225/40-R18 vs 225/45-R18 Tire Comparison - Tire Size Calculator

225/45-R18 tires are 0.89 inches (22.5 mm) larger in diameter than 225/40-R18 tires and the speedometer difference is 3.4%

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Fullway HP108 All-Season Passenger Car High Performance Radial Tire-225/40R18 225/40ZR18 225/40/18 225/40-18 92W Load Range XL 4-Ply BSW Black Side Wall UTQG 380AA : Electronics

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