QUOTE(ksc_3688 @ Sep 22 2011, 09:39 AM)
mine is 195 bro. not 185.
i feel the fuel consumption is better now compared to earlier. i am using continental tyres, CC5. the stock tyres were silverstone.
By saying wrong tyre size, this is what I mean:
Try this website:
http://www.1010tires.com/tiresizecalculator.asp Stock Tire - 175/65R14 >Search Tires Tire 1 - 185/55R15 >Search Tires Tire 2 - 195/55R15 >Search Tires
Section Width: 6.88 in 175 mm
Section Width: 7.28 in 185 mm
Section Width: 7.67 in 195 mm
Rim Diameter: 14 in 355.6 mm
Rim Diameter: 15 in 381 mm
Rim Diameter: 15 in 381 mm
Rim Width Range: 4.5 - 6 in
Rim Width Range: 5 - 6.5 in
Rim Width Range: 5.5 - 7 in
Overall Diameter: 22.95 in 582.93 mm
Overall Diameter: 23.01 in 584.45 mm
Overall Diameter: 23.44 in 595.37 mm
Sidewall Height: 4.47 in 113.53 mm
Sidewall Height: 4.00 in 101.6 mm
Sidewall Height: 4.22 in 107.18 mm
Radius: 11.47 in 291.33 mm
Radius: 11.50 in 292.1 mm
Radius: 11.72 in 297.68 mm
Circumference: 72.09 in 1831.0 mm
Circumference: 72.28 in 1835.9 mm
Circumference: 73.63 in 1870.2 mm
Revs per Mile: 906.3
Revs per Mile: 903.9
Revs per Mile: 887.3
Actual Speed: 60 mph 100 km/h
Speedometer1: 59.8 mph 99.7 km/h
Speedometer1: 58.7 mph 97.9 km/h
Speedometer Difference: -
Speedometer Difference: 0.265% too slow
Speedometer Difference: 2.141% too slow
Diameter Difference: -
Diameter Difference: 0.27%
Diameter Difference: 2.1%
SEE THE DIFFERENCE... This is what I mean wrong tyre size! In fact if you REALLY want 195, then 195/50R15 is MORE SUITABLE for NEW MYVI... Coz is only 1.23% too fast. RULE OF THUMB is Below 2% diameter difference.