During our Dutch meet Ultraplanet noticed that I have 18/45 front tyres and 18/40 on the back.
To be honest, I never noticed it.
My front tyres were replaced with Goodyear non-runflats after a puncture. Seems that I ordered the wrong wheel size.
When I look at the car now it is noticeable that the front fills the wheelspace better and it looks more massive, in fact i like it better this way and they are far more comfortable.
Also the speedo readout did not seem to have changed (perhaps it's measured at the rearwheel?)
I compared it to a portable gps and there is only a minor difference of about 5km's on the plus @ 120 which I believe is normal.
So far I noticed no scraping or other disadvantages, maybe something to watch out for?

have a look...

edit: cannot upload a picture now, will try later :'(

 

speed is measured at the rear wheels.

The ABS/DSC system maybe out of whack....or maybe not. Just something to becareful of.

 

I agree they fill the fender better and see no negatives. Plus the Eagle F1 is a fine looking tire You just need 2 more!