Tire 1 / R 195 55 R 16 Tire 2 / R 195 65 R 15 Inch Mill KPH MPH Odometer Reading If you replace 320/60/18 with 235/60/18 for Odometer reading 1000 the actual distance traveled = 879 ~ ( -12.1 %) (If your Odometer is accurate for original tires) Edit and Copy Tire diagram above to compare or print. Speedo Difference between Wheels 12.1% 185/50 r16 +1% 195/40 r16 -3.9% 195/45 r16 -0.5% 195/50 r16 +2.7% 205/45 r16 +1% 215/40 r16 -1.2% 215/45 r16 +2.6% 225/40 r16 +0.2% Tire size comparison in inches 185/55 R15 vs 195/55 R15 Calculate CM INCHES If your speedometer reads: Real speed is: Size difference between 185/55 R15 and 195/55 R15 tires. In the tire comparison table above, you can see a detailed calculation of the size difference between 185/55 R15 and 195/55 R15 tire. To give a rough idea, a 195/50 will spin 29 more times than a 195/55 over the course of a mile. A 195/50 is about 1 pound lighter than a 195/55, and that is 1 pound lighter than a 205/50, on average. I feel the extra grip of a 205/50 gains more than the 1 less pound of unsprung weight of the 195/55, in both accelleration and cornering. .

difference between 195 50 r15 and 195 55 r15