- TYRES 4U SERVICES
- TYRES 4U
- TYRES 4U TIPS
P = Passenger Tyre (LT = Light Truck)- 225 = Overall width of the tyre in millimeters
- 70 = Sidewall height (distance from rim to tread) as a percentage of the thread width (known as aspect ratio)
- R = Tire construction, this one is Radial (also, B = Belted Bias, D = Diagonal Bias
- 15 = Represents the size of the wheel in inches
- In this example, the tyre has the number 89H. This is the weight capacity of the tyre. However, in most cases, you will not see this heading on the sidewall.
- A speed rating is sometimes put in front of the R (or B or D). A straight R rating means that it is rated for speeds of up to 160kph. The manufacturer does not recommended this tyre for speeds greater than 160 kph. Other speed ratings are: S=180kph, T=190kph, U=200kph, H=210kph, V=240kph, & a Z rated tyre is for speeds in excess of 240kph.
- The V and Z rated tyres have excellent dry pavement grip/traction but due to their soft rubber compounds, do not have a long life.
- A tread rating indicates how long a tyre should last. This figure is written in small letters on the sidewall of your tyre. The higher the number, the longer the tyre should last. 100 is the basic tread wear rating.
- The traction rating works just like grading - 'A' being the best, 'B' is good, and 'C' is acceptable. This number is also found on the sidewall.
- Temperature ratings work the same - 'A' best, 'B' good, 'C' acceptable. If you drive your car very hard, you want a temperature rating of 'A' because a 'C' would fail faster under these conditions. Again, look for this number on the sidewall.
