Reply to thread

Message: <blockquote data-quote="Zul" data-source="post: 471659" data-attributes="member: 173">OK, now I understand U. What U meant is the tyre touching the front wall on turning the steering. I'm not sure the OEM size of your tyre but checking from the internet the e92 coupe size should be 225/40-18"(FA) and 255/35-18(RA). Base on that size when U plus-1 the rim size (plus 1" diameter) with the 245/35-19"(FA) size U have increase the overall diameter of the tyre by about 2.7%, the 275/30-19" (RA) size U have increase the overall diameter by about 1.9%.  In general a difference of about 3 % of the overall diameter is still acceptable. However with the increase diamter by about 2.7% now it have touch the front wall on cornering.  The only way then to correct this problem is to use tyre of different aspect ratio to reduce the overall diameter. Using 235/35-19" for the front will only increase the overall diameter by about 1.6% and with this reduce the chances of it rubbing the front wall. Your rear tyre is OK as it increase the overall diameter by about 1.9% only with the 275/30-19".  Offset of the rim usually can be found on the inner wall of the rim and stated as ET followed by the value in mm, e.g.: ET 26, meants the offset is 26 mm. So if u want to check the offset u have to see the inner wall or aspect of the rim.</blockquote>