speedo is way out...

[J03]

around 60mph+ the speedo reads faster than what am doing, roughly 7-10 mph more... this is after ive changed to 15s on my car... how can i fix it?!?

 

[ClioRacer18]

Once you change the alloys generally its going to read different
Only way i can think of is going to a garage or ideally the place u bought them from see what they say, should jst be a matter of setting it up with the new wheels. Not 100% though

 

[ForceIndia]

Needs recalibrating, imagine the rolling radius is lower on the new wheels.

 

[gilly123]

just live with it mate, my car came with 15'' wheels, with 16'' wheels it is over 11mph over at 70! the only time its ever been close to being right was with 17''s

 

[Timmay]

at least you wont get cuaght for speeding