1991 Dodge Ram 1500 Lug Nut Torque & Bolt Specs

The 1991 Dodge Ram 1500 lug nut torque is 100 ft-lbs (135 Nm), tightened with a See notes socket on M12x1.5 studs. Torque in a star pattern in two passes (snug, then final), and re-check after the first 50–100 miles of driving. Use a calibrated torque wrench — not an impact gun — for the final pass.

Lug nut torque: 100 ft-lbs (135 Nm) · Socket size: See notes · Thread: M12x1.5.

This page is the OEM-referenced fastener summary for the 1991 Dodge Ram 1500. Use it before any maintenance or repair job where torque values matter — brake work, wheel changes, suspension service, engine teardowns, or oil changes. Specs are pulled from manufacturer service literature, cross-checked against community data, and updated as new chassis variants become available.

Stellantis (Jeep/Ram/Dodge/Chrysler) torque values: Wrangler/Cherokee lug nuts spec 100 ft-lbs (135 Nm), Ram 1500 specs 135 ft-lbs (183 Nm), Ram 2500/3500 specs 160 ft-lbs (217 Nm). Most use a 19mm or 22mm socket with M14x1.5 thread on trucks. The Wrangler's hub-centric ring is critical — do not run hub-piloted wheels without it.

Common fastener categories on the 1991 Dodge Ram 1500

Wheel / lug nut torque and thread spec (covered above)
Brake caliper bracket bolts (typically 80-130 ft-lbs) and slide/guide pins (18-35 ft-lbs)
Engine oil drain plug torque — rarely above 30 ft-lbs; always use a new crush washer
Transmission pan, valve cover, and intake manifold bolts (low torque, often 89-106 in-lbs)
Suspension control arm, sway bar, tie rod end and ball joint torque
Spark plug torque (typically 10-15 ft-lbs on aluminum heads — do not exceed)
Differential cover bolts (RWD/4WD only) and transfer case fasteners

Repair guidance for this model year

Heads up for 1991 Dodge Ram 1500 owners: Vehicles this age frequently have seized fasteners due to thread corrosion. Apply penetrating oil (PB Blaster, Kroil) 24 hours before any wrenching, and have a thread chaser on hand. Lug studs are particularly prone to thread damage at this age; if a nut spins on without engaging, the stud is stretched and must be replaced before the wheel goes back on.

Tools you will need

SAE socket set (1/4"-7/8"), 6-point impact-rated
Calibrated torque wrench (10-150 ft-lbs covers most automotive jobs; add a 0-250 ft-lbs wrench for truck lug nuts)
Breaker bar (24" minimum) for initial loosening
Penetrating oil (PB Blaster or Kroil) for any fastener over 5 years old
Anti-seize on stainless or dissimilar-metal threads; thread-locker (Loctite blue) on critical reassembly

Frequently asked questions

What is the lug nut torque on a 1991 Dodge Ram 1500?

The OEM-specified lug-nut torque for the 1991 Dodge Ram 1500 is 100 ft-lbs (135 Nm), using a See notes socket on M12x1.5 thread studs. Use a calibrated torque wrench in a star pattern, in two passes (50% and 100%), and re-check after 50-100 miles of driving.

What socket size do I need for the 1991 Dodge Ram 1500 lug nuts?

The 1991 Dodge Ram 1500 uses a See notes socket. A 6-point impact-rated socket is recommended over a 12-point chrome socket — 12-points round off lug nuts under impact-driver use.

Are the 1991 Dodge Ram 1500 fasteners metric or SAE?

SAE inch is the standard for this vehicle. Most fasteners on this vehicle are SAE inch, common sizes 1/4", 5/16", 3/8", 7/16", 1/2". Bolt-head markings are the fastest way to confirm grade and material at the bench.

Other Dodge Ram 1500 years

Same model, different model year — fastener spec may change. Always confirm against the year for your VIN.

→ 1991 Dodge Ram 1500 oil drain plug torque & size

→ 1991 Dodge Ram 1500 suspension & steering torque specs (control arm, ball joint, tie rod)

All 44 1991 Dodge Ram 1500 fastener specs

Per-bolt torque, wrench size, and thread spec for the 1991 Dodge Ram 1500, sourced from OEM service literature and verified against community shop data. Values pair imperial (ft-lb) and metric (Nm) where the manufacturer publishes both.

Wheels — 1991 Dodge Ram 1500

Wheel and lug nut spec for the 1991 Dodge Ram 1500. At the all four wheels, the lug nut torques to 100 ft-lbs (135 Nm) (19mm drive, M12x1.5 thread).

Brakes — 1991 Dodge Ram 1500

Brake fasteners on the 1991 Dodge Ram 1500 — caliper bracket, slide pins, and banjo bolt torque follow. For the rear brake, plan for a See notes tool; final torque is 120 ft-lbs (rear brake caliper bracket bolts (disc brake — 4th gen)). Rear drum brake backing plate bolts — 3rd gen tightens to 48 ft-lbs, takes a See notes driver, located at the rear brake. The front brake caliper bracket bolts uses a See notes drive, torqued to 130 ft-lbs at the front brake. At the front brake, the front brake caliper slide pins torques to 24 ft-lbs (2009-2014); 31 ft-lbs (2015+) (See notes drive). For the rear brake, plan for a See notes tool; final torque is 32 ft-lbs (rear brake caliper slide pins (disc brake — 4th gen)).

Engine — 1991 Dodge Ram 1500

Engine bolt-by-bolt torque for the 1991 Dodge Ram 1500, including the long block, valve covers, and intake. Oil drain plug tightens to 20 ft-lbs (27 Nm), runs on M14x1.5 threads, located at the oil pan.

