PasswordJDM.com. I ordered mine from there.

 

autozone sells the basic chrome tuner lug nut kits for 30 bucks. i have some ebay tuner lug nuts that i paid 26 bucks for and they have worked fine..

 

Mine are basic chrome ones from amazon and the chrome cracked away and starts to rust... I will try the black lock set on password jdm. They look promising. Thanks

 

That's what I have.

 

These are the xxr's. no spacer on right now. this is 18x10.5 like +25 or something im not sure. the rear needs a spacer hard and the front could probably survive with just a 5mm slide on one. Tires are 235 40

 

Okay, so I just picked up a staggered set of XXR 530's.
The fronts are 18x8.75+20 and the rears are 18x9.75 +20
My Z is also lowered on Tein S-Tech lowering springs.

My question is, what's the widest tires I can run without having the sidewall "bulging" I want to keep it as flat as possible.

I was thinking about 275/40/18 in the rears and 245/40/18 in the front, the guy at Just Tires wasn't too knowledgeable about how the tire would sit so I came here. I searched and didn't find something that helped me, so someones input would be good.

Thanks!

 

You could do 295/35/18 in rear.A 255/40/18 would also work in the front.
Of course,sizes per brand are a factor.How much is you car lowered?

 

I got those the other day in gloss black they look real nice I still haven't mounted them but for the price they are awesome.
Got any pics of them mounted on your car?

 

Would a 285 sit nicely on the rim?

Umm, it's like an inch lower all around.

 

Oh, and do I need hub centric rings to fit my wheels on my Z?

 

Return the front wheels and get another pair of 9.75's, better yet get some better wheels. Then run a 265/35 front and 285/35 rear.

 

Yes you need then

 

I am running 18x9.75 square with 245/45/18's , looking at getting 