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Are 315 Tires The Same As 35? [ Answered ]

As a vehicle owner, the key to optimizing the performance of your car or truck is to choose the right accessories.

When it comes to tires, some terms might seem confusing.

The last thing you would want is to get an exhilarating experience while shopping for your tires.

Well, vehicle owners often find themselves caught between the terms 35” tires and 315 wide tires.

So, what do these measurements mean for your tires?

Once you get to know them, you will be making an informed decision while shopping for these accessories.

In this article, you will get to know whether these two tires are the same or not.

We have discussed how the sizing of tires works when you consider imperial sizing and metrics.

Are 315 tires the same as 35?

Yes, a 315 wide tire is typically the same as a 35” tire.

The manufacturers and sellers simply use two different ways to describe the tires.

When you find a 315 wide tire, it is the measurement in millimeters for the width of the tread.

On the other hand, a 35-inch tire indicates the product of the aspect ratio and the width of the tire.

On the tire’s sidewall, you would find the tire size brand.

Here, a lot of information is available from the series of information.

When you closely examine the sidewall of a 35-inch tire, you would most probably find this information: P315/70/17.

So, there’s no mention that it’s a 35-inch tire when you check the code.

However, this happens to be the widely accepted metric standard for tires.

Metric sizing means the metric system consisting of terms like millimeters, centimeters, meters, etc.

This is different from the standard system of measurement, which includes feet and inches.

When you closely look at a 35-inch tire, 315 denotes the width of the treads of the tires in millimeters.

Also, the diameter of the tire is 35 inches. Therefore, there’s no relation between these two numbers, although they imply the same tire.

What are the differences between 315 Vs 35 tires?

You won’t come across too many differences between 315 and 35 tires.

While the former has a D-rating, the latter has an E-rating.

Essentially, they are the same tire. The two numbers simply denote two different aspects of these tires.

Imperial vs metric millimeters

When you consider different tire sizes, it becomes easy to understand the difference between imperial and metric millimeters since one can get specific.

Currently, the automobile market presents you with a wide plethora of tire sizes.

It pays to be aware of the differences, so that you can choose the right one for your vehicle.

Typically, the standard or imperial system uses inches in measurement, while the metric system uses millimeters.

The difference we are discussing is that simple!

When you consider the norms of the tire manufacturers, there’s no particular norm to follow.

Each manufacturer makes this decision individually due to the absence of an established trend in the industry.

Therefore, when you read ‘315/70/17’, it denotes the 35-inch tires.

However, the physical diameter of these tires can differ when you consider different manufacturers.

If two different brands manufacture 35-inch tires, you might notice some variation in the respective tire diameters.

So, you might find some 35” tires measuring 34.5 inches. On the other hand, some tires can measure a bit larger.

It all depends on the construction that the respective manufacturer carries out.

This implies that the actual diameter of the tires might vary even when the metric size tells that they are the same.

Also, there might be some differences in tread depth, ply ratings, pattern, construction, load rating, and weight.

In case you want to know the exact diameter of the tire, you can visit the official website of the manufacturer.

Once you look at the particular tire’s specifications, you would get an accurate measurement.


Whether you are purchasing the tire for your car or truck, you would like to go for the right tires.

From the discussion, it is clear that there’s no such difference between 35-inch tires and 315 tires.

Now that you know that both of them are the same, you can comfortably proceed with your purchase decision.