185 Vs. 175 Tires (Difference And Are They Interchangeable?)

This article will talk about the differences between 185 and 175 tires. We will also discuss if you can interchange 185 tires with 175 tires. There are many tires, but we will focus on the 185 and 175 tires. 

This is because people are still confused about lots of tires. And people would ask about the difference between 185 tires and 175 tires. Tires are a part of a vehicle, and tires play a vital role in automobiles. 

Tires are also evolving. The first tire that was made was evolved, and there are many changes and improvements to making the perfect tire. So if you have the same question, this article is right for you. Let us get started. 

185 Vs. 175 Tires

What Is The Difference Between 185 And 175 Tires?

The 185 tire has a diameter of 24.65 inches, and the 175 tires have 24.03 inches. Therefore, for the width section or the thickness of the tire, they differ, and it is slightly noticeable. The 185 tire is about 7.28 inches wide, and the 175 tire is 6.89 inches wide. 

How Much Bigger Is A 185 Tire Than A 175?

If we talk about 175 and 185 in terms of the first number, the difference in size is about 10 millimeters. 

Are 185 And 175 Tires Interchangeable?

In height or the total diameter, the 185 tire and the 175 tire are a part, and they only differ for about ⅝ of an inch. The 185 has a diameter of 24.65 inches, and the 175 tire has a diameter of 24.02 inches. 

Can I Replace 175 Tires With 185?

Yes, you can replace 175 tires with 185 tires. The 185 tire is the width of the tire. Most of the rims support the 175 millimeter wide tires, and it is a more accessible handle for a 185-millimeter wide tire. 

Can I Replace 185 Tires With 175?

Yes, you can replace 185 tires with a 175 tire. This is because most of the rims support 175 millimeter wide tires, and it is a more accessible handle for a 185-millimeter wide tire. 

What Does The Number On A Tire Mean?

This means that the width of the tire can be measured in millimeters. It is measured from the sidewall into the sidewall. And so, the first three-digit number that you can see in the tire’s size refers to the tire’s width. 

There’s also the ratio of the tire’s cross-section into the width. The following two-digit number that is after the size of the tire, is known to be the aspect ratio. With that, the more significant the aspect ratio will be, the bigger the sidewall of your tire will be. 


In summary, a lot of car drivers ask about the sizes of the tires. As a car driver, you should know the basics of what the number on the tire means. 

With that, this article will serve as a guide for you. Every number on the tire size has their meanings.



Image credits – Canva

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My name is Hank, and I've been in the automotive industry for 27 years. I've been working in my own auto repair shop for the last 13 years, and now I want to help you here, on my blog. Let me know if you have any questions. Read more