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The BMW Range
3 Series
E30
E30 tyre size
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<blockquote data-quote="kevster30" data-source="post: 406666" data-attributes="member: 10"><p>After a 25 year love affair, track time and tinkering with E30s, believe me, not everything is as it seems.</p><p></p><p>Wheels exceeding 16" require a lot of recalibration of the suspension. To put it very simply, weigh the difference between the wheel and tyre between 16" and 17". How does that difference impact upon your bushings, balljoints, spring and damping rates? </p><p></p><p>Most of the E30s that have been successfully running on 17s behave very unpredictable in the bends. It is almost like 'torque steer' in a FWD, as the specified footprint and contact patch has been adversely altered beyond it's original intended geometry by the engineers. Through the years I have known of at least 5 individuals who have lost their rides after going to 17s. Yes, total loss as in 'tree huggers' and 'ravine jumping'. Not to mention that the car will start surfing anything beyond 80kph in the rain.</p><p></p><p>On the topic of LS1 and LS2s, its pure ego and blatant flushing of money unless you are a chassis engineer who understands the stress dynamics of metal and the physics behind torsional rigidity.</p><p>I have personally seen one of our member's ride with a M50B32 in it. No doubt the power is there, but after a year, there is very clear evidence of stress cracks and chassis fatique at various crtical areas of the car. And this in a M40 body that has been foamed, reinforced, running strut bars at both ends.</p><p></p><p>Don't believe everything you read on the WWW. Much of it is just not very practical in application. When citing an American site like R3vs, just remember this: Harleys, Mustangs and Corvettes are beautiful loud machines that go very fast, but cannot corner or brake very well.</p><p></p><p>I believe the best template to fall upon would be the E30 M3. What was the biggest wheel size offered on the last model that rolled out of Munich? (Google and have fun <img src="data:image/gif;base64,R0lGODlhAQABAIAAAAAAAP///yH5BAEAAAAALAAAAAABAAEAAAIBRAA7" class="smilie smilie--sprite smilie--sprite1" alt=":)" title="Smile :)" loading="lazy" data-shortname=":)" />)</p><p></p><p>In our quest to customize and be different, we must always keep safety as the paramount importance. I leave you with this concept to think about: engineering integrity.:top:</p></blockquote><p></p>
[QUOTE="kevster30, post: 406666, member: 10"] After a 25 year love affair, track time and tinkering with E30s, believe me, not everything is as it seems. Wheels exceeding 16" require a lot of recalibration of the suspension. To put it very simply, weigh the difference between the wheel and tyre between 16" and 17". How does that difference impact upon your bushings, balljoints, spring and damping rates? Most of the E30s that have been successfully running on 17s behave very unpredictable in the bends. It is almost like 'torque steer' in a FWD, as the specified footprint and contact patch has been adversely altered beyond it's original intended geometry by the engineers. Through the years I have known of at least 5 individuals who have lost their rides after going to 17s. Yes, total loss as in 'tree huggers' and 'ravine jumping'. Not to mention that the car will start surfing anything beyond 80kph in the rain. On the topic of LS1 and LS2s, its pure ego and blatant flushing of money unless you are a chassis engineer who understands the stress dynamics of metal and the physics behind torsional rigidity. I have personally seen one of our member's ride with a M50B32 in it. No doubt the power is there, but after a year, there is very clear evidence of stress cracks and chassis fatique at various crtical areas of the car. And this in a M40 body that has been foamed, reinforced, running strut bars at both ends. Don't believe everything you read on the WWW. Much of it is just not very practical in application. When citing an American site like R3vs, just remember this: Harleys, Mustangs and Corvettes are beautiful loud machines that go very fast, but cannot corner or brake very well. I believe the best template to fall upon would be the E30 M3. What was the biggest wheel size offered on the last model that rolled out of Munich? (Google and have fun :)) In our quest to customize and be different, we must always keep safety as the paramount importance. I leave you with this concept to think about: engineering integrity.:top: [/QUOTE]
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