Getfree shipping on all orders over $50*. Tire Rack Pledge. Purchase with confidence. We’ve got you covered. Explore More About Why Tire Rack; full tread depth 225/40R18 tires mounted on 18x8.0 wheels. Read the Full Test Report. Ratings Charts & Reviews Bridgestone WeatherPeak. 224 Survey Ratings

21555-R17 tires are 0.15 inches (3.9 mm) smaller in diameter than 215/50-R18 tires and the speedometer difference is 0.6%.

22555-R17 tires are 0.1 inches (2.5 mm) larger in diameter than 245/50-R17 tires and the speedometer difference is 0.3%.

22555-R17 tires are 0.49 inches (12.5 mm) larger in diameter than 235/50-R17 tires and the speedometer difference is 1.8%.

21565-R16 tires are 0.26 inches (6.6 mm) larger in diameter than 225/55-R17 tires and the speedometer difference is 0.9%.

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225 50 r17 vs 225 55r17