Understanding the markings on your tyre may not seem like an important skill to know, after all, you expect the experts fitting your tyre at the tyre dealership to be sure of their business.<\/p>\n\n\n\n
On the sidewall, you will see four numbers standing alone, just beneath the manufacturer\u2019s name. They refer to your tyre\u2019s date of birth \u2013 or date of manufacture. The first two numbers state the week of manufacture, and the last two \u2013 the year. For example, if your tyre says 2920, your tyre was produced in Week 29 of 2020. That tells you the exact age of your tyre, ensuring that you know when, if your tyre does not require replacing due to usage, you should consider replacing your tyre due to old age \u2013 yes, tyres do age \u2013 or for how much longer your tyre warranty may be valid.<\/p>\n\n\n\n
\n Breaking it all down <\/b>
\n \n<\/b>\n<\/b><\/p>\n\n\n\n
225\/45 R17 94 S may seem like a lot of confusing numbers. But let\u2019s decipher them section by section. The first three digits, in this particular case the numbers 225, refer to the section width of the tyre across the tread. Why is the tyre section width important? Remember that the only part of your vehicle to touch the road surface is your tyres. A wider section width means a larger contact patch which means more grip. <\/b><\/p>\n\n\n\n\n
This will allow faster breaking, better cornering and when required, increased acceleration. Following on from the 225\/45 \u2013 the 45 refers to the sidewall height of the tyre, which is a percentage of the section width. This is generally known as the aspect ratio of the tyre (45% of 225). <\/p>\n
When people refer to the profile of the tyre, they are referring to the height of the tyre. Higher profile tyres are recommended for off-road driving while low profile tyres are suited for higher speed and tar road motoring.<\/p>\n
\n R is for Radial<\/b>\n<\/p>\n
The letter that follows the first set of numbers, refers to the method of construction used to produce the tyre. In this case, the R refers to Radial. Most modern tyres produced are radial tyres, replacing the former production type \u2013 cross-ply or bias construction. Radial tyres have the cords (or tyre reinforcement) run at right angles to the direction of travel or rotation of the tyre. The number that follows the R refers to the rim diameter (rim size). Should you select a tyre with a different rim diameter from the original tyres on your vehicle, you will need to replace your wheel rims.<\/p>\n
\n Embracing your need for speed<\/b>\n<\/p>\n
The speed and weight rating best suited to your selected tyre are the next numbers reflected on the sidewall. In this case, with the 94 referring to the weight and the S, quite obviously perhaps, referring to the speed. <\/p>\n
But surely that does not make sense \u2013 94 what? The 94 is a rating referring to the tyre being able to carry 670 kg. <\/p>\n
On to speed, the S shows that the tyre is capable of handling 180km per hour. A rating of H for 210km\/h, V for 240km\/h, W for 270km\/h and 300km\/h on a Y rating. Our example of 94 S means the tyre can carry 670kg travelling at a maximum speed of 180km per hour. <\/p>\n
\u2013 www.dunlop.co.za.<\/p><\/b>\n\n\n\n
<\/p>\n","protected":false},"excerpt":{"rendered":"
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