alloy 9j and 10j?
 

Hi all, ok this totally confusing me I looked up my alloy style on real oem and it came up with

DescriptionSupplementQty From Up To Part NumberPriceNotes03Light alloy rim FRONT
9JX19 ET:482

36116761931$492.95+core03Light alloy rim EARF
10JX19 ET:452

36116761932$551.00+coreNow what does the 9J AND 10J refer to? is it the width in inches? thanks to all

9J is a 9" wide wheel, 10J is 10" wide...
"J" is wheel contour I believe, and I have never had a non-J wheel on any car.
GL, mD

many thanks, just did more diggin around and apparently the J is just some industry standard to do with the lips on the rims, doing a bit of research and have seen that for example on my rear 10J alloy 285/45 a43 fitted the 285 being 285mm ie 11.2inches same up front got 9j alloy with 255.55 r19 tire i.e 10 inch tire width, again here tires fitted to alloys are about 1inch wider than the alloy spec....dunno why?tighter fit, but for tire rotation purposes was thinking of getting 255/50 for rear also....255mm ie 10.02 inches is close to the size of the rear alloy width so dont see why this would be an issue as some say it is ...and some say it aint:dunno: if that makes any sense?