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Tire size

265/45R20 tire size: dimensions explained

Factory size on the Tesla Model X, Porsche Macan (gas, 95B). Below are the dimensions calculated from the size marking itself. Your vehicle's correct size, load index and speed rating are on the placard in the driver's door jamb; check it before buying.

MeasurementMetricImperial
Section width265 mm10.43 in
Sidewall height119.3 mm4.69 in
Overall diameter746.5 mm29.39 in
Wheel diameter508.0 mm20 in
Circumference2344 mm92.3 in
Revolutions per mile686

Calculated values: diameter = wheel + 2 × (width × aspect ratio). Real tires vary slightly by brand and model.

Reading the marking

265 is the section width in millimetres, 45 is the sidewall height as a percentage of that width, R means radial construction, and 20 is the wheel diameter in inches. A passenger (P or Euro-metric) tire and an LT tire in the same size are not interchangeable without checking load requirements.

Compare 265/45R20 with another size →

265/45R20 tires at Tire Rack

All-season

TireLoad/speedPrice per tire
Radar Dimax AS-8
Grand Touring All-Season		XL 108W$130.47View at Tire Rack
Radar All Season GT
Grand Touring All-Season		XL 108W$136.21View at Tire Rack

Highway / touring

TireLoad/speedPrice per tire
Kumho Crugen HP71
Crossover/SUV Touring All-Season		XL 108W$198.63View at Tire Rack
Kumho Crugen GT Pro
Crossover/SUV Touring All-Season		XL 108V$235.97View at Tire Rack

All-terrain

TireLoad/speedPrice per tire
Falken WildPeak A/T Trail
On-Road All-Terrain		XL 108V$235.00View at Tire Rack
Nitto Nomad Grappler
On-Road All-Terrain		XL 108H$243.00View at Tire Rack

Summer performance

TireLoad/speedPrice per tire
Bridgestone Dueler H/P Sport RFT
Street/Sport Truck Summer Truck		104Y$249.58View at Tire Rack
Falken Azenis FK510 SUV
Street/Sport Truck Summer Truck		XL 108Y$289.00View at Tire Rack

Winter

TireLoad/speedPrice per tire
Pirelli Scorpion Winter
Light Truck/SUV Performance Snow Truck		XL 108V$175.20View at Tire Rack
Vredestein Wintrac Pro
Performance Winter / Snow		XL 108V$181.31View at Tire Rack

Showing the lowest-priced in-stock options in each category from 76 265/45R20 tires in Tire Rack's feed, sorted by price only. We don't rank by commission. Match or exceed the load index and speed rating on your placard.

Affiliate links: if you buy through a Tire Rack link, RightTread may earn a commission through CJ. It doesn't change your price. Prices are Tire Rack's per-tire prices from Tire Rack's product feed as of Nov 7, 2026, 9:19 PM PT. Prices change, so confirm on Tire Rack before you buy. Disclosure

Other sizes