Having just picked up a set of original Design 90s
to replace the Boxster wheels currently on my car, I will be getting them refurbed ready for some new rubber. I have a pretty good idea which make/model of tyres will be fitted, but would appreciate some thoughts on the size options.As I understand it, the standard fit tyres for 7J front & 8J rears is 205/55 and 225/50 respectively, but having checked a few tyre sites on the web, the rear ones don't seem to be appropriate for 8" rims (recommended only on 6-7.5")
. As an alternative, I could go for 245/45s, which are recommended for 8-9.5" rims and have the same rolling radius. If I did this, it seems sensible to go for slightly wider ones on the front as well to match, which would mean 225/50s.So, the question that I've got is does anyone else run 225/50/16 fronts and 245/45/16 rears? If so, any problems with fitment or extra load on the power steering? Alternatively, would the 225/245 option mean that the car was 'over-tyred' (to quote a classic Vauxhall advert
!!)Phil
. I will follow your advice and stick to the 205/225 combo, which will also save me some money to spend on something else 
)