T/S specs aren't really suited to car audio, but yeah I suppose it'd work.. how well is the real question I suppose.
Heed my ADVICE DON'T try to put a Tumult sub in your car. It will sound like crap believe me I tried it. The Brahma 15 hits harder and is much louder than the Tumult 15 in a car. If you really like the Tumult 15 sub and you are willing to spend $800 for a sub then buy the Brahma EXTREME 15 inch custom sub. It looks identical to the Tumult 15 sub. It has a 34mm one way excursion and can handle up to 4000 watts RMS. Buy two of those bad boys and with the right amplifiers you will easily be hitting in the low 160dB range.