^^^ Not as bad as that but it's a bit confusing for sure.

 

This isn't the brake / accelerator failsafe is it?! Where the ECU drops power under braking and pressing the accelerator.

 

DOHC, Thinking of doing the same...what was the end result? TCS happy/unhappy? any pics?

 

I run 265/40s all around on 18x9 +25 wheels, and 0 problems. I don't have VDC. TCS never blinks at me (except when I'm actually slipping). Got the idea from this article:

http://www.sportcompactcarweb.com/tech/0404scc_350z/

For pictures:

http://omgwtf.kicks-***.org/Images/Gateway0005.jpg
http://omgwtf.kicks-***.org/Images/Gateway0034.jpg
http://omgwtf.kicks-***.org/Images/Gateway0072.jpg

Works great!

-E

 

Non Satgger setting could through off the ABS system.

I am not sure about the TCS.

 

I run 265-35-18 on all four corners with VDC/TCS daily driven with NO problems at all. It functions as normal.

 

Do you think I could run 255/45/18s on all four corners?

 

i run a staggered DD setup (245/35R19F and 275/35R19R) and a non-staggered track setup (275/40R17 all four) and the TCS does not act any differently for either set-up. i leave the TCS on for normal driving, and turn it off for track work. i cannot speak to VDC as i do not have it.

 

Sure. Sidewall might be a bit "thick" looking, especially on the front. 255/40/18 would be a nice compromise - the diameter would be in between stock front and rear.

 

for this reason i WOULD stick with staggered. I've never had a problem slipping the tires while taking a tight turn. whether it is because your wheel setup or something else... that is something you should never experience in a Z unless you are trying to do it on purpose

 

Use a stagger! Width is not important, just diameter. I run 275's front and back but use 275/35 front and 275/40 rear.

 

Could you post pics of this? What are you offsets?

 

From reading all the responses in this thread, I'm reminded of the "Is VDC really off when you turn it off?" discussions and the all varying responses describing people's experiences. It was suggested in that case, and I think is applicable here as well, that the year of your car, as well as model make a difference as to how sensitive the system is calibrated. I think this is why some people that have tried this had zero problems while others did.

 

I got my car used two months ago now. It has 18 x 8" wheels all around, but the tires are 225/45-18 up front and 265/35-18 in the rear.

According to the tire calculators out there (www.1010tires.com), my rear wheels are rotating 822 revs per mile while the fronts are 801 revs per mile.

Questions:

1) why doesn't the computer think my rear wheels are slipping then? I have my VDC on all the time, and get no indication of slippage.

2) Aren't the wheel sizes supposed to be different? That is, 7.5" in front and 8.0" in the rear? Mine are all 18 x 8.0" JJ 30 mm offset.

3) Are we absolutely sure that the wheel rotations must be different in order for VDC to work correctly? I don't understand this.

If the "stock" setup is used (225/45-18 front and 245/45-18 rear) the rear wheels would rotate 780 revs per mile and the fronts are still 801 revs per mile. So, is this the range (+/- 20 revs per mile) which the computer thinks is "normal"? If not, what's the difference then?

I have to switch to all season tires. Since my wheel are all the same size, I was thinking of using 245/45-18's all around. My car is a daily driver with no racing applications.

After reading through this thread, I more confused than ever.

Please help me out here!


Thanks very much,
Joe

 

Personally, I stay within the recommended sizes. I have seen posts on the forum from people who mixed BRANDS from front to rear and had VDC problems. Even with the correct sizes.

 

Hmm, Im surprised I missed this thread! I had a set of Volk TE-37 18x8.5 all around. I had them on a previous car and put them on the Z. I had Ventus 104 sport tires in size 245/45/18 all around. I had no TCS issues at all in my 5AT or the 6MT. When those wore out however I put on staggered (F)225/45 and (R)245/45 to save a few $$$My wheels are for sale if youre interested

 

With respect, we have been talking about these same questions since the beginning of the thread.

 

Not surprising. For 9 out of 10 members who run the same size tires all around, TCS performs properly.