hate switching tires so im driving with hoosiers to the track any fuse to yank so i do not have to keep clearing codes it keeps going into fail safe mode even with dyno mode on.

 

What is the rolling circumference of those slicks? Check it vs. your fronts to see what difference there is.

More than about 2% variation from front-to-rear will cause issues. skratch77 went through a bunch of weird issues related to drag tires and fault codes.

-G

 

man I had that same freaking problem,is your car an 05?

does it hate doing burn outs and will it NOT shift at redline in M mode and bounce off the rev limiter?

it goes into a funky limp mode and will throw wrong ratio codes etc.

 

I just did a run with 265/40ZR18 Mickey Thompsons and had no such issues. Checked diameter it's 25.7 up front and 26.5 in the rear so a difference of .8" which would be 3.11% difference

 

you have an 03 and you can do a burn out for a week in that car.It has the most laidback traction control system of all the 55s.

Ill give you 20 bucks if you can get my car to do a burn out while not being in dyno mode lol

 

Good to know!! Finally I hear something good about owning an 03, lol!! Most times it always things that were bad and had to fixed. BTW I have had none of the common issues with 03's and I love my car!

 

Yup some of the 05-06s are very sensitive to variations in wheel height. Like Greg said good to stay within 2% difference.

 

I cant burnout unless in dyno mode, and also get a cel for tire circumference variations.

 

i just kept clearning the code good thing i drove to the track otherwise i would never have brought my lap top. thanks chawkins