also dont forget it also depends on what car as well.different car have different wheel arch size as well maximum width where by ideally a certain size is good for a particular rim but it wont fit the car due to width issues...Fitting what width tyres to a rim, depends on their aspect ratio also.
Does not mean 225 will fit 8JJ better or 7JJ better.
For example 235/45/R17 will fit 8JJ, but 235/55/R17 will fit 7.5JJ better
Topic is on what size tyres fits what rim size.also dont forget it also depends on what car as well.different car have different wheel arch size as well maximum width where by ideally a certain size is good for a particular rim but it wont fit the car due to width issues...
just my mili cents....