Three weekends ago, I had a new set of Dunlop SP9000's (Lexus versions) fitted all round to my IS Sport.
Since then, my fuel consumption has been absolute pants. And I've not been seeing how much grip my new tyres have (okay, just a couple of times ).
I've got 37psi in the front and 36psi in the front.
To be honest, I expected mpg to improve with new tyres, not get worse! Nothing else has changed on the car that should affect mpg ie. its loading, driving styles etc!
Any opinions?