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Tire size

245/70R17 tire size: dimensions explained

Factory size on the Ford F-150, Toyota Tacoma. 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 height171.5 mm6.75 in
Overall diameter774.8 mm30.5 in
Wheel diameter431.8 mm17 in
Circumference2433 mm95.8 in
Revolutions per mile661

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, 70 is the sidewall height as a percentage of that width, R means radial construction, and 17 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 245/70R17 with another size →

245/70R17 tires at Tire Rack

All-season

TireLoad/speedPrice per tire
Goodyear Assurance WeatherReady2
Grand Touring All-Season		110T$243.99View at Tire Rack

Highway / touring

TireLoad/speedPrice per tire
Yokohama Geolandar X-CV G057N
Crossover/SUV Touring All-Season		110T$131.81View at Tire Rack
Advanta HTR-800
Highway All-Season		110T$137.91View at Tire Rack

All-terrain

TireLoad/speedPrice per tire
Goodyear Wrangler All-Terrain Adventure with Kevlar
On-Road All-Terrain		110T$117.06View at Tire Rack
Uniroyal Laredo AT
On-Road All-Terrain		110T$133.85View at Tire Rack

Winter

TireLoad/speedPrice per tire
Firestone Winterforce 2 UV
Light Truck/SUV Studdable Snow Truck		108S$168.99View at Tire Rack
Bridgestone Blizzak IcePeak
Studless Ice & Snow		XL 114T$182.99View at Tire Rack

Rugged / mud-terrain

TireLoad/speedPrice per tire
Yokohama Geolandar X-AT
Rugged All-Terrain		E 119/116S$188.63View at Tire Rack
Goodyear Wrangler DuraTrac RT
Rugged All-Terrain		XL 114T$245.99View at Tire Rack

Showing the lowest-priced in-stock options in each category from 108 245/70R17 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