IMO...If your increasing rotatating mass (tire+wheel weight) over your the stock combo you should be upgrading you brakes. It takes more effort to stop the increased mass, and it also takes more effort to get it rolling. (decreased mpg) this is why lightweight forged rims are typically perferred in performance applications (centerline,weld racing, motoforge, boyd all make forged wheels). I've seen a late model mustang pick-up 17rwhp switching from heavy ass cast 20's to a steel wheel/ET Street combo of the same dia!!! Try Baer/SSBC/stoptech for brake upgrade info.
:word: You can probably get away with using stock brakes for a while, but you are going to go through pads in a new york minute. It would defintately note be advisable if you are hauling anything. That is extra weight the brakes may just tell you to get f*cked.
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