# Can I upsize my bike tires?

## Can I upsize my bike tires?

If the sum of the stock tyres is equal to the sum of up-size tyres, the tyres should fit without any hassles in most cases. Example: if the stock tyres are 120/80-17 and you wish to upsize to 130/70-17, the sum of both the tyre sizes land at 200, which is acceptable.

What is P in bike tyre size?

Speed Symbol
P is the Speed Symbol and it indicates at which speed this tyre can be safely operated. Please refer Speed Symbol table.

### Can I use 205 tires instead of 195?

If it’s a 6″ rim then 195 is bang on, 205 would be on the maximum. If it’s a 6.5″ rim then 195 or 205 will both be fine. If it’s a 7″ rim then 195 would be on the minimum and 205 would be bang on. It will absolutely fine right up until you have an accident and then…

How do I find out my tyre size?

To calculate the total diameter of the tyre, add the diameter of the wheel rim to the size of the sidewall. Here’s how you do it. Read the marking on the side of the tyre. For example, it might read 175/70/R13.

#### How do I know my tyre size?

The size of a tyre is printed onto the side of the tyre – on the area known as the sidewall. When looking for the size, you will see that it is made up of a series of numbers and letters. 55 – Height of the tyre sidewall as a percentage of the width.

How do I know my bike tyre size?

Check your tire’s sidewall—the numbers there indicate your tire size (roughly its outer diameter and its width, but not always in that order). Typical road bike tire: 700 x 32c indicates a tire that has an outer diameter of 700mm and a width of 32mm.

## Can I change my tyre width?

As long as you match the exact same car tyre type across the axles you can employ those with a higher speed rating. You might consider doing this if, for instance, you intend to drive your car on a racetrack. You can also change your tyre size if you ever need to transport heavier loads.