Drivetrain — 1991 Dodge Ram 1500

Drivetrain and driveline fasteners for the 1991 Dodge Ram 1500 — axle, transmission, and differential plugs. The rear ring gear bolts — 10.5-in aam uses a See notes drive, torqued to 175 ft-lbs at the rear differential. At the rear differential, the rear pinion nut — 9.25-in torques to 210 ft-lbs minimum (285 Nm) — set to achieve correct preload (See notes drive). For the front differential, plan for a See notes tool; final torque is 30 ft-lbs (front differential cover bolts (4wd) — aam 9.25-in ifs). Transfer case flange bolts (output yoke) tightens to 65 ft-lbs, takes a See notes driver, located at the transfer case. The transfer case mounting nuts (to transmission adapter) uses a See notes drive, torqued to 30–41 ft-lbs (NV241/NV243/NV244/NV273) at the transfer case. At the rear differential, the rear differential cover bolts — 9.25-in aam axle torques to 30 ft-lbs (See notes drive). For the front axle, plan for a See notes tool; final torque is Beginning: 132 ft-lbs | Rotate 5-10 times | Final: 263 ft-lbs (front axle hub nut (4wd — 3rd gen solid axle)). Rear driveshaft bolts (to rear diff pinion yoke) tightens to 85 ft-lbs, takes a See notes driver, located at the rear driveshaft. The front driveshaft bolts (to front diff pinion flange) uses a See notes drive, torqued to 85 ft-lbs at the front driveshaft. At the rear differential, the rear differential cover bolts — 10.5-in aam axle torques to 35 ft-lbs (See notes drive). For the drivetrain, plan for a See notes tool; final torque is 50 ft-lbs (transmission mount / insulator bolts). Transmission crossmember bolts tightens to 50 ft-lbs, takes a See notes driver, located at the drivetrain. The front axle hub nut (4wd — 4th gen ifs) uses a See notes drive, torqued to 185 ft-lbs at the front axle. At the rear differential, the rear ring gear bolts — 9.25-in chrysler/aam torques to 65 ft-lbs (Chrysler 9.25"); 103 ft-lbs (AAM 9.25" IFS) (See notes drive).

Suspension — 1991 Dodge Ram 1500

Suspension and chassis fastener torque for the 1991 Dodge Ram 1500 — strut, control arm, and sway bar values. At the rear suspension, the rear leaf spring front/rear eye bolt nuts — 3rd gen torques to 170 ft-lbs (standard); 120 ft-lbs (SRT-10) (See notes drive). For the front suspension, plan for a See notes tool; final torque is Top (bar side): 16–20 ft-lbs; Bottom (control arm side): 75 ft-lbs (front sway bar end link nuts). Rear shock absorber (upper and lower) — 4th gen coil spring tightens to 100 ft-lbs, takes a See notes driver, located at the rear suspension. The rear leaf spring u-bolt nuts — 3rd gen uses a See notes drive, torqued to 110 ft-lbs at the rear suspension. At the rear suspension, the rear lower control arm bolts — 4th gen coil spring torques to 200 ft-lbs (See notes drive). For the front suspension, plan for a See notes tool; final torque is 45 ft-lbs (front sway bar bracket bolts). Upper control arm bolts to frame — 3rd gen tightens to 97 ft-lbs, takes a See notes driver, located at the front suspension. The lower control arm bolts to frame — 4th gen uses a See notes drive, torqued to 155 ft-lbs at the front suspension. At the front suspension, the lower ball joint nut — 3rd gen (2002-2008) torques to 60 ft-lbs (See notes drive). For the front suspension, plan for a See notes tool; final torque is 40 ft-lbs (front shock absorber upper nut — 3rd gen). Steering shaft pinch bolt tightens to 37 ft-lbs, takes a See notes driver, located at the steering. The tie rod end nut (outer) uses a See notes drive, torqued to 45 ft-lbs + 90° at the steering. At the front suspension, the lower ball joint nut — 4th gen (2009-2018) torques to 37–38 ft-lbs + 90° (See notes drive). For the rear suspension, plan for a See notes tool; final torque is 120 ft-lbs (rear upper control arm bolts — 4th gen coil spring). Upper ball joint nut — 3rd gen (2002-2008) tightens to 60 ft-lbs, takes a See notes driver, located at the front suspension. The upper ball joint nut — 4th gen (2009-2018) uses a See notes drive, torqued to 40 ft-lbs + 200° (TTY sequence) at the front suspension. At the front suspension, the lower control arm bolts to frame — 3rd gen torques to 150–210 ft-lbs (varies by specific bolt) (See notes drive). For the rear suspension, plan for a See notes tool; final torque is 100 ft-lbs (rear shock absorber (upper and lower) — 3rd gen leaf spring). Lug nuts tightens to 100 ft-lbs (135 Nm), takes a See notes driver, runs on M12x1.5 threads, located at the wheel. The upper control arm bolts to frame — 4th gen uses a See notes drive, torqued to 130 ft-lbs at the front suspension. At the front suspension, the front shock absorber lower bolt — 3rd gen torques to 100 ft-lbs (See notes drive).

Body — 1991 Dodge Ram 1500

Body fasteners on the 1991 Dodge Ram 1500. For the cab / body, plan for a See notes tool; final torque is 40–45 ft-lbs (cab mount bolts). Bed / box mount bolts tightens to 35 ft-lbs, takes a See notes driver, located at the bed / body.

New to torquing wheels? Read our How lug nut torque works — the complete guide for star-pattern sequence, re-torque intervals, and how to read a lug spec — then use the 1991 Dodge Ram 1500 numbers above.

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