Thread: Spark Plug Gap
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      10-15-2021, 04:27 PM   #2
thejeremyman9
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Drives: 2015 BMW 335i
Join Date: May 2019
Location: Cali

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Stock plugs stock gap unless you have problems then go colder plugs smaller gap. You want the largest gap possible without misfires. Start at stock 0.030-0.032'' and only reduce as necessary. In theory a "stronger" coil should support a larger gap. Your mods should not warranty colder plugs and smaller gap, although everyone's car responds differently.
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