I have an 04' roadster with 20" wheels, when I take turns at high/medium speeds the slip light comes on it feels like the rpms drop & loses power & I have to drop gear to get the power back? does anyone know if this is normal? any info you can give me would be appreciated.

 

Not sure if this is normal with suspension changes, but I have the same problem quite frequently and it really annoys the #$@! out of me. Happens most in 2nd gear. Not sure if it is my 19" wheels, it seems it started occurring more when I had it lowered (1" with Tein S-Techs) -- maybe a combination of both?

 

research VDC and aftermarket wheels.

 

I have seen posts before re: VDC but 2004 Roadsters don't have VDC....only TCS.

I did find this though...although it doesn't seem to solve my problem because my tires are sized properly (245/35/19 and 275/35/19).

https://my350z.com/forum/wheels-and-tires/203755-will-these-tires-work-with-my-vdc-enabled-car-read-here.html

My problem did start to occur much more frequently after I had the car lowered (I also have Hotchkis sways set at medium F&B). I just live with it though... because aside from this issue which occurs only when taking very sharp turns in town at speeds my ZR can definitely handle (i.e., at a stop light etc.) it handles like it's on rails on the twisties and it's worth the trade-off!

 

Thanks for all your input, I thought there might have been an electrical issue with the car but this sounds very common, obviously the person put the wrong sized tires on this car, but it looks awesome! Since I didnt put the tires on, I think I will just live with it until they need to be changed.

 

Your car looks awesome, bet that is fun to drive in SoCal

 

Have you tried disabling the TCS? its the button on the left side of the steering wheel....

 

What size tires?