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Tire size

255/75R17 tire size: dimensions explained

Factory size on the Ford Bronco. 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 width255 mm10.04 in
Sidewall height191.3 mm7.53 in
Overall diameter814.3 mm32.06 in
Wheel diameter431.8 mm17 in
Circumference2558 mm100.7 in
Revolutions per mile629

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

Reading the marking

255 is the section width in millimetres, 75 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 255/75R17 with another size →

255/75R17 tires at Tire Rack

Highway / touring

TireLoad/speedPrice per tire
Goodyear Wrangler SR-A
Highway All-Season		113S$207.21View at Tire Rack
BFGoodrich Advantage Control HT
Crossover/SUV Touring All-Season		115T$233.99View at Tire Rack

All-terrain

TireLoad/speedPrice per tire
Advanta ATX-850
Off-Road All-Terrain Truck		115T$178.68View at Tire Rack
Vredestein Pinza AT
On-Road All-Terrain		115T$199.12View at Tire Rack

Winter

TireLoad/speedPrice per tire
Firestone Winterforce LT
Light Truck/SUV Studdable Snow Truck		C 111/108R$268.99View at Tire Rack
Bridgestone Blizzak LT
Light Truck/SUV Studless Ice & Snow Truck		C 111/108R$309.99View at Tire Rack

Rugged / mud-terrain

TireLoad/speedPrice per tire
Goodyear Wrangler DuraTrac RT
Rugged All-Terrain		115T$280.99View at Tire Rack

Showing the lowest-priced in-stock options in each category from 34 255/75R17 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