I got new rims and tires on my 350Z, and now when I take corners at 50-60mph my spinning light comes on and I can feel my rear tires losing control. Any ideas why and how to fix this?

Bridgestone Potenza RE050A (STOCK)
Nissan Stock 2007 Rim
F 225/45R18 91W
R 245/45R18 96W

New wheels I'm running:
Yokohamas with Maya MRS Rims
F 245/35R20 95Y
R 275/30R20 97Y

 

The overall diameter of your front tire is larger than your rear. I am assuming you are running 19 inch rims now. Your front diameter is 25.75in, your rear diameter is 25.49in. Your car is meant to have a larger diameter tire in the rear. You need to put a 35 series tire on rear instead of the 30 you have.

Edit: My bad I see you have 20s, but your front is still larger in diameter, front=26.75, rear=26.49, maybe go with a 30 in the front instead.

 

a. All new tires are are slippery. Give them 100 miles.

b. What Yokohama tires?

 

S drives

 

The 245/275 combo only works when both front and rear are the same profile (30, 35, 40, 45). If you mix profiles, you risk causing problems with TCS/VDC which is apparently what you're seeing.

Full explanation here.... https://my350z.com/forum/showthread....1&postcount=42