Indeed!!!
I`ve been asking about this since I started driving rf1, quite a long time ago now.
I`ve always disliked this as it just looks... well... wrong.
I`ve binned many a screenie I was going to edit because there`s blur on the tyres and not the rims and the car is at such an angle it`s almost impossible to add radial blur to the rims in PS... all the other motion blur etc is no problem no matter what the angle of the car is so I can add loads of nice motion blur, alter many other things and after all that, still have motionless rims.
I was asking Ales just a day or so ago if he planned to add this to his mods and I think it`s not on his list...
ISI have it now on the Megane but nothing else so far. Please... modders and ISI, implement this for everything.