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<blockquote data-quote="astroboy" data-source="post: 547288" data-attributes="member: 4527">The original z4m is running on styke 224 rims, 8&quot;x18&quot; ET42 (Front), 9&quot;x18&quot; ET30 (Rear), in 225/40R18, 255/35R18, on standard ride height with correct camber, there will not be rubbing.From 255/35 to 245/40, overall diameter increases by 17mm for the rear, your front lip will dip lower due to the lift at the back.. :4:[PHP]Specification&nbsp; Sidewall&nbsp; Radius&nbsp; Diameter&nbsp; Circumference&nbsp; &nbsp; Revs/km&nbsp; Difference255/35-18&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 89mm&nbsp;&nbsp; 318mm&nbsp; &nbsp;&nbsp; 636mm&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 1997mm&nbsp; &nbsp; &nbsp; &nbsp; 501&nbsp; &nbsp; &nbsp; &nbsp; 0.0%245/40-18&nbsp; &nbsp; &nbsp; &nbsp; &nbsp; 98mm&nbsp;&nbsp; 327mm&nbsp; &nbsp;&nbsp; 653mm&nbsp; &nbsp; &nbsp; &nbsp;&nbsp; 2052mm&nbsp; &nbsp; &nbsp; &nbsp; 487&nbsp; &nbsp; &nbsp; &nbsp; 2.8%[/PHP]Rubbing issue is the least concern because your DSC may not work due to inconsistent tyre size.I&#039;m a &quot;purist&quot;, I don&#039;t recommend anything not standard.. :4:</blockquote>

[QUOTE="astroboy, post: 547288, member: 4527"] The original z4m is running on styke 224 rims, 8"x18" ET42 (Front), 9"x18" ET30 (Rear), in 225/40R18, 255/35R18, on standard ride height with correct camber, there will not be rubbing. From 255/35 to 245/40, overall diameter increases by 17mm for the rear, your front lip will dip lower due to the lift at the back.. :4: [PHP]Specification Sidewall Radius Diameter Circumference Revs/km Difference 255/35-18 89mm 318mm 636mm 1997mm 501 0.0% 245/40-18 98mm 327mm 653mm 2052mm 487 2.8%[/PHP] Rubbing issue is the least concern because your DSC may not work due to inconsistent tyre size. I'm a "purist", I don't recommend anything not standard.. :4: [/QUOTE]

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