2018 Jeep Wrangler JK | MTO Series Rear Bumper$800
- Fishbone Offroad Mako Rear Bumper for 2007-2018 Jeep Wrangler FB22278$600
- Iron Bull Bumpers 2007-2017 Jeep JK Wrangler Rear Bumper$2,400 · winch ready
- Motobilt Crusher Rear Bumper w/ Light Mounts for Jeep JK / JKU70 lb · $799
- Next Venture Motorsports JK Aluminum Rear Bumper - Featherweight Series$1,550
Every calculator, set up for the Wrangler
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 linksYour rigBuild sheet and measured angles.Start a build sheetLeaderboardsWhere the Wrangler ranks against every stock truck.See where it ranks
Source: media.stellantisnorthamerica.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.