Jeep Grand Cherokee
WK2 early, 2011–13

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.

Use this truck in the calculators

114.8 in wheelbase · 34.9 in front · 40.2 in rear overhang

Stock tireP245/70R1730.5 in tall

Axle ratio3.06–3.47Factory, by trim

Crawl ratio33.9:1Best trim: Limited 3.6 / 5.7, standard suspension

Angles26.3 · 18.8 · 26.5°Approach, breakover, departure

Clearance10.6 in8.6 to 10.6 in by trim

Highway mpg22EPA

Tire upgrades, worked out

Laredo 3.6 V6 Quadra-Trac II, 3.06s, from P245/70R17

Tire	Height	Under the diffs	Speedo at 65	RPM at 65	Gears for daily	Open
265/70R17	31.6 in	+0.6 in	63 mph	1,756	Keep 3.06s	Open →
285/70R17	32.7 in	+1.1 in	61 mph	1,697	3.42	Open →
33x10.50R17	33.0 in	+1.2 in	60 mph	1,682	3.42	Open →
33x12.50R17	33.0 in	+1.2 in	60 mph	1,682	3.42	Open →
255/80R17	33.1 in	+1.3 in	60 mph	1,678	3.42	Open →
285/75R17	33.8 in	+1.7 in	59 mph	1,640	3.42	Open →
315/70R17	34.4 in	+1.9 in	58 mph	1,615	3.42	Open →
35x11.50R17	35.0 in	+2.2 in	57 mph	1,585	3.55	Open →
35x12.50R17	35.0 in	+2.2 in	57 mph	1,585	3.55	Open →
37x11.50R17	37.0 in	+3.2 in	54 mph	1,500	3.73	Open →
37x12.50R17	37.0 in	+3.2 in	54 mph	1,500	3.73	Open →

Stock turns 1,819 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.

Trims

3 we have figures for

Trim	Tire	Transmission	Axle	Angles	Clearance	Open
Laredo 3.6 V6 Quadra-Trac II	P245/70R17	W5A580 5-speed automatic	3.06	26.3 · 18.8 · 26.5	8.6 in	Use →
Limited 3.6 / 5.7, standard suspension	P265/60R18	W5A580 5-speed automatic, 545RFE 5-speed automatic, 65RFE 6-speed automatic	3.06 / 3.47	26.3 · 18.8 · 26.5	8.6 in	Use →
Overland / Summit, Quadra-Lift air (Off-Road 2)	P265/50R20	W5A580 5-speed automatic, 545RFE 5-speed automatic, 65RFE 6-speed automatic	3.06 / 3.45 / 3.47	34.3 · 23.1 · 29.3	10.6 in	Use →

Size

Wheelbase: 114.8 in
Front overhang: 34.9 in
Rear overhang: 40.2 in
Height: 69 in
Body: SUV
Stock tires: P245/70R17, P265/50R20, P265/60R18

Transmissions and low range

W5A580 5-speed automatic (3.6): 3.59 · 2.19 · 1.41 · 1 · 0.83
545RFE 5-speed automatic (5.7, 2011): 3 · 1.67 · 1 · 0.75 · 0.67
65RFE 6-speed automatic (5.7, 2012-13): 3 · 1.67 · 1.5 · 1 · 0.75 · 0.67
Low range, mp3022 quadra-trac ii: 2.72:1
Low range, mp3022 quadra-drive ii: 2.72:1

Axles

Front: 195 mm (7.7 in) IFS front
Rear: IRS: 215 mm (8.4 in) V6, 225 mm (8.9 in) V8; ELSD optional on V8
3.06 ratio: Laredo 3.6 V6 Quadra-Trac II, Limited 3.6 / 5.7, standard suspension, Overland / Summit, Quadra-Lift air (Off-Road 2)
3.45 ratio: Overland / Summit, Quadra-Lift air (Off-Road 2)
3.47 ratio: Limited 3.6 / 5.7, standard suspension, Overland / Summit, Quadra-Lift air (Off-Road 2)

Brakes

Front rotor: 12.99 in, 330 mm
Front caliper piston: 48.0 mm
Rear rotor: 12.99 in, 330 mm
Rear: disc (solid, 330 x 14 mm)

Suspension

Front: double wishbone IFS, coil or air
Rear: independent multi-link, coil springs or Quadra-Lift air
Rear layout: Independent

Fuel economy

EPA highway: 22 mpg
Rated years: 2011–2013, 4WD

Brake upgrades

What bigger tires need →

SRT8 Brembo front brake swap (Mopar SRT calipers + 380 mm rotors)+18% brake torque13.0 → 15.0 in rotor · 6-piston · 20 in wheels or bigger · $1,432Mopar SRT8 front caliper pair only at JustForJeeps; rotors, pads, pins, hoses and backing plates extra. Not for WL / WL-L.

Aftermarket bumpers

1 listed

Makers 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 1

Chief Products Off-Road Front Bumper (cp-wk2-orfb)62.8 lb · $699

Rear

None listed yet.

Every calculator, set up for the Grand Cherokee

Tire sizeBigger tires: speedo, clearance, angles and brakes.Compare tires RegearHighway RPM on every ratio and mpg.Pick your gears Crawl ratioHow slow it creeps, against other trucks.Work out crawl SpeedometerWhat it really reads on new tires.Fix your speedo LinksAnti-squat and what a lift does to it.Check your links Your rigBuild sheet and measured angles.Start a build sheet LeaderboardsWhere the Grand Cherokee ranks against every stock truck.See where it ranks

Source: media.stellantisnorthamerica.com. No common aftermarket ring and pinion sets for the WK2 IRS/IFS units; gearing changes are usually OEM ratio swaps.

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.

Jeep Grand CherokeeWK2 early, 2011–13