Quote:
Originally Posted by jonathanss
Hello I put new tires on my 2018 SS 1LE rear only though. I got some pirelli scorpion 305/40/20 I’ve only driven on them about 5 miles max. I noticed the light while going home. Any ideas what it could be ? Are the tires too big?
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Yes, tire diameter is much too big.
The 305/40-20 tires are 2.4 inches in diameter bigger than the stock 305/30-20's.
You could go with wider 315/30-20's or maybe 325/30-20's (not sure if they would rub) and only be 1.8% larger diameter than stock which is I think within the tolerance that the stock stabilitrack system will allow.
https://tiresize.com/comparison/