245 vs 255 Tires

 

The main difference between a 245 tire and a 255 tire is the tread width, with the 255 tire being 10mm (or about 0.4 inches) wider than the 245 tire. This slightly wider tread provides more grip and stability, especially in adverse conditions, but the difference is quite minor.

245 vs 255 Tires

This comparison table allows you to easily identify differences between two tire sizes.

Tire Size 245 Tire Size 255
Narrower Main Tread Width Slightly Wider Main Tread
Marginally Better Fuel Efficiency Slightly Lower Fuel Efficiency
More Responsive Handling More Stable Handling
Quieter Ride on Smooth Roads Slightly Smoother Ride Quality
Slightly Less Tread Durability Slightly More Durable Treadwear
Minimal Visual Difference Slightly More Muscular Look
Lower Rolling Resistance Slightly Higher Rolling Resistance
Less Traction in Adverse Conditions Improved Traction in Adverse Conditions
Minimally Less Ground Clearance Slightly More Ground Clearance

Ground Clearance

The slightly greater width of a 255 tire will provide a slight increase in ground clearance compared to a 245.

This can help prevent bottoming out over bumps or obstacles. However, we’re only talking about a few millimeters of extra clearance, so the advantage is marginal.

Gas Mileage

With regards to gas mileage, a 245 may have a minor advantage over a 255 due to its smaller contact patch, resulting in slightly less rolling resistance.

But modern tire compounds minimize this difference so that any potential mileage benefit would be barely noticeable in real-world conditions.

Ride Comfort

Larger tires can provide a smoother ride, but with only a 10mm width difference between 245s and 255s, the impact on comfort is negligible.

Both offer adequate absorption of bumps and vibrations for a comfortable ride. Ride quality depends much more on tire construction and inflation than this slight size difference.

Aesthetics Look

The slightly wider 255 may look a bit more muscular on certain vehicles. Still, the difference is so subtle that it likely won’t factor into the aesthetic appeal.

Most people would be hard-pressed to visually tell the difference between a 245 and a 255 tire on a given car.

Handling & Stability

The 255 offers a small enhancement in stability and traction from its wider footprint. But a 245’s slightly smaller contact patch significantly improves responsive steering and handling. For most drivers, any handling difference between the two would be imperceptible.

Noise & Vibration

With proper inflation and tread depth, noise and vibration levels should be similar between the two sizes. The 255 may dampen vibrations slightly better, but mounting, tire construction, tread pattern, and road surface play a much bigger role in noise and vibration characteristics.

Durability & Wear

The 10mm wider 255 distributes wear over a slightly larger footprint, potentially increasing tread life.

But modern tires exhibit similar durability between these two popular sizes. Rotation during maintenance, alignment, and inflation have a much greater impact on tire life.

Adverse Conditions

The 255’s modestly wider tread helps supply more snow, mud, or gravel grip. However, modern tread compounds enable both sizes to perform well in adverse conditions.

The difference will be hard to discern for most drivers except in specialized off-road applications.

Are 245 And 255 Tires Interchangeable?

Yes, 245 and 255 tires are interchangeable. While the recommended rim width range for a 255 tire is typically 7.0 to 9.5 inches, it overlaps with the range of 7 to 8.5 inches for a 245 tire. This means that you can mount a 255 tire on a rim that’s within the 245 tire’s range without any issues.

However, it’s important to note that mounting a narrower tire on a wider rim may cause handling problems due to increased sidewall flexing, so be sure to check your car’s specifications before making any changes.

Our Observation
After comparing the nuances between 245 and 255 tires, I don’t see any major differences that would sway my personal choice one way or the other. The slightly wider 255 provides only negligible advantages in off-road capability, aesthetics, and adverse weather handling.

For daily driving needs, either size will provide a similar experience in terms of ride comfort, noise, vibrations, and longevity. Unless I was an avid off-roader needing maximum traction and stability.

The 255’s modest benefits over the 245 would not justify choosing it purely for performance reasons. Ultimately, either size could fit my driving needs equally well.

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