4mm tyres

Types of 4mm tyres

4 mm tyres refer to the size of the tread depth of the tyre. It is not a common tyre size but rather a worn-out state of a standard tyre. When the tyre reaches 4 mm, it is time for replacement. The type of 4 mm tyre differs based on the original tyre fitted on the vehicle. Here are some common types:

• 4x4 tyres: Also known as off-road tyres, these are fitted on 4x4 vehicles like SUVs and trucks. They have a large tread depth and aggressive tread patterns that offer better traction on uneven surfaces. When the 4x4 vehicle gets urban roads with tarmacked roads, the all-terrain tyres might wear out quickly. The 4 mm tyres on the off-road vehicles may exhibit less aggressive treads to improve fuel efficiency and reduce noise when driving on paved roads.
• Electric vehicle (EV) tyres: EVs have special tyres fitted on the vehicles at the time of manufacture. The tyres are designed to meet the high torque demands of electric motors while improving the vehicle's range. 4 mm EV tyres have reduced tread depths and may need retreading to prolong their life. The retreaded tyres use modern technologies to enhance the quality of the used tyre. The process involves cleaning the old tyre, inspecting it for damages, and applying a new tread.
• Summer tyres: The standard summer tyre comes in different tread depths. Premium summer tyres have tread depths measuring 3.5 mm to 4.5 mm. The 4 mm tyres on vehicles with premium summer tyres may offer good dry and wet traction, but the performance may start deteriorating. It is worth noting that the difference in performance between the worn-out summer tyre and the new model is significant. Therefore, business owners who rent out summer tyre-fitted vehicles should consider changing the tyres.
• Load carrier vehicle tyres: Commercial vehicles like vans need proper maintenance to keep them on the road. The 4 mm tyres on the vans may affect fuel efficiency and increase the cost per mile. The van's operating agency may use tyres with low rolling resistance to reduce the impact of the worn-out tyre. The LCV tyres have a large tread depth, measuring 8 mm to 10 mm, and can carry the load.

Specification and maintenance of 4mm tyres

4 mm tyre size is a common specification sought by retailers looking to meet the needs of various customers. However, it is important to note that the specifications of 4 mm tyres may differ depending on the manufacturer and the intended application. Here are general specifications of 4 mm tyres:

• Width: 4 mm tyres have a nominal width of 4 mm, which indicates the measurement across the tyre's tread surface.
• Aspect ratio: 4 mm tyres have an aspect ratio of 100%. This means the sidewall height is equal to the tyre's width, ensuring a rounded profile suitable for various applications.
• Construction type: 4 mm tyres are manufactured using steel cord, which provides strength and durability for different types of surfaces and uses.
• Load rating: 4 mm tyres have a load rating of 50 kg. This specification indicates the maximum load capacity when the tyre is properly inflated and is a critical consideration for applications involving carts or other load-carrying vehicles.
• Speed rating: 4 mm tyres have a speed rating of 5 km/h. The speed rating is essential for ensuring the tyre's performance and safety at various speeds.
• Diameter: 4 mm tyres have a small diameter of 12 mm. This size contributes to their agility and suitability for specific applications, such as robotics or precision equipment.
• Tread pattern: 4 mm tyres feature a smooth tread design. The tread design ensures low rolling resistance and good grip on various surfaces.

4 mm tyre maintenance requirements

Below are some key tyre maintenance requirements that ensure optimal performance and longevity.

• Regular inspection: Check the tyres regularly for signs of wear, damage, or embedded debris. Also, inspect the sidewalls for cracks, bulges, or punctures. Early detection of tyre issues helps to prevent more serious problems.
• Tread depth monitoring: Monitor the tyre tread depth using a tread depth gauge or the manufacturer's recommended method. If the tread depth approaches the wear limit, replace the tyres to maintain safety and performance.
• Proper tyre pressure: Tyre pressure should be checked at least once a week or before long trips. Tyre pressure should be maintained at the manufacturer's recommended level. Under-inflated tyres wear faster and increase the risk of blowouts, while over-inflated tyres reduce traction and cause uneven wear.
• Rotation: 4 mm tyres should be rotated at least once every 7,000 miles or during regular maintenance. Tyre rotation ensures even wear and maximizes grip and stability.
• Alignment and balancing: Proper alignment and balancing of the 4 mm tyre are crucial for uniform wear and optimal vehicle handling. Misalignment causes uneven tread wear and affects vehicle stability.
• Cleaning: Clean the 4 mm tyres regularly to remove dirt, mud, and other contaminants. Use a mild detergent and water to prevent damage to the tyre material and maintain its appearance.

How to Choose 4mm Tyres

Choosing the right 4 mm tyre can be a daunting task, but it doesn't have to be. By considering a few important factors, the perfect 4 mm tyre for any vehicle can be found in no time. Before making that all-important purchase decision, here's what to consider:

• Driving Needs

  The first thing to think about is the type of driving conditions and needs. Is it on the highway, off-road, or a combination? If the areas are wet or snowy, all-season 4mm tyres may be ideal, while performance ones are better suited for high-speed on-road driving.

• Vehicle Compatibility

  Check the vehicle's manual or the driver's side door jamb for the recommended tyre size and specifications. Ensure the new 4 mm tyres match this information for optimal performance and safety.

• Quality and Brand

  Invest in well-known brands that provide high-quality 4 mm tyres. Read reviews and ask for recommendations to ensure reliability and durability. Premium tyres may have a higher initial cost, but they often last longer and perform better than budget options.

• Tread Pattern and Depth

  The tread design impacts the tyre's grip on the road. For wet or snowy areas, tyres with deeper treads or specialised patterns provide better traction. Shallower treads are sufficient for mostly dry, smooth roads. Remember, 4 mm new tyres have better performance than 4 mm used tyres.

• Budget

  Set a budget beforehand, but don't forget to consider the value. Premium tyres may cost more, but their durability and performance can save money in the long run. Also, consider fuel efficiency when selecting 4 mm tyres, as properly rated ones can lower fuel costs.

• Noise Level

  If the noise level is a concern, particularly with high-performance tyres, consider those designed to minimise road noise. These generally have a more advanced tread pattern or special materials.

How to DIY and Replace 4mm tyres

Most 4 mm tyres can be replaced by following the steps below. The tools needed for the task will be listed in the DIY section.

• Remove the wheel

  To change a 4mm tyre, one must first remove the wheel from the car. Begin by loosening the lug nuts and raising the car with a jack. After that, the wheel can be taken off by completely loosening the lug nuts and removing them.

• Deflate the tyre

  The next step is to deflate the tyre. This is done by removing the valve cap and depressing the valve core's pin with a tool, such as a flathead screwdriver or a valve core tool. This allows air to escape from the tyre and makes it easier to remove.

• Remove the old tyre

  Removing the old tyre entails breaking the bead, which is the tyre's seal around the wheel rim, and then prying the tyre off the wheel using a tyre iron or similar tool. Bead-breaking tools or compressors can also be used to assist in separating the bead if the tyre is particularly tight on the rim.

• Prepare the wheel

  After the old tyre has been removed, the wheel should be cleaned and inspected for any damage. This is also a good opportunity to replace the wheel's valve if necessary. Before installing the new 4mm tyres, the wheel should be lubricated to facilitate mounting.

• Mount the new tyre

  To install the new 4mm tyre onto the wheel, align the valve stem with the rim's hole and carefully push the tyre onto the rim. A bead lube should be applied to the tyre and wheel to make this easier. A bead-breaking tool may also be necessary to fully seat the new tyre on the rim.

• Inflate the new tyre

  Once the new tyre has been mounted, it must be inflated to the recommended pressure using a tyre inflator or an air compressor. Before completely inflating the new 4mm tyres, check that the bead is properly seated on the rim and that there are no leaks. Replace the valve cap once the tyre has been inflated.

• Reinstall the wheel

  Reinstalling the wheel involves putting the wheel back onto the car, tightening the lug nuts by hand, and lowering the vehicle using the jack. After lowering the car, the lug nuts must be tightened with a torque wrench to the manufacturer's specifications. Once the wheel has been reinstalled, the car can be safely driven.

Q and A

Q1: What are the advantages of thicker 4mm tyres?

A1: Thicker 4mm tyres have some benefits. They give more grip on the road or path, making it less likely to slide. They also offer better protection against sharp things that could pop the tyre. Plus, thicker tyres can soak up bumps and holes in the road, making for a smoother ride. They could also last longer than thinner tyres.

Q2: Do 4mm tyres have any benefits?

A2: Yes, 4mm tyres can be quite useful in some situations. Their lower profile can provide better handling and responsiveness, especially on dry roads. They also offer improved puncture resistance and durability, making them suitable for off-road or uneven terrain conditions. Besides, vehicles with 4mm tyres have a more streamlined appearance, which is aesthetically pleasing to some people.

Q3: Can 4mm tyres be used on any vehicle?

A3: No, 4mm tyres cannot be used on any vehicle. They are designed for specific types of vehicles, such as those requiring particular tyre sizes and specifications. It is essential to choose the correct tyre size and type compatible with the vehicle's make and model to ensure safety and performance.

Q4: How long can 4mm tyres last?

A4: The lifespan of 4mm tyres depends on several factors, including driving habits, road conditions, tyre maintenance, and more. Generally, 4mm tyres can last from 30,000 to 50,000 kilometers. However, checking the tyre's tread depth and overall condition regularly and replacing it in time when it is worn out is essential for safety and performance.