hi waynne sorry for not answering been on hols lol fuel economy much the same but the difference in power from 3thou revs onwards is staggering and yes im already into a new set of tyres after one month lol btw just fitted drilled and grooved discs and red stuff pads all round lol my m8 said he saw the discs glowing the other evening and boy were they smoking when i stopped hahahahaah.