Well... there somethin info i got about tyre,PCD,offset (+ve/-ve), section width, aspec ratio etc .

http://www.usacomp.com/terms.htm

ndak paham....@#!^%&^%*(*))

ur will understand when buy any smart/sport rims but can't fit into ur car coz the rim touch with the absober or lower arm at front & rear suspension (see ur rim offset)..even the rim is nice look,limited & cheapers.somethin like that la...