Thread Starter
#1
Meaning of Tyre Readings
- Thread Starter vroom
- Start date
175/70 - Means width 175mm.
70 represents the ratio of height to width; i.e. tyre's height is 70% of its width
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70 represents the ratio of height to width; i.e. tyre's height is 70% of its width
More details
Ok for explanation lets take the last one " 175/R14 70 "
1) The first number "175" is the tiers Width in mm
2) "R" stands for radial construction & 14 is the diameter of the tier.
3) The last number "70" refers to height of sidewalls.Like its 70% of the section width"175".
& the R is always mentioned later. I mean its always in this way "175/70R14.![[:)]](https://www.theautomotiveindia.com/forums/images/smilies/Smile.gif "Smile [:)]")
1) The first number "175" is the tiers Width in mm
2) "R" stands for radial construction & 14 is the diameter of the tier.
3) The last number "70" refers to height of sidewalls.Like its 70% of the section width"175".
& the R is always mentioned later. I mean its always in this way "175/70R14.
Last edited:
Thread Starter
#4
Yes it is in Inches.
Yup, in inches.
Ok for explanation lets take the last one " 175/R14 70 "
1) The first number "175" is the tiers Width in mm
2) "R" stands for radial construction & 14 is the diameter of the tier.
3) The last number "70" refers to height of sidewalls.Like its 70% of the section width"175".
& the R is always mentioned later. I mean its always in this way "175/70R14.
1) The first number "175" is the tiers Width in mm
2) "R" stands for radial construction & 14 is the diameter of the tier.
3) The last number "70" refers to height of sidewalls.Like its 70% of the section width"175".
& the R is always mentioned later. I mean its always in this way "175/70R14.
14 indicates the diameter of the rim and not the tyre.
Correction though we are going Off topic
The complete tyre reading is as - 175/70R14 84T
Here 84 is "Load Index" This is a number corresponds to the maximum load in kilograms that a tyre can support when properly inflated.
And T is "Speed Rating" This is a number that corresponds to the maximum service speed for a tyre. T means - 190KMPH. See chart below -
Here 84 is "Load Index" This is a number corresponds to the maximum load in kilograms that a tyre can support when properly inflated.
And T is "Speed Rating" This is a number that corresponds to the maximum service speed for a tyre. T means - 190KMPH. See chart below -
Very Informative post RSM
Most queries are answered. I am going to post a very important info so that you members are not sold old tires. You should understand that tires do have expiry date as they are made of organic material.
Yes even i was assuming its month/year of manufacturing.
And what AKH denotes?
And what AKH denotes?
its just their company specific code. It manufacturing week and year and not expiry date as some of you are assuming.
PS: in above attachment its 3rd week of year 2005. Hence the tyre is made in mid Jan of 2005
PS: in above attachment its 3rd week of year 2005. Hence the tyre is made in mid Jan of 2005
Tyres do have an expiry date as it will break down after some years and there will be cracks in the tyre after it has passed its prime. It might blow out or fail if it has been on the shelf for some years and you have bought and put it on your car.
Well,if we go with the above fact then all of my cars are having the expired tyres.![[lol]](https://www.theautomotiveindia.com/forums/images/smilies/Laugh.gif "Laugh [lol]")