I am not familiar with your tires but as I previously mentioned the app showed 9dB higher than my real dB meter so your sound level may be only about 72dB. IMO 80 would be very loud and not acceptable. In fact, I did not think that 78dB was acceptable thus I put on four new tires which brought the sound down to 68dB. OTOH, my CF is NA so maybe that makes a difference...never been in, or even seen, a SRT-6.