17 and 18

Hi, please everyone forgive my total lack of knowledge here, but would someone be able to let me know what the benefits are of selecting the 18" alloys over the standard 17". I know there is the better look of them, but would I notice any differences in the drive? Also, I would be very...

Trying to spec my new FR170 and am just wondering about future purchasing of tyres. What's the difference in price is for shodding the standard 17" FR alloys compared with the 18" alloys. Also are the 18" Alloys for the FR the same design as the 17"? Could owners of both sizes please post...