265/70R18 vs 275/65R18

265/70R18 vs 275/65R18: Comparision Size Chart


265/70R18 (Tire 1)275/65R18 (Tire 2)Difference
Tire Size In Inches32.6X10.4R1832.1X10.8R18
Diameter32.61"828.2 mm32.07"814.7 mm-1.63%
Tread Width10.4265 mm10.8"275 mm3.77%
Rim Diameter18"457.2 mm18"457.2 mm0%
Sidewall Height7.3"185.5 mm7.04"178.75 mm-3.64%
Circumference102.45"2601.87 mm100.75"2601.87 mm-1.63%
Revs/Mile618.45 Revs/Mile628.88 Revs/Mile+10.43
Revs/Kilometer384.29 Revs/Mile390.77 Revs/Mile+6.48
Tire 1 Front View
10.4"
32.61"
Tire 2 Front View
10.4"
32.07"
Tire 1 Side View
Tire 1 Wheel
Circumference 1
102.45"
18"
7.3"
618.45 Revs/Mile
Tire 2 Side View
Tire 2 Wheel
Circumference 2
100.75"
18"
7.04"
628.88 Revs/Mile

Speedometer Error

265/70R18 (Mph)275/65R18 (Mph)
2019.67
3534.43
5049.19
6563.94
8078.7
9088.53
10098.37

275/65R18 vs 265/70R18: Gas Mileage & Performance Comparison

* Below is a comparison table. Assuming 2 tires of the same manufacturer, material and tested on the same road conditions.

265/70R18275/65R18
Wet/Snowy RoadsReduced TractionBetter Traction
Rough TerrainSmoother RideReduced Stability
Handling/SteeringLess ResponsiveBetter
Gas MileageBetterGood
Road NoiseQuieterQuiet
CostMore ExpensiveLess Expensive

Can You Replace The 265/70R18 With The 275/65R18?

Yes, both tires have the same rim diameter, and the 275/65R18 has a smaller overall diameter than the 265/70R18 which is only 1.66% (0.54-inch), it is the allowable margin (±3%).

When you want to replace a different tire size, as a rule, for the rim diameter, you will need to be sure that your tires and rims are an exact match, e.g. a 265/70R18 tire will only fit on a 18″ diameter rim.

You Can check our tools and charts below to find your size:

*Disclaimer: The information provided on the tire size is for general informational purposes only. We recommend that you consult a certified tire specialist or National Highway Traffic Safety Administration (NHTSA) sets specific guidelines for tires used on vehicles.


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Jamie Hicks

Sullivan Kane

Tire Technician at TireSizesCalculator

Sullivan is a Tire Technician specializing in tire repair at TireSizesCalculator. With over 6 years of experience in the industry, Sullivan has become an expert in tire repair, maintenance & installation.


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