C&D tested the I8 @ 3.8 to 60mph, a tenth faster than the M4. This is from the same August issue. Yes, it's only one test from one source but proven nonetheless.
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2017 BSM M2|6MT|Exec|black kidneys and gills|full alcantara wheel|CF spoiler|Dinan Stage 4|Dinan COI|Dinan free flow exhaust with resonator delete|Fabspeed sport cat DP|BMS clutch stop|465 bhp|4.75/5 stars
retired: 2014 435xi|MPPK|335 bhp|3/5 stars
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