How Wide Is A 305 Tire? (Key Benefits And Drawbacks)

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Wider tires are considered safe tires, especially for heavy-duty vehicles. 305 tires are widely used on commercial vehicles, but it is essential to know the exact width of a tire for consistent performance. How wide is a 305 tire?

A 305 tire is one that is 12 inches or 35mm wider. Its diameter is around 33.2 inches, and you will need a 16-17-inch rim diameter for optimum performance. It has many potential benefits that make it perfect for heavy vehicles; however, it has a few drawbacks that may restrict you from using it.

Continue reading to decide whether to install 305 tires on your car. I will share helpful information to help you make an informed decision.

How Wide is a 305 Tire?

The width of a tire is the distance between the inside and outside sidewalls. The distance is often defined in millimeters in the automobile industry. The 305 tire means its size is 305 mm. But if you define it in inches, it is around 12 inches.

Are 305 Tires The Same As 35 Inches Tires?

You may hear that there is not much difference between a 305 and 35” tire. But it is not; there is a big difference because a bit of measurement change can affect your vehicle’s performance.

Some people do not pay attention and use tires without considering their accurate specifications. Ultimately, they experience the worst driving.

When comparing a 305 tire to a 35” tire, there is a big difference in size. The diameter of a 35” tire is 35 inches, while the diameter of a 305 tire is around 33.2 inches. The 305 tire is smaller than the 35 inches tire.

Are 305 Tires The Same As 33”?

No, they are not the same; most people do not know about the tire’s measurement system, which makes their experience worse. There is a slight difference of a few inches in diameter between 33” and 305 tires. 

305 tires are 33.2 inches, which is slightly different, but compared to other specifications, there are many differences.

Here is the list of differences.

  • 33 inches tire is 285 mm while 305 is 305 mm
  • The weight of 305 tires is typically 60 to 70 pounds, whereas the weight of 33″ tires is typically 55 to 58 pounds.
  • The section width of the 305 tire is 12 inches, but the 33” tire has a width of 12.5 inches
  • The height of 305 is 33.2 inches, while the other is 33 inches
  • The recommended rim diameter is 16-17 inches for 305, but for 33”, it is 15-20 inches

What Rim Size is Needed for a 305 Tire?

A perfect size rim offers better fitting for the tire. When choosing the rim size for a 305, you can choose from 10.5” to 11.5”. You risk experiencing inconsistent performance if you mount 305 tires on rims that are not in accordance with the suggested measurements.

What Are The Benefits of Wide 305 Tires?

305 tires are considered wider tires with plenty of benefits for putting them on big or commercial vehicles.

Enhanced Traction

305 tires come with excellent patch specifications that provide better contact to the road.

In the end, it increases friction, which aids in improving the amount of traction on the road. You may experience less slippage on the road when installing the 305 tires.

Improve Braking Performance

The braking system works better on wider tires than on narrower ones. It responds to your brakes more quickly than with narrower tires because of the increased friction. Its larger patches ensure better braking, even on slippery surfaces.

Higher Lateral Grip

The 305 tires guarantee greater lateral grip, which enhances their responsiveness to acceleration.

If you continue the acceleration for a longer time on a smoother road, with every move, they give more push and ensure faster speed compared to narrower tires.

Increased Load Capacity

305 tires are durable and made of high-quality materials to support heavy-duty tasks. So, their excellent quality lets them withstand heavy weights compared to narrower tires.

Due to heavy load capacity, they are recommended for heavy-duty vehicles such as pickup trucks and SUVs.

What Are The Drawbacks of 305 Tires?

Undoubtedly, there are multiple benefits to using 305 tires on your vehicle. However, they also have drawbacks that you should consider before putting 305 tires on your vehicle.

Lowers Fuel Economy

Wider tires like 305 have a larger contact patch with the road, so their rolling resistance is higher than the narrower tires.

Due to this increased friction, the engine works harder, ultimately reducing fuel economy. The engine needs more power to move against friction, and more fuel is consumed to generate high power.

Risk of Hydroplaning

The 305 tires are considered safer on wet surfaces. However, there is a risk of hydroplaning. The wider patches of 305 tires may allow the water to enter between the patches, and tires may fail to maintain traction. 

It may make it hard to stop the vehicles, especially when riding at higher speeds. So, always consider this factor for safety and avoid high speeds on wet surfaces.

Low Traction on Snow

Wider tires ensure excellent grip on damp or dry surfaces but may lose traction when moving on snow.

They have a larger footprint, so the pressure may disperse when applied. Wider tires frequently do not penetrate the snow, which may reduce traction.

Less Comfort Ride

The comfort of wider tires is inferior to that of narrower ones. They are more susceptible to road imperfections due to their heavy material and larger patches. 

Additionally, they make noise, which could make your ride less comfortable. You may often experience bumps while driving with 305 tires.


Can I change my existing tires to 305 sizes without modifications?

Never change your existing tires to 305 tires until you make some modifications. First, consider the specifications required for a 305 tire and compare them with your available tire. You may need to replace the rim and make adjustments to the alignment when you need to replace your tires with 305 tires.

Are 305 tires typically used for off-road applications?

They are not only recommended for off-road applications. 305 tires perform exceptionally well over dry or damp surfaces. However, due to their excellent traction, they are also recommended for off-road driving. But their uses are versatile and can be used on different terrains, on or off-road.

Do 305 tires perform well in wet or snowy conditions?

It can perform well in wet or snowy conditions. 305 tires’ excellent traction may ensure a good grip when traveling on wet or snowy surfaces. However, if snow is too hard or water enters between the larger patches, it may cause low traction. Overall, 305 tires offer satisfactory performance on wet or snowy surfaces.

On which vehicles can I use 305 tires?

You can use 305 tires on multiple vehicles. They are wider tires recommended for heavy-duty vehicles such as SUVs, trucks, and commercial vehicles. Here is a list of some popular brands that use 305 tires.


Final Words

305 tires have a width of 305 millimeters or around 12 inches. Its diameter is 33.2 inches. You will need a rim size between 10.5 and 11.5 inches for a perfect fit.

You will need to make some rim size and alignment system adjustments if you want to replace your current tires with 305 tires.

The 305 tire has many benefits, such as good traction, stability, and better grip. However, it may increase fuel costs and be risky on wet or snowy surfaces.

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