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Tire size

275/45R20 tire size: dimensions explained

Factory size on the Tesla Model X. 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 width275 mm10.83 in
Sidewall height123.8 mm4.87 in
Overall diameter755.5 mm29.74 in
Wheel diameter508.0 mm20 in
Circumference2372 mm93.4 in
Revolutions per mile678

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

Reading the marking

275 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 275/45R20 with another size →

275/45R20 tires at Tire Rack

All-season

TireLoad/speedPrice per tire
Radar Dimax AS-8
Grand Touring All-Season		XL 110W$153.13View at Tire Rack
Advanta HPZ-02
Ultra High Performance All-Season		XL 110V$162.85View at Tire Rack

Highway / touring

TireLoad/speedPrice per tire
Kumho Crugen HP71
Crossover/SUV Touring All-Season		XL 110V$202.71View at Tire Rack
Sumitomo HTR Enhance CX2
Crossover/SUV Touring All-Season		XL 110H$218.99View at Tire Rack

All-terrain

TireLoad/speedPrice per tire
Radar Renegade A/T Trail
On-Road All-Terrain		XL 110V$178.25View at Tire Rack
General Grabber AT3
Off-Road All-Terrain Truck		XL 110H$221.99View at Tire Rack

Summer performance

TireLoad/speedPrice per tire
Michelin Latitude Sport 3
Street/Sport Truck Summer Truck		XL 110V$245.51View at Tire Rack
Falken Azenis FK510 SUV
Street/Sport Truck Summer Truck		XL 110W$248.00View at Tire Rack

Winter

TireLoad/speedPrice per tire
Vredestein Wintrac Pro+
Performance Winter / Snow		XL 110V$251.09View at Tire Rack
Michelin X-Ice Snow SUV
Light Truck/SUV Studless Ice & Snow Truck		XL 110T$265.84View at Tire Rack

Showing the lowest-priced in-stock options in each category from 84 275/45R20 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