185/65-R14 tires are 0.93 inches (23.5 mm) smaller in diameter than 165/80-R14 tires and the speedometer difference is 3.8%.
185/55-R14 tires are 0.26 inches (6.5 mm) smaller in diameter than 175/60-R14 tires and the speedometer difference is 1.2%

185/65-R14 tires are 0.37 inches (9.5 mm) larger in diameter than 165/70-R14 tires and the speedometer difference is 1.6%

185/65-R15 tires are 0.56 inches (14.1 mm) smaller in diameter than 175/80-R14 tires and the speedometer difference is 2.2%
Feb 8, 2018 ยท 185/65 R14 86T F: C: 69 165/70 R14 85T XL (175/65 R14) on mostly country roads for 18,000 average miles These tyres are far better than "standard" tyres when it

185/65-R15 tires are 1.24 inches (31.6 mm) smaller in diameter than 175/85-R14 tires and the speedometer difference is 4.8%

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  • 175 65 r14 vs 185 65 r14