Quote:
Originally Posted by MaxHedrm
Setting it for wheels is not the same as setting it for a different rolling circumference. But as long as you have tires that match one of those sizes you're good.
Did what Google earth said match your speedo? If not you have to include that percentage in all your calculations ... that seems like a lot of work every time you fill up.  |
I'm sorry, i have to try to explain better, when i adjust the speedo, i set to the wheel diameter too, standard wheel and factory specified tyre to match that wheel (entire wheel diameter), so with 15" i can only use 195/65R15 tyres, with 16" 205/55R16, with 17" 225/45R17, with 18" 225/40R18.
My speedo reads about 208km/h, gps tracking(the google maps thing you see in the picture is actually my data from gps tracker) reads 204, my car digital speedo reads 203 almost like the gps, it's hard to know the perfect speed reading from the speedo needle(my speedo scale goes from 0km/h to 260km/h.
Usually i dont drive that way in the streets, it's only for test purpose, i always drive safe under speed limit & econo.