Hi
I'm thinking of changing to larger wheels could somebody advise me if they will be better or detrimental to mpg.
Original size is: 215 55 16
Replacement is: 225 45 18
Odometer readins are as stated:
16" wheels at 50 mph
18" wheels read 51.27 mph
16" wheels at 100 mph
18" wheels read 102.55 mph
Overall diameter is 16.8 mm larger on the 18" which equates to +2.55%
Can't get my head around if that's better for mpg or not
Thanks
Col