Took my totally stock 2016 GTPP to Buttonwillow a few weeks ago and on one session got a rear diff warning, as did the other GTPP there that day. What is it warning about, and what mods do I need to make it not happen?
Used to own a 2007 GT500 and put Griggs ST kit on it. I had 305/35ZR18s all four corners. I've got a 2016 GT PP now.
Griggs has had an SLA kit for the S550 in the works for a while now but I'm impatient.
Anyone here had success running 305s all around, and if so, how did you do it?