Tire Size 275/65r18 vs 265/65r18

275/65r18 vs 265/65r18

The main difference between tire sizes 265/65r18 and 275/65r18 lies in the section width. Specifically, the 275/65r18 is 3.8% wider than the 265/65r18, measuring 10.83 inches across versus 10.43 inches.

This slightly broader tread results in a larger contact patch and more overall tire volume. However, the overall diameter increase is minor at just 1.6%, ensuring comparable sizes.

Fitment Guide

The 275/65r18 is only 3.8% wider and 1.6% taller in overall diameter than the 265/65r18. This is well within the 3% sizing difference limit for direct replacement without adjustments. Either tire can directly substitute the other without fitment issues.

Ground Clearance

With a 1.6% larger diameter, the 275/65r18 provides 0.51 inches (13mm) extra ground clearance over the 265/65r18.

This modest clearance gain gives a slight advantage in driving over obstacles, gravel, or uneven terrain by reducing underbody scrapes. However, the larger 275 size also causes a 1.6% lower speedometer reading.

Gas Mileage

Thanks to a smaller contact patch and lighter weight, the 265/65r18 confers better fuel efficiency than the 275/65r18.

Reduced rolling resistance and rotational mass improve gas mileage, an important consideration for daily drivers.

Ride Comfort

The 275/65r18’s taller sidewall cushioning absorbs impacts better than the 265/65r18, providing a smoother ride over harsh bumps and uneven pavement.

This explains its popularity for trucks and SUVs regularly driving on unpaved roads. On smooth highways, though, the 265/65r18 gives a more responsive, agile feel.


Visually, the difference between these sizes is subtle. The 275/65r18’s taller sidewall has a slightly “stretched” look compared to the shorter 265/65r18. This taller profile aesthetically suits trucks and SUVs well.

Handling & Stability

The 265/65r18’s shorter sidewall enables crisper steering response and handling agility on pavement versus the taller 275/65r18. But both deliver responsive, stable handling for normal driving conditions.

Noise & Vibration

Expect slightly more road noise and vibration from the 265/65r18 as its stiff sidewall transmits more harshness into the cabin.

The 275/65r18 better dampens noise thanks to more sidewall flex. Either tire provides a comfortable, quiet enough ride however.

Durability & Wear

The 265/65r18 wears more evenly with a smaller contact patch and exhibits longer tread life than the larger 275/65r18. But durability differences are minor between these very comparable sizes.

Adverse Conditions

Performance in rain, snow, and off-road is very similar between the two. The 275/65r18’s extra ground clearance is a slight advantage off-road, while the 265/65r18’s shorter sidewall aids responsiveness on slippery roads. Both handle adverse conditions very capably.

Speedometer Difference

The speedometer reading is slightly higher with 275/65r18 tires than 265/65r18 tires. At an actual vehicle speed of 20 mph, the speedometer reads 20 mph for 275/65r18 tires.

For 265/65r18 tires, the speedometer reading is 19.68 mph at the same actual speed. The difference in speedometer reading between these two tire sizes is 0.32 mph.

Will 275/65r18 Fit 265/65r18?

Yes, the 275/65r18 tire is compatible with the 265/65r18, as the diameter difference is only 1.6%, well within the recommended 3% limit.

Ensure the load capacity of the new tire meets or exceeds that of the original for optimal performance and safety.

How Much Taller Is A 275/65r18 Tire Than 265/65r18?

A 275/65r18 tire is 0.51 inches (13 mm) taller than a 265/65r18 tire, representing a 1.6% increase in diameter. The specific height of a 275/65r18 tire is 32.07 inches (814.7 mm), while a 265/65r18 tire stands at 31.56 inches (801.7 mm) tall.

How Much Wider Is A 275/65r18 Tire Than A 265/65r18?

A 275/65r18 tire is 0.39 inches (10 mm) wider than a 265/65r18 tire, representing a 3.6% increase in width. The specific width of a 275/65r18 tire is 10.83 inches (275 mm), while a 265/65r18 tire measures 10.43 inches (265 mm) wide.

What Does 275/65r18 Mean?

The tire size 275/65r18 denotes a tire with a width of 275 millimeters, an aspect ratio of 65 (indicating the sidewall height is 65% of the width), and an 18-inch rim diameter.

This specification provides essential information for selecting compatible replacement tires for a vehicle. In terms of measurement, the tire size of 275/65R18 is equivalent to 32.1×10.8R18 in inches.

What Does 265/65r18 Mean?

The tire size 265/65r18 specifies a tire with a width of 265 millimeters, an aspect ratio of 65 (indicating the sidewall height is 65% of the width), and an 18-inch rim diameter.

This numerical code provides essential information for selecting compatible tires for a vehicle. The measurement of a tire marked as 265/65R18 is equivalent to 31.5×10.4R18 in inches.

Our Observation
After comparing these two great tire options, I’m leaning toward recommending the 265/65R18 for most drivers. Its crisper handling, improved fuel economy, and potentially longer tread life are advantages I find appealing for daily commuting and highway driving.

While the 275/65R18 provides more cushioning and ground clearance, those benefits do not outweigh the 265’s strengths for typical on-road use.

However, I can undoubtedly see drivers preferring the more rugged personality and looks of the 275 for larger trucks and SUVs that frequently go off-road.

In the end, I’d suggest the 265/65R18 for sedans and crossovers, while trucks and SUVs may benefit more from the 275’s capabilities. Both are great, but the 265 gets my personal nod for best overall tire.

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