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Baleno Zeta has the tyre size 195/55 R16. But the spare tyre has the size 185/65 R15. How does it match. What are the meaning of the numbers indicated in tyre size.

Published On : 2016-10-12 20:57:18.0 Riju
Answers for this Question

The spare tyre is often of a smaller size to save costs. It's the same reason why not all spare tyres come with alloy wheels. This tyre can be used  to get moving again in the event of a puncture, but it is best to repair the full sized tyre, replace it and then use it as soon as possible. 

What's On Your Tire's Sidewall?

With a little explanation it's easy to understand what all of the letters and numbers mean on your tire's sidewall. The numbers are indicators of the size, type, and performance of the tire.

Tire Type: The letter "P" at the beginning of the "Tire Size" tells us the tire is a P-Metric tire, referring to tires made to certain standards within the United States, intended for Passenger vehicles.

If a tire size has no letters at the beginning, this indicates a Euro metric tire. P-Metric and Euro-Metric tires may have different load capacities.

The letters "LT," either at the beginning or at the end of the tire size indicate the tire was designed for light trucks. Vehicle manufacturers equip some light trucks with "LT" type tires. These tires generally require higher inflation pressures than passenger tires.

Consult your owner's manual or tire placard for the recommended tire size and inflation pressure for your vehicle.

Tire Width is the width of the tire measured in millimeters from sidewall to sidewall. The first three-digit number in the tire size refers to the tire width. For instance, in a size P215/65 R15 tire, the width is 215 millimeters.

Aspect Ratio is the ratio of the height of the tire's cross-section to its width. The two-digit number after the slash mark in a tire size is the aspect ratio. For example, in a size P215/65 R15 tire, the 65 means that the height is equal to 65% of the tire's width. The bigger the aspect ratio, the bigger the tire's sidewall will be.

Construction: The letter "R" in a tire size stands for Radial, which means the layers run radially across the tire.

Wheel Diameter is the size of the wheel measured from one end to the other. It tells us the size of the wheel that the tire is intended to fit. A size P215/65 R15 tire is made for a wheel with a 15" diameter.

Rest, you may also go through on our article "How to read a Tyre". It might also help you.

CarDekho Helpdesk on 2016-10-13 11:27:46.0
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