Parts for your 2012 Nissan Pulsar-Wheel studs nuts

2012 Nissan Pulsar wheel studs and nuts — what they do and how to look after them

Yes — the 2012 Nissan Pulsar uses wheel studs with separate wheel nuts. This setup is shown in Nissan’s technical literature: the Nissan Electronic Parts Catalogue for the C12 hatch and B17 sedan lists press-in hub studs and matching nuts, and the Nissan Service Manual (C12/B17), Wheels & Tyres (WT) and front/rear axle sections detail stud replacement and wheel nut torque procedures. So wheel studs and nuts are absolutely relevant to this model.

On the Pulsar, the studs are pressed into the hub and stay put, the nuts clamp the wheel to the hub face. That clamping force is what keeps the wheel centred and secure, so clean threads and correct torque really matter. Most Pulsars of this era use M12 x 1.25 studs with conical-seat nuts, but always check by VIN or with the original wheel set-up to confirm seat type and hex size.

As part of regular servicing, it’s smart to give the studs and nuts a once-over. Look for rusty or stretched studs, damaged or flattened nut seats, and any cross-threading. If a nut runs rough by hand, stop — forcing it with a rattle gun usually makes things worse. Replace any suspect hardware straight away, there’s no set interval, it’s condition-based.

When wheels come off for tyres, brakes or rotation, refit using a star pattern and a torque wrench. Avoid lubricants or anti-seize on the threads unless a service bulletin specifies it — lubrication changes clamping force. If exact torque isn’t at hand, many Nissan passenger cars of this generation sit roughly around the 100–110 N·m mark, but the correct figure should be confirmed in the Pulsar’s service data. Re-check torque after 50–100 km, especially on freshly fitted wheels.

Replacing a damaged stud on a Pulsar is straightforward for a workshop: the brake rotor/drum comes off, the old stud is pressed out, and a new one is pressed in from behind the hub flange. If one stud is gone, consider replacing any others that look marginal, and always fit nuts that match the wheel’s seat profile (conical vs mag-seat) to avoid fretting and loosening. Driving with a missing or broken stud isn’t recommended — it increases load on the remaining hardware and can lead to wheel vibration or loss.

• Hand-start every nut to avoid cross-threading
• Use a star pattern for tightening and loosening
• Torque with a calibrated wrench, avoid hammering them tight with a rattle gun

Popular questions about 2012 Nissan Pulsar wheel studs and nuts

What size are the wheel studs and nuts on a 2012 Nissan Pulsar?
Most 2012 Pulsars (C12/B17) use M12 x 1.25 studs with conical-seat (60° taper) nuts and a common 21 mm hex. That said, always match the nut seat to the wheel design and confirm by VIN or parts catalogue, especially if the car has aftermarket wheels.

Using the wrong seat type or thread pitch can damage the wheel or studs and lead to loosening. If unsure, a quick check at a parts counter with your VIN will nail it.

What’s the correct wheel nut torque for a 2012 Pulsar?
Refer to the Pulsar service manual or the under-bonnet label for the exact spec. Many Nissans of this era land around 100–110 N·m, but the correct value depends on the specific model and wheel type. Always tighten in a star pattern and re-check after 50–100 km.

A torque wrench is the go — avoid relying solely on a rattle gun, which can easily over-torque and stretch studs.

Can a single broken stud be replaced, or do they all need doing?
A single damaged stud can be replaced on its own. The hub stays on the car in many cases, the rotor/drum is removed, the old stud is pressed out, and a new one pressed in. If others look corroded or stretched, replace them at the same time for peace of mind.

After any stud replacement, fit matching nuts and torque correctly to keep clamping even and avoid vibrations.