The noun zircon is a noun.

Yes, tyres do have a use-by date, technically referred to as an "age limit". This is because the materials in tyres deteriorate over time, regardless of use. Most manufacturers recommend replacing tyres every 6 to 10 years, depending on conditions and usage. The age of a tyre can be determined by the DOT code on its sidewall, which includes the week and year of manufacture. Even if a tyre shows minimal wear, aging can lead to reduced performance and increased risk of failure. Therefore, it's crucial to check both the physical condition of tyres and their age. Regular inspections by professionals can help identify when replacements are necessary to ensure safety on the road.

For safe transportation. low-clearance vehicles are designed to transport heavy. heavy or low-center-of-gravity cargo. It can be used to transport heavy machinery. large appliances. industrial equipment or large cargo. It may also be used to transport cargo across bridges. tunnels. or areas without strong power lines. However. this has nothing to do with the type of product. but rather the size and transportation requirements.