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Message: <blockquote data-quote="astroboy" data-source="post: 472023" data-attributes="member: 4527">zhul is right! :top:..because of the requirement to bed in rotated tyres all over again after rotation to achieve full tarmac-tyre surface contact, before which, traction is compromised. Camber for each wheel is never identical. The slightest degree of 0.01 degree of camber variance between tyres will cause small percentage in compromised traction once the concerned tyres are swapped, effect multiplied by the vehicle speed! <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek!    :eek:" loading="lazy" data-shortname=":eek:" />The act of rotating tyres is to salvage tyres to maximum mileage over Ringgit, and not optimising traction. So there's a small price to pay and BMW is not taking any chances! :top:I almost totalled my E90, driving with DSC shut off, in heavy down pour, using freshly left/right rotated rear tyres, with one of them suffer severe inner wear, due to one side overly negative camber, running with fresh camber settings, at the curve outside of Pizza Hut Tmn Tun, Kepong bound. Lucky the car catches by itself after an over 15 degree oversteer. The body roll during the flip probably cause the tyre to find a better traction spot. If stiffen anti roll bar, habis!</blockquote>