Parts for your 1991 Suzuki Jimny-Wheel studs nuts

1991 Suzuki Jimny Wheel Studs & Nuts

Wheel studs and nuts are absolutely used on the 1991 Suzuki Jimny. This is confirmed by Suzuki factory literature: the Jimny/Sierra (SJ413/JA11) Factory Service Manual wheel and axle sections, plus the Suzuki Electronic Parts Catalogue (front hub group and rear axle group), list press-in wheel studs and conical-seat wheel nuts on a 5×139.7 PCD hub. Typical spec noted in those sources is M12 × 1.25 thread studs with 60° taper nuts, which aligns with Australian and New Zealand market Sierras/Jimnys of the era.

On this Jimny, the wheel studs and nuts do the hard yakka of clamping the wheel firmly to the hub, so the load is shared correctly between hub face and wheel. Good studs and correctly torqued nuts keep tyres running true, protect bearings, and stop the wheel from fretting on corrugations or during beach and bush work.

As part of regular servicing, it’s smart to check the lot. Nuts should spin on by hand for the first few turns, if they don’t, the threads could be stretched or cross-threaded. After off-road or salt exposure, clean the stud threads with a nylon brush and inspect for rust pitting. Don’t oil or grease the threads—torque specs assume dry threads. Tighten in a star pattern and re-check torque after 50–100 km, especially after fitting new wheels or doing a rotation.

• Typical torque window for this platform: 95–110 Nm (70–81 ft·lb). Always follow the exact figure in the vehicle’s service manual.
• Match nut seat to wheel seat (most OEM steel rims use a 60° cone). Wrong seats can loosen and damage the rim.
• Replace any stud with rolled threads, visible necking, or if it’s spun in the hub. Use quality studs (commonly 10.9 grade) and matching nuts.
• Fronts are press-in studs through the hub/rotor, removal may require pulling the freewheeling hub and using a press. Rears press through the drum/axle flange.

If upgrading to aftermarket wheels, check PCD (5×139.7), centre bore clearance, and nut style. For vehicles that see regular sand or water crossings, periodic inspection and timely replacement of suspect studs and nuts is cheap insurance against wheel-off dramas.

Popular questions about 1991 Suzuki Jimny wheel studs & nuts

What size are the wheel studs and nuts on a 1991 Jimny?
Most use M12 × 1.25 studs with 60° conical-seat nuts on a 5×139.7 PCD hub. Always verify against the vehicle’s build and wheels fitted, as aftermarket rims may require different nut styles (e.g., mag-seat or washered nuts).

What torque should the wheel nuts be tightened to?
Follow the service manual figure, a typical spec for this platform is 95–110 Nm. Use a calibrated torque wrench, tighten in a star pattern, and re-torque after 50–100 km or any wheel-off work.

How do you know a stud needs replacing?
If a nut won’t start by hand, the stud shows rolled or flattened threads, the stud spins in the hub, there’s visible necking/stretch, or corrosion pitting is present, it’s time to replace. Don’t mix and match damaged hardware—swap the affected studs and fit matching nuts.