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      06-16-2019, 11:57 AM   #8
slicer
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Drives: 'E46 M3 Race Car, '23 X7
Join Date: Jan 2009
Location: Wisconsin - Instagram - @slicer_m

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Keep in mind that recent Porsche's and Ferrari's are using 20's but they are designed around that size. As a result they have larger diameter tires with sidewall heights equivalent to 19's on an e92 M3. In other words the overall diameter of the tire is 1"+ larger than the E92 M3. Therefore a 20" on an e92 is equivalent to a 21" or sometimes a 22" on those platforms.
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'23 X7
'04 M3 - Fall Line Motorsports Built Race Car - S65 swap, Dry Sump, Bosch Stand-Alone ECU, Drenth Sequential Trans, MCS 3-Way, Flossmann Wide Body, Brembo Motorsports Brakes, Drexler LSD, BBS E88 Etc.
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