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The BMW Range
Z Series
19 inch on Z3
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<blockquote data-quote="ausserdem" data-source="post: 321458" data-attributes="member: 8859"><p>Installing 16" - 19" as long as the overall diameter of the wheel is the maintain, it will be ok.</p><p>Check <a href="http://www.1010tires.com/TireSizeCalculator.asp" target="_blank">http://www.1010tires.com/TireSizeCalculator.asp</a></p><p>Play with the numbers and you will understand better. The diameter must be within 3% difference.</p><p>Example: 225/50R16 has 24.85" diameter while 235/30R19 has 24.55" diameter.</p><p>The difference is 1.21% </p><p>It's important to keep the diameter within 3% of the original, so that your speedo and more importantly ABS would work correctly. A smaller wheel will have to spin more to cover the same distance than a large wheel. Think 13" an 19"</p><p></p><p>initialM is right too about offset. Keep to the same offset is possible.</p><p>Try <a href="http://www.1010tires.com/WheelOffsetCalculator.asp" target="_blank">http://www.1010tires.com/WheelOffsetCalculator.asp</a></p><p>Original offset of a Z3 rim is 47mm. Therefore a 225 tyre on 47mm offset rim will be ok.</p><p>But my wheels are 40mm offset (they stick out by 7mm) I cannot use 225 tyres as it will start rubbing, thus I have to settle for 215 or 205 tyres. Trust me. I learnt the hard way. Those plastic wheel housing will set you back by RM600 / pair. :stupido:</p></blockquote><p></p>
[QUOTE="ausserdem, post: 321458, member: 8859"] Installing 16" - 19" as long as the overall diameter of the wheel is the maintain, it will be ok. Check [url]http://www.1010tires.com/TireSizeCalculator.asp[/url] Play with the numbers and you will understand better. The diameter must be within 3% difference. Example: 225/50R16 has 24.85" diameter while 235/30R19 has 24.55" diameter. The difference is 1.21% It's important to keep the diameter within 3% of the original, so that your speedo and more importantly ABS would work correctly. A smaller wheel will have to spin more to cover the same distance than a large wheel. Think 13" an 19" initialM is right too about offset. Keep to the same offset is possible. Try [url]http://www.1010tires.com/WheelOffsetCalculator.asp[/url] Original offset of a Z3 rim is 47mm. Therefore a 225 tyre on 47mm offset rim will be ok. But my wheels are 40mm offset (they stick out by 7mm) I cannot use 225 tyres as it will start rubbing, thus I have to settle for 215 or 205 tyres. Trust me. I learnt the hard way. Those plastic wheel housing will set you back by RM600 / pair. :stupido: [/QUOTE]
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