Welcome back! In the previous lesson, you successfully removed the damaged tyre from your vehicle. The car is safely supported on the jack, and the wheel hub is now ready for the spare.
This lesson addresses the next crucial step: mounting the spare tyre correctly onto the wheel hub. We'll focus on the technique for lifting and aligning the spare, ensuring it sits perfectly flush against the hub. This is a critical step for safety, as a poorly mounted wheel can lead to instability and damage. Your goal is to get the spare wheel into position, ready to be secured.
Part 1: Understanding the Connection
Before you lift the spare, let's quickly examine the parts you're connecting. Look at the exposed wheel hub on your car. You'll see a set of threaded bolts sticking out; these are the wheel studs.
Now, look at the spare tyre. You'll see a matching pattern of holes. The goal is simple but vital: slide the holes of the wheel over the studs on the hub.
Why is a perfect fit so important?
The wheel must sit completely flat, or flush, against the surface of the hub. If there's any gap, or if the wheel is crooked, the lug nuts won't be able to secure it properly. This can cause dangerous vibrations while driving and may even lead to the wheel coming loose. Taking a moment to align it correctly is fundamental to a safe tyre change.
Part 2: Lifting and Mounting the Spare Tyre
The spare tyre, even a smaller temporary one, can be heavy and awkward. As we've discussed before, always use proper lifting technique: keep your back straight and lift with your legs.
The following guide from Michelin provides a clear, concise instruction for this step.
This guide from Michelin breaks down the tyre change process into simple, manageable steps. We'll focus on the specific step for mounting the spare.
Please read 'Step 10: Mount the spare tyre'. The instruction is brief but captures the key actions: aligning the tyre with the lug bolts (what we're calling wheel studs) and pushing it into place.
Let's break that process down further:
- Position the Spare: Move the spare tyre so it's right in front of the wheel hub. This minimizes how far you have to carry it.
- Grip and Lift: Grab the tyre with both hands at the 3 o'clock and 9 o'clock positions for a balanced grip. Lift it up to the level of the hub. It can be helpful to do this while sitting or kneeling on the ground, which gives you more stability and leverage.
- Align the Holes: Carefully line up the holes in the wheel with the wheel studs. You may need to rotate the tyre slightly to get the pattern to match.
- Slide it On: Once aligned, push the tyre straight back onto the studs. It should slide on until the back surface of the wheel is firmly against the hub.
The image below shows this exact moment of alignment.
Troubleshooting a Stubborn Fit
Sometimes the wheel won't slide on easily, even if the holes look aligned.
- The Weight: The wheel is heavy. If you're struggling to hold it up, try resting the bottom edge of the tyre on your foot or the ground to support its weight. This allows you to focus on aligning the top hole first, then levering the bottom into place.
- Minor Misalignment: The fit can be snug. Gently wiggle the tyre up and down or side to side to help the studs pass through the holes. Do not try to force it, as this could damage the threads on the studs.
You'll know the wheel is correctly mounted when it is sitting flat against the hub and you can see the ends of the wheel studs poking through the holes.
Once the wheel is on, it might be a little loose before the lug nuts are on. You can hold it in place with one hand or brace it with your knee while you prepare for the next step.
Conclusion
Great job! You have successfully lifted, aligned, and mounted the spare tyre onto the wheel hub. This is the turning point in the process—the damaged component is off, and the replacement is now in position.
Key Takeaways:
- Safe lifting is essential when handling the heavy spare tyre.
- The primary goal is to align the holes in the wheel with the studs on the hub.
- Push the wheel straight on until it sits completely flush against the hub surface.
- If the wheel feels stuck, check your alignment and use small wiggling motions rather than force.
The spare tyre is now resting on the hub, ready to be secured. In our next lesson, we will cover how to hand-tighten the lug nuts to secure the spare tyre before lowering the vehicle. This is the first step in fastening the wheel and ensuring it stays put.