Land Rover Defender 90
L663, 2020–

Factory gearing, tires, angles and brakes for the Defender 90, 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

101.9 in wheelbase · 33.3 in front · 45.3 in rear overhang

Stock tire255/70R1832.1 in tall

Axle ratio3.31–4.1Factory, by trim

Crawl ratio57.2:1Best trim: 90 P400 3.0 MHEV, air, off-road height

Angles31 · 25 · 37.9°Approach, breakover, departure

Clearance11.6 in8.5 to 11.6 in by trim

Highway mpg21EPA

Tire upgrades, worked out

90 P300 2.0, coil, 255/70R18, 4.1s, from 255/70R18

Tire	Height	Under the diffs	Speedo at 65	RPM at 65	Gears for daily	Open
285/65R18	32.6 in	+0.3 in	64 mph	1,834	Keep 4.1s	Open →
33x12.50R18	33.0 in	+0.5 in	63 mph	1,811	Keep 4.1s	Open →
275/70R18	33.2 in	+0.6 in	63 mph	1,802	Keep 4.1s	Open →
35x11.50R18	35.0 in	+1.5 in	60 mph	1,707	4.56	Open →
35x12.50R18	35.0 in	+1.5 in	60 mph	1,707	4.56	Open →
37x12.50R18	37.0 in	+2.5 in	56 mph	1,615	4.88	Open →

Stock turns 1,864 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.

Trims

8 we have figures for

Trim	Tire	Transmission	Axle	Angles	Clearance	Open
90 P300 2.0, coil, 255/70R18	255/70R18	ZF 8-speed automatic, 4.714 first	4.1	31 · 25 · 37.9	8.9 in	Use →
90 P300 2.0, air, standard height	255/60R20	ZF 8-speed automatic, 4.714 first	4.1	30.1 · 24.2 · 37.6	8.5 in	Use →
90 P300 2.0, air, off-road height	255/60R20	ZF 8-speed automatic, 4.714 first	4.1	37.5 · 30.7 · 41.9	11.6 in	Use →
90 D250/D300 3.0 diesel, air, standard height	255/60R20	ZF 8-speed automatic, 5.5 first	3.31	30.1 · 24.2 · 37.6	8.5 in	Use →
90 D250/D300 3.0 diesel, air, off-road height	255/60R20	ZF 8-speed automatic, 5.5 first	3.31	37.5 · 30.7 · 41.9	11.6 in	Use →
90 P400 3.0 MHEV, air, off-road height	255/60R20	ZF 8-speed automatic, 5.5 first	3.55	37.5 · 30.7 · 41.9	11.6 in	Use →
90 V8 P525, air, standard height	255/60R20	ZF 8-speed automatic, 4.714 first	3.55	30.1 · 24.2 · 33.5	8.5 in	Use →
90 V8 P525, air, off-road height	255/60R20	ZF 8-speed automatic, 4.714 first	3.55	37.5 · 30.7 · 39.8	11.6 in	Use →

Size

Wheelbase: 101.9 in
Front overhang: 33.3 in
Rear overhang: 45.3 in
Height: 78 in
Body: SUV
Stock tires: 255/60R20, 255/70R18

Transmissions and low range

ZF 8-speed automatic, 4.714 first (2.0 P300, 2.0 diesel, V8): 4.714 · 3.143 · 2.106 · 1.667 · 1.285 · 1 · 0.839 · 0.667
ZF 8-speed automatic, 5.5 first (3.0 P400 and 3.0 D250/D300 MHEV): 5.5 · 3.52 · 2.2 · 1.72 · 1.317 · 1 · 0.823 · 0.64
Low range, l663_2spd: 2.93:1

Axles

Front: Open front diff, independent SLA
Rear: Integral-link IRS; optional Active Locking Rear Differential
3.31 ratio: 90 D250/D300 3.0 diesel, air, standard height, 90 D250/D300 3.0 diesel, air, off-road height
3.55 ratio: 90 P400 3.0 MHEV, air, off-road height, 90 V8 P525, air, standard height, 90 V8 P525, air, off-road height
4.1 ratio: 90 P300 2.0, coil, 255/70R18, 90 P300 2.0, air, standard height, 90 P300 2.0, air, off-road height

Brakes

Front rotor: 14.29 in, 363 mm
Rear rotor: 13.78 in, 350 mm
Rear: disc (ventilated)

Suspension

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

Fuel economy

EPA highway: 21 mpg
Rated years: 2020–2026, 4WD

Aftermarket bumpers

4 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 Defender 90 sees how it does on their tires and lift.

Front 2

Expedition One Defender 2020+ Front Bumper (DFNDR-FB)150 lb · $2,520 · winch ready
Proud Rhino Winch Bumper, Defender L663 (Non A-Bar and A-Bar versions)$2,388 · winch ready

Rear 2

Every calculator, set up for the Defender 90

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 Defender 90 ranks against every stock truck.See where it ranks

Source: jlrnewsroom.media.

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.

Land Rover Defender 90L663, 2020–