What size is a 245 60R15 tire?
R15 tires have a diameter of 26. The sidewall of the tire is 5. It’s 30mm wider, offering more contact patches and potentially improved handling. Remember, the first number indicates tire width in millimeters.
Can I install 255 tires instead of 245?
If the wheel width conforms to tire manufacturer specifications, you will then generally be able to install 255 tires rather than 245 on the same rim. Before replacing, always get advice from a tire specialist to ensure a safe fit. As you know that, the 235 tire is about 9. On the other hand, the 245 tire is 9. You can see that 245 is slightly larger than the 235 tires that can easily replace without any modifications.