tires and mpg

[Baxter]

iv got a set of insa turbo special tracks,

and was wondering what on approx average my mpg would drop ?

 

[(RIP) PLANK]

I dont thnk there is an equation to be precise on this and it will have to be trial and error, but you will experience a drop, but i wouldn't have though it will be too much.

Though be carefull cornering and braking on wet roads for a while until you get used to a heavier tread as there is a lot less rubber touching the road!