the question i think you need to ask is if you're really concerned with lots of traction (are you tracking your car? is your car making a lot of power that it keeps breaking the tires loose under acceleration?) If you are, then get the PSS, but if you're just using your car for every day use and some spirited driving, i think the v12s will be more than sufficient for your use and you'll get to save a lot of money which you can spend on other mods.
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