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The BMW Range
3 Series
E90, E91, E92, E93
Checking Tyre Pressure
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<blockquote data-quote="astroboy" data-source="post: 368579" data-attributes="member: 4527"><p>Must understand the reason behind rotating tyres. Its basically to miximise tyre life span to promote uniformity in tyre wear plus to keep all 4 wheels on equal tread thickness to achieve balance in handling the way OEM intended, and when come to changing tyre, all 4 can be changed at one go. So can decide in different tread pattern with out compromising traction balance.</p><p></p><p>Meaning if your tyres are wearing evenly and equally, then no reason to rotate. Which of course is seldom the case.</p><p></p><p>Understand your tyre tread pattern and size which also determine whether rotation is possible. Pay attention to directional and asymmetric tread pattern. Directional tread require remount of tyres if you need to do left/right rotation while asymmetric tread must not remount due to its inner and outer tread pattern. CSC2 is asymmetric.</p><p></p><p>My style (normally not the recommended way.. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" />), check tyre wear to establish any unevenness in the wear pattern. If any unusual wear is spotted, ask yourself some questions.</p><p></p><p>1) Would you mind allowing the unusual wear to continue or let it be until next tyre change?</p><p>2) Would you like to rectify the alignment/camber to rectify wheel angle or let it be until next tyre change?</p><p>3) Do you plan to replace 2 or 4 tyres at one go and when? Budget matter. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" /></p><p>4) Are u selling your car soon? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite8" alt=":D" title="Big Grin :D" loading="lazy" data-shortname=":D" /></p><p>5) Is your car still under warranty? and does that cover alignment? <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite9" alt=":eek:" title="Eek! :eek:" loading="lazy" data-shortname=":eek:" /></p><p></p><p>One very critical information left out when rotation of tyre is involved. Once the tyre is rotated, the tyre surface will not seat to the road surface as well as before due to the different angle of each wheel mount. It takes a while to let the tyre wear in and seat properly to the road surface in their respective new locations. So don't push the car too hard after tyre rotation. This is one reason why performance car mostly won't bother to rotate their tyres, they are on staggered set anyway. So front/rear rotation is not possible.</p><p></p><p>So will I rotate my CSC2? Maybe.. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" /></p><p></p><p>Again, I might be wrong and usually is.. <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite7" alt=":p" title="Stick Out Tongue :p" loading="lazy" data-shortname=":p" /></p></blockquote><p></p>
[QUOTE="astroboy, post: 368579, member: 4527"] Must understand the reason behind rotating tyres. Its basically to miximise tyre life span to promote uniformity in tyre wear plus to keep all 4 wheels on equal tread thickness to achieve balance in handling the way OEM intended, and when come to changing tyre, all 4 can be changed at one go. So can decide in different tread pattern with out compromising traction balance. Meaning if your tyres are wearing evenly and equally, then no reason to rotate. Which of course is seldom the case. Understand your tyre tread pattern and size which also determine whether rotation is possible. Pay attention to directional and asymmetric tread pattern. Directional tread require remount of tyres if you need to do left/right rotation while asymmetric tread must not remount due to its inner and outer tread pattern. CSC2 is asymmetric. My style (normally not the recommended way.. :p), check tyre wear to establish any unevenness in the wear pattern. If any unusual wear is spotted, ask yourself some questions. 1) Would you mind allowing the unusual wear to continue or let it be until next tyre change? 2) Would you like to rectify the alignment/camber to rectify wheel angle or let it be until next tyre change? 3) Do you plan to replace 2 or 4 tyres at one go and when? Budget matter. :p 4) Are u selling your car soon? :D 5) Is your car still under warranty? and does that cover alignment? :eek: One very critical information left out when rotation of tyre is involved. Once the tyre is rotated, the tyre surface will not seat to the road surface as well as before due to the different angle of each wheel mount. It takes a while to let the tyre wear in and seat properly to the road surface in their respective new locations. So don't push the car too hard after tyre rotation. This is one reason why performance car mostly won't bother to rotate their tyres, they are on staggered set anyway. So front/rear rotation is not possible. So will I rotate my CSC2? Maybe.. :p Again, I might be wrong and usually is.. :p [/QUOTE]
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Checking Tyre Pressure
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