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Tire size

275/45R19 tire size: dimensions explained

Factory size on the Porsche Taycan. 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 diameter730.1 mm28.74 in
Wheel diameter482.6 mm19 in
Circumference2294 mm90.3 in
Revolutions per mile702

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 19 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 275/45R19 with another size →

275/45R19 tires at Tire Rack

All-season

TireLoad/speedPrice per tire
Continental ProContact RX
Grand Touring All-Season		XL 108H$215.15View at Tire Rack
Goodyear Eagle Touring
Grand Touring All-Season		XL 108H$325.20View at Tire Rack

Highway / touring

TireLoad/speedPrice per tire
Continental 4x4 Contact
Crossover/SUV Touring All-Season		XL 108V$284.07View at Tire Rack
Michelin Latitude Tour HP
Crossover/SUV Touring All-Season		XL 108V$368.41View at Tire Rack

Summer performance

TireLoad/speedPrice per tire
Hankook Ventus S1 evo3 ev
Ultra High Performance Summer		XL 108Y$360.87View at Tire Rack
Continental PremiumContact 6
Grand Touring Summer		XL 108Y$395.95View at Tire Rack

Winter

TireLoad/speedPrice per tire
Yokohama BluEarth Winter V905
Performance Winter / Snow		XL 108V$138.51View at Tire Rack
Continental WinterContact TS 860 S
Performance Winter / Snow		XL 108V$270.98View at Tire Rack

Showing the lowest-priced in-stock options in each category from 13 275/45R19 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