I been search for 2 days in this forums but can't find the answers. I already ordered a set of wheels size 19-9.5 +22 front and 19-10.5 +22. rear and my brother give me 2 tires 245/40/19 for front. And now I have to buy 2 tires for the rear. I just got the first 07 roaster in my life so I don't know much about her but I believe she all stock. So I need your advice what size I should buy 2 tires on the rear. And I don't have the extra money to modified on her. I just want all flush. Thanks all advice bros.

 

245/40-19 are a bit tall (3/4" too tall) for the front of a Z33 (it's the stock size on Z34). 19" wheels on a Z33 use 245/35-19F and 275/35-19R (or 255/35 and 285/35, F-R). Wheel specs are fine for flush fit so long as you put on the proper width tire.

Would suggest you get a full set in the sizes spec'd above IF you have VDC (Touring/Track). If you run the 245/40s with the correct size in the rear, you run the chance of setting off VDC as it will think the rears are sliding due to the wheel speeds too close F-R. If no VDC and you want to run the 245/40s up front, at least run a 285/35 in the rear as it's closer to the correct F-R ratio. Not ideal but close enough.

 

https://tiresize.com/calculator/

 

Look like my car dose not have VDC. I just checked it just have the TCS only ( 2007 Roadter ) So in this case what should I get the tires for property and flush.

 

I would buy 4 tires

 

So if I install set of 245/35/19 for front and 275/35/19 for rear do I have to roll the fender or do something else ?

 

I'm running this exact wheel and tire sizes on my Z, and it's lowered slightly with Hotchkis springs... I didn't have to roll any fenders (or gibsons for that matter)...

 

How you think if Im not lower spring ? It will be ok ?

 

There will be a little more wheel gap, but not much. Hotchkis springs lower very slightly... I think 1/2"-3/4" if memory serves me right...