Standard Wheel/Tyre Sizes

C

craigdm

Member
 Lytham St Annes, Lancashire
Newbie Lurker just doing the ground work before plunging in for a 3.0Si.

Can someone give me a list of original wheel/tyre sizes please. Love the looks of some of these 19" monsters, but at my age I'm more interested in a bit of comfort of our knackered roads than I am about ultimate performance (Actually swopped 19" for 18" on my DS4 and it improved things enormously!).
 
This link should have all the OEM sizes.

http://www.alloywheelsdirect.net/bmw_alloy_wheels/z4_e85

The 16's won't fit on an 3.0SI.
 
I was really more interested in the tyre sizes, in particular the aspect ratio just to see how much difference there is. I'm guessing the ride comfort will also be increased by loosing the runflats.
 
Running a forum members reg number through Blackcircles it tells me that the only OEM wheels were 18" and the tyre sizes are 225/40 Front & 255/35 Rear.

Does that sound right or were 19" a factory option?
 
yes 225/40 & 255/35 are OEM.

19's weren't an option but I think some Si's came with 17''.
 
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