True- if you upsize the wheels & tires, the stock brakes will look kinda wimpy even though they may work quite well. Generally if you can lock the fronts in a panic stop, the brakes are fine; what you need is more rubber on the road. If you can't lock the fronts and the brake system is perfect (which the stock system is not), then sure- bigger OD brake rotors are a good move. The slippery slope is when you get into a repeating cycle of big tires need big brakes need even bigger tires... until you run out of money or fender space.
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