Originally Posted by Zatanna Z (Post 3605623)

Oh and I'm wondering how does this tire size affect performance?

Originally Posted by Zatanna Z (Post 3605473)

Option zero- I just checked my tires as I speak the fronts say 24540zr19 so I'm not sure if they're DC'd now or what but that's what I read. I'm not the one who got these tires in the first place since I bought the car used. And I'm very OCD about doing things properly when it comes to my cars. I tried researching on this forum if that tire size is okay.. couldn't find much. So I asked around to some people I know who know quite a bit about cars they told me I'd be okay..

Originally Posted by jchammond (Post 3605638)

OCD,,,look in the door jamb & it will tell you what size came on the car...if it still has the factory wheels it came with.

Originally Posted by ChaseZ (Post 3605702)

And since when do you have to run same tires front and rear?

My fronts
http://www.s2ki.com/s2000/uploads/ga...9409_12931.jpg

My rears
http://www.bestusedtires.com/common/...es/47422_2.JPG

And my rears are about to be these
http://s7d4.scene7.com/is/image/Turn...prodpg640x480$

Originally Posted by Zatanna Z (Post 3605705)

What sizes you gonna be running front and back? Those tires look beefy

Originally Posted by ChaseZ (Post 3605729)

I run 18's so subtract 5 off each sidewall for the equivalent in 19"

F: 275/40
R: 325/35

Originally Posted by jchammond (Post 3606081)

With your 245,275/40/19 setup; this may be the most diameter differential I've seen without causing the Christmas Tree effect.
Around a 3.5% difference @ right at a full inch taller in rear.
Is your Z a Sport with 9/10 stagger or 9.5/10.5 Nismo stagger?

Originally Posted by ChaseZ (Post 3606135)

Yes I'm running different tires front and rear right now. It is the height you need to watch for not the width.

With that inch taller rear tire remember you are effectively changing your rear end ratio, which is a torque multiplier. Your speedometer will also be off now, as will the mileage you are putting on your odometer.

Originally Posted by B&W_Evader (Post 3606526)

RE-11, 245s up front 285s in the rear. Great summer tire setup that will get you a lot of miles. (40k on my last set) It does not get cold enough to be an issue here but I wouldn't leave them on (or any max performance summer tire) in the winter in Nebraska.

Originally Posted by ChaseZ (Post 3606135)

Yes I'm running different tires front and rear right now. It is the height you need to watch for not the width.

With that inch taller rear tire remember you are effectively changing your rear end ratio, which is a torque multiplier. Your speedometer will also be off now, as will the mileage you are putting on your odometer.