I am wondering whether can i do 245/45/18 all round on track with vdc? Will that screw up my vdc? Will i have any problem? Can i take out the tyres and rotate them? Thanks,urgent.

 

that tire is taller than stock - go with a 40 or 35 series (better for looks IMO). It will look like an offroad tire VDC looks for a stagger on the rear though, so you may have issues.

 

It may or may not cause issues with your VDC, and if you are trying to do this on your stock track wheels, you realize the wheels are staggered anyways so you won't be able to rotate them even if you wanted. Using those sizes all around will also raise the front of your car higher than stock. So in conclusion, why would you do such a thing?

 

 

I run 245/40/18's and they've been great.

 

so you have been using 245/40/18 all round without problem? hence 245/45/18 should be fine too?

 

Might be a bit tall. 40 is as high as i'd go. It'll probably work fine.

 

Hi i am wondering should i go 225/45/18 and 245/45/18 with re050a Pole position

or

245/45/18 all round good year eagle f1 gs d3?

or 245/40/18 and 245/45/18 good year eagle f1 gs d3(hate 40 series hate low profile)
advice please, which is a better tyre ? goodyear or bridgestone?

 

40 series low profile? I like your last option the best, because you will get the most width on the stock wheels, and still maintain the height stagger. BTW, do you have the 03-05 touring 18's or the track or 06+ 18's. That makes a difference because the 03-05 tourings are 18x8 all around, while the track and newer 18's are 18x8F 18x8.5R, so running a nonstaggered setup wouldn't be beneficial anyways since you can't rotate them

 

is track and i can always take out the tyres to rotate.

 

I like my Falken 452's, and they're about half the price as either other option. If you're driving in the dry, look at Falken 615's.

And you know the 40's aren't really lo-pro right?

 

no, educate me please, and please intro a good place to buy tires as well, thanks

 

Well you live in Australia... can't really help you out!

But the side measurement is a ratio,,, here is an example

"Sidewall Aspect Ratio

Typically following the three digits identifying the tire's Section Width in millimeters is a two-digit number that identifies the tire's profile or aspect ratio.

P225/50R16 91S

The 50 indicates that this tire size's sidewall height (from rim to tread) is 50% of its section width. The measurement is the tire's section height, and also referred to as the tire's series, profile or aspect ratio. The higher the number, the taller the sidewall; the lower the number, the lower the sidewall. We know that this tire size's section width is 225mm and that its section height is 50% of 225mm. By converting the 225mm to inches (225 / 25.4 = 8.86") and multiplying it by 50% (.50) we confirm that this tire size results in a tire section height of 4.43". If this tire were a P225/70R16 size, our calculation would confirm that the size would result in a section height of 6.20", approximately a 1.8-inch taller sidewall."


So... a 225/45/18 will be skinnier than a 245/45/18. Get it? That's why I went with 40's. Or, if I was to get 265's... I'd get 265/35/18's

If you're concerned about rain, 245's will be better (skinnier) and the tire options you selected are fine, as well as the Falken 452's.

If you are in a dry area... get 265/35/18 Falken 615's or Bridgestone KD's

 

You cannot run 245/45-18 all around on a Z equipped with VDC. If you want to run 245's all-around on a Z equipped with VDC, you should put 245/40-18 on the front and 245/45-18 on the rear. VDC will be fine with that arrangement.

I run this setup with VDC and Goodyear Eagle F1 GS-D3. It works just great.

--Spike

 

running a square setup will be 99.99999999999999999997 % VDC problem free. And the one **** up I had with VDC is when I should have had it off.

OP do some research into square setups. I will run square from now on.

 

But you did report a problem with your setup (it was a thread you started and a long discussion afterwards). My setup has never failed (VDC on or off).

--Spike

 

That was the "99.99999999999999999997 %" problem free I mentioned. However, I had a couple problems with VDC running the factory set up too. But because the rear is easier to slide out (which is good!) it did **** with VDC. Now, though, if I know I'm driving hard, I'll just turn it off. problem free ever since.

 

But... I want to know I can keep my VDC on anytime I think I need it (slippery roadways, rain, etc.), and never have to worry about violating VDC parameters because of tire sizes.

After reading the thread you posted recently describing a VDC failure you experienced and described, I am thinking "99.99999999999999999997 % problem free" isn't good enough since my tire/wheel setup is 100% problem free (VDC on or off).

--Spike

 

Well, then a square set up isn't for you, because I can't guarantee 100 percent problem free.

 

^^ You are probably (make that certainly) a better driver than I am. I'm getting a little older and no longer willing to depend upon fast reflexes. To compensate for my age (and less reaction time), I depend upon electronics to keep me safe. The Z's VDC is just great for an older driver (same goes for a younger and inexperienced driver).

I occasionally push "it," but I know my limitations. I never liked the OEM 225/45-18 fonts and 245/45-18 rears. That arrangement ( I have a 2003 Performance model) provides more under-steer than I want in a performance car.

To get better handling, I selected to go with a wheel/tire arrangement that provides more neutral handling. So, I put 245/40-18 tires on the front and 245/45-18 on the rears. My decision for this setup was to maintain the Z's VDC function (again, my car is a 2003 Performance model equipped with VDC). This setup is just great. I am running Goodyear Eagle F1 GS-D3, and I really like this tire. It's really fun to push the car hard with this tire setup.

--Spike