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The BMW Range
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e36 328 ownership experience
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<blockquote data-quote="Lee36328" data-source="post: 699532" data-attributes="member: 113"><p>Finally, putting it all together, courtesy of Mike Kojima.</p><p></p><p><img src="http://i51.photobucket.com/albums/f369/L36328/SuspensionSetupGuide-TypicalToeSetups_zpsb66b81bb.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>Looking at this table, I noticed a couple of things:</p><p></p><p>1. The rear toe in is set at 1/8" (3.17 mm) and gets progressively larger the harder the driving.</p><p>2. The front toe in also gets progressively higher the more aggressive the driving.</p><p>3. As a rule of thumb, the front toe in is about half the rear toe in. Certainly, the front toe in is never higher than the rear toe in. <strong>This is an important clue.</strong></p><p><strong></strong>4. The front toe in increases from about half, to finally equal to the rear toe in as we move up the aggressiveness scale.</p><p></p><p>Which explained what happened to me in my initial set up.</p><p></p><p><strong>Initial Set Up</strong></p><p></p><p>Front toe in 1.5 mm, rear toe in 0 mm. </p><p></p><p>Result: Awful. Steering felt stiff, heavy, unresponsive. Car was reluctant to accelerate, felt like it was dragging something. Body rolled into corners.</p><p></p><p>Changing the rear anti-roll bar from soft to hard helped a bit, but not enough. Roll persisted.</p><p></p><p><strong>Set Up 2</strong></p><p></p><p>Front toe in 1.5 mm, rear toe in 1.5 mm.</p><p></p><p>Result: Steering became alive again, light and nimble. Car moved freely, unencumbered. Some body roll in to corners. Understeer was reduced by adjusting front and rear tire pressures, but roll persisted.</p><p></p><p><strong>Set up 3</strong></p><p></p><p>Front toe in 0.6 mm, rear toe in 1.0 mm (remember the rule of thumb, front toe in is less than rear, about half)</p><p></p><p>Result: Steering nimbleness retained. Car now pulls even smoother, a 'one-piece' connected feeling.</p><p></p><p>Best of all, going into corners, the roll is much reduced. Once into a corner, car corners flat and level, giving me confidence to sling the rear around more aggressively if I felt the need.</p><p></p><p><img src="http://i51.photobucket.com/albums/f369/L36328/Rebirth/SuspensionSetupGuide-RearToeIn_zps5f6fb821.png" alt="" class="fr-fic fr-dii fr-draggable " style="" /></p><p></p><p>I recall this table again. Here, even though the alignment mechanic may disagree, I think I've proven to myself that the toe in settings can indeed affect body roll, as the Kojima table above described. </p><p></p><p>The table also described that with too much toe in the car wants to grab traction and straighten out suddenly, something my car was prone to do in the past. I think I may have found the cause and the solution. </p><p></p><p>This is so far limited to a couple of laps around the Batu Tiga industrial park, as I am writing this from Desmond's new KLAuto outlet near the alignment shop. When I've had a chance to drive it more thoroughly, will report any further findings.</p></blockquote><p></p>
[QUOTE="Lee36328, post: 699532, member: 113"] Finally, putting it all together, courtesy of Mike Kojima. [IMG]http://i51.photobucket.com/albums/f369/L36328/SuspensionSetupGuide-TypicalToeSetups_zpsb66b81bb.png[/IMG] Looking at this table, I noticed a couple of things: 1. The rear toe in is set at 1/8" (3.17 mm) and gets progressively larger the harder the driving. 2. The front toe in also gets progressively higher the more aggressive the driving. 3. As a rule of thumb, the front toe in is about half the rear toe in. Certainly, the front toe in is never higher than the rear toe in. [B]This is an important clue. [/B]4. The front toe in increases from about half, to finally equal to the rear toe in as we move up the aggressiveness scale. Which explained what happened to me in my initial set up. [B]Initial Set Up[/B] Front toe in 1.5 mm, rear toe in 0 mm. Result: Awful. Steering felt stiff, heavy, unresponsive. Car was reluctant to accelerate, felt like it was dragging something. Body rolled into corners. Changing the rear anti-roll bar from soft to hard helped a bit, but not enough. Roll persisted. [B]Set Up 2[/B] Front toe in 1.5 mm, rear toe in 1.5 mm. Result: Steering became alive again, light and nimble. Car moved freely, unencumbered. Some body roll in to corners. Understeer was reduced by adjusting front and rear tire pressures, but roll persisted. [B]Set up 3[/B] Front toe in 0.6 mm, rear toe in 1.0 mm (remember the rule of thumb, front toe in is less than rear, about half) Result: Steering nimbleness retained. Car now pulls even smoother, a 'one-piece' connected feeling. Best of all, going into corners, the roll is much reduced. Once into a corner, car corners flat and level, giving me confidence to sling the rear around more aggressively if I felt the need. [IMG]http://i51.photobucket.com/albums/f369/L36328/Rebirth/SuspensionSetupGuide-RearToeIn_zps5f6fb821.png[/IMG] I recall this table again. Here, even though the alignment mechanic may disagree, I think I've proven to myself that the toe in settings can indeed affect body roll, as the Kojima table above described. The table also described that with too much toe in the car wants to grab traction and straighten out suddenly, something my car was prone to do in the past. I think I may have found the cause and the solution. This is so far limited to a couple of laps around the Batu Tiga industrial park, as I am writing this from Desmond's new KLAuto outlet near the alignment shop. When I've had a chance to drive it more thoroughly, will report any further findings. [/QUOTE]
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