Quote:
Originally Posted by arpad_m
Isn't that 3% the maximum safe aggregate difference between front and rear, though? Actually, I'm not sure what happens when someone deviates >3% on both ends (so the relative diff vs stock between front and rear is 0 or very small), but does not adjust the rotational parameters in the tune.
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I would hope that >3% is deviation front to rear, but given how much control GM put into the system it would not be surprising that speedometer-to-wheel rotation is in an algorithm somewhere. Conversely I would hope if that algorithm is in there, it is noticing if all wheels are still spinning in sync, which would essentially negate the wheel diameter change as long as the same for all four.
If it is, I am then curious if this would be a simple fix at a dealership to reprogram the tire diameter...
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2018 Red Hot 1SS, GM lowering kit & 1LE Sway bar kit, ZL1 1LE solid rear cradle bushings, BMR sway bar end links, GM CAI w/tune, Pray ported IM, Mamo ported TB, VS Forged VS07 rims 20x11 & 20x10 w/ Michelin PS4S