275/45R20 vs 265/50R20

275/45R20 vs 265/50R20: Comparision Size Chart


275/45R20 (Tire 1)265/50R20 (Tire 2)Difference
Tire Size In Inches29.8X10.8R2030.4X10.4R20
Diameter29.74"755.5 mm30.43"773 mm2.32%
Tread Width10.8275 mm10.4"265 mm-3.64%
Rim Diameter20"508 mm20"508 mm0%
Sidewall Height4.87"123.75 mm5.22"132.5 mm7.07%
Circumference93.43"2373.47 mm95.6"2373.47 mm2.32%
Revs/Mile678.15 Revs/Mile662.76 Revs/Mile-15.39
Revs/Kilometer421.38 Revs/Mile411.82 Revs/Mile-9.56
Tire 1 Front View
10.8"
29.74"
Tire 2 Front View
10.8"
30.43"
Tire 1 Side View
Tire 1 Wheel
Circumference 1
93.43"
20"
4.87"
678.15 Revs/Mile
Tire 2 Side View
Tire 2 Wheel
Circumference 2
95.6"
20"
5.22"
662.76 Revs/Mile

Speedometer Error

275/45R20 (Mph)265/50R20 (Mph)
2020.46
3535.81
5051.16
6566.51
8081.86
9092.09
100102.32

265/50R20 vs 275/45R20: Gas Mileage & Performance Comparison

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

275/45R20265/50R20
Wet/Snowy RoadsBetter TractionReduced Traction
Rough TerrainReduced StabilitySmoother Ride
Handling/SteeringBetterLess Responsive
Gas MileageGoodBetter
Road NoiseQuietQuieter
CostLess ExpensiveMore Expensive

Can You Replace The 275/45R20 With The 265/50R20?

Yes, both tires have the same rim diameter, and the 265/50R20 has a bigger overall diameter than the 275/45R20 which is only 2.26% (0.69-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 275/45R20 tire will only fit on a 20″ 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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