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Tire size

245/45R19 tire size: dimensions explained

Factory size on the Lucid Air. 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 width245 mm9.65 in
Sidewall height110.3 mm4.34 in
Overall diameter703.1 mm27.68 in
Wheel diameter482.6 mm19 in
Circumference2210 mm87 in
Revolutions per mile729

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

Reading the marking

245 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 245/45R19 with another size →

245/45R19 tires at Tire Rack

All-season

TireLoad/speedPrice per tire
Radar Dimax AS-8
Grand Touring All-Season		XL 102W$134.77View at Tire Rack
Advanta ER-800
Standard Touring All-Season		XL 102H$136.35View at Tire Rack

Highway / touring

TireLoad/speedPrice per tire
Kumho Crugen HP71
Crossover/SUV Touring All-Season		98H$215.01View at Tire Rack
Kumho Crugen GT Pro
Crossover/SUV Touring All-Season		98V$231.44View at Tire Rack

All-terrain

TireLoad/speedPrice per tire
Falken WildPeak A/T Trail
On-Road All-Terrain		XL 102V$230.00View at Tire Rack
Pirelli Scorpion All Terrain Plus
Off-Road All-Terrain Truck		XL 102V$461.27View at Tire Rack

Summer performance

TireLoad/speedPrice per tire
Nexen N FERA SU1
Ultra High Performance Summer		XL 102Y$119.99View at Tire Rack
Firestone Firehawk Indy 500
Ultra High Performance Summer		98W$142.66View at Tire Rack

Winter

TireLoad/speedPrice per tire
Michelin X-Ice Snow
Studless Ice & Snow		XL 102H$191.57View at Tire Rack
Vredestein Wintrac Pro+
Performance Winter / Snow		XL 102W$224.18View at Tire Rack

Showing the lowest-priced in-stock options in each category from 123 245/45R19 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, 10:23 PM PT. Prices change, so confirm on Tire Rack before you buy. Disclosure

Other sizes