Isuzu Trooper
1992–2002 2nd gen

Factory gearing, tires, angles and brakes for the Trooper, 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

108.7 in wheelbase · 31.1 in front · 39 in rear overhang

Stock tireP245/70R1629.5 in tall

Axle ratio4.555Factory

Crawl ratio39.1:1Best trim: S / LS 3.2 V6, 5-speed manual

Angles39 · 22 · 31°Approach, breakover, departure

Clearance8.5 inFactory figure

Highway mpg17EPA

Tire upgrades, worked out

S / LS 3.2 V6, 5-speed manual, 4.555s, from P245/70R16

Tire	Height	Under the diffs	Speedo at 65	RPM at 65	Gears for daily	Open
265/75R16	31.6 in	+1.1 in	61 mph	2,544	4.88	Open →
285/75R16	32.8 in	+1.7 in	58 mph	2,452	5.13	Open →
33x10.50R16	33.0 in	+1.7 in	58 mph	2,440	5.13	Open →
255/85R16	33.1 in	+1.8 in	58 mph	2,435	5.13	Open →
315/75R16	34.6 in	+2.5 in	55 mph	2,327	5.29	Open →
35x12.50R16	35.0 in	+2.7 in	55 mph	2,300	5.38	Open →

Stock turns 2,729 rpm at 65 in top gear. Flotation sizes are nominal; most measure a little short mounted.

Trims

2 we have figures for

Trim	Tire	Transmission	Axle	Angles	Clearance	Open
S / LS 3.2 V6, 5-speed manual	P245/70R16	5-speed manual	4.555	39 · 22 · 31	8.5 in	Use →
S / LS 3.2 V6, 4-speed automatic	P245/70R16	4-speed automatic	4.555	39 · 22 · 31	8.5 in	Use →

Size

Wheelbase: 108.7 in
Front overhang: 31.1 in
Rear overhang: 39 in
Height: 72 in
Body: SUV
Stock tires: P245/70R16

Transmissions and low range

5-speed manual: 3.767 · 2.248 · 1.404 · 1 · 0.809
4-speed automatic: 2.856 · 1.618 · 1 · 0.723
Low range, tc92: 2.28:1

Axles

Front: Isuzu IFS front differential
Rear: Isuzu semi-floating banjo rear axle
4.555 ratio: All trims

Brakes

Front rotor: 11.02 in, 280 mm
Front caliper piston: 61.0 mm
Rear rotor: 12.32 in, 313 mm
Rear: disc

Suspension

Front: double wishbone IFS, torsion bars
Rear: 4-link with lateral rod, coil springs
Rear layout: Factory 4-link

Fuel economy

EPA highway, automatic: 17 mpg
EPA highway, manual: 17 mpg
Rated years: 1992–2002, 4WD

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 Trooper sees how it does on their tires and lift.

Front 1

ARB Deluxe Winch Bull Bar, Trooper 1992-1998 (3444050) / 1998-2002 (3444070)$1,546 · winch ready

Rear

None listed yet.

Every calculator, set up for the Trooper

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 Trooper ranks against every stock truck.See where it ranks

Source: archive.org.

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.

Isuzu Trooper1992–2002 2nd gen