Quote Originally Posted by welscua View Post
Share ko lang idea ko about sa 10% error sa odo reading.
I think the Carens was calibrated for 17 wheel (US version). AFAIK, the speedo is actually measuring the distance by converting the wheel rpm to distance. Example, 1 rotation of 17 (bigger) wheel is equal to its circumference. So parang biniyak mo yung 17 wheel and inilatag mo sa kalye and measure the length. Ganun din sa 15 wheel pag biniyak mo yun ang total length niya ay shorter than the length of 17 wheel. The circumference of 17 wheels is longer than the circumference of 15 wheel due to longer wheel radius.
So, if the speedo is calibrated to measure distance using 17 wheel then it will show an error if you use a 15 wheel. And this error (approx 9%) will result in error in speedo kph reading, odometer distance reading and computation of FC. Talo sa 100,000 km warranty.

SHARING IS CARING.....
Speedometer encoders are placed in the gears of propeller shafts or in axle shafts.. so even if it was indeed calibrated using the 17 inch mag wheels, changing the wheel size from 17 inch to 16 or 15 inch, speedometer / odometer readings will not be affected... what will be affected is the "actual speed" measurement... because the engine via transmission will make the wheels turn and not the wheels turning the engine...

for example say for 17 inch magwheels you are running at "speedometer reading" of 100kph and your "actual speed" also reads 100kph, if you change your magwheels to 15 inch your "speedometer reading" will still read the same 100kph but the "actual speed" will be offset and that may read 90kph

this is true to any car... changing tires, magwheel size will affect actual speed reading but speedometer readings will still be the same.. larger tires and magwheels also may affect your FC..