06-01-2022, 09:43 AM | #1 |
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Drives: BMW M235i F22
Join Date: Jun 2022
Location: Surrey, UK
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Track noise limits?
Hi guys, wondering for those that have done trackways with decibel limits what you've run?
I've currently got a Sports Cat (downpipe) and a Miltek race catback (with a valve) on my M235i and was hoping to do some trackdays but not sure if id have to put my standard exhaust back on for it as it is quite loud lol, most of the tracks I'm looking at have 95-98 decibel limit at standstill and 102-105 drive by limit |
06-01-2022, 10:46 AM | #2 | |
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For reference dB are expressed as a logarithmic equation, not linear. So 98 at 50' is kind of loud, 100 at 50' is significantly louder, etc. In addition, atmospheric conditions (cloudy/overcast) can effect the measurements by as much at 2-3 dB from a known previous measurement. Hope this helps. |
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Appreciate
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