Did you use you stock tpms or you bought new ones?I replaced the factory wheels a couple weeks ago with a set of Konig rennforms. They are 18x8 45mm offset. Weigh in about 18.5 lbs. to 18.8 lbs. The stock wheels are actually 27 to 27.5 lbs. SUPER heavy. Konig are known for being good wheels and these are forged so they should be reasonably strong. Best part is for forged wheels they are priced very well. I got the set of 4 for $756 shipped. Wheelplususa.com had the best price on them by far. Car definitely feels more lively when driving.