The difference is 6.2% as i explained...not 5%....
Whilst on motorway doing 84mph with cruise on, if i reset the av consumption and speed, then it shows 80mph as av speed which is exactly what i got from the road angel....!
Anyway...just got the car back from the tyre shop...with ps2s on at 40 prof....didnt notice any difference from the ESP...handling a bit better (they are still new tho) but ride is amazing!!!! The car is so quiet...the ride so bloody smooth!!!! Think the steering is slightly less accurate...but i can get used to that....
I dont know if its the ps2s.....or the nitrogen in the tyres.....i remember my maserati drove much better when i changed to nitrogen....but not that much!!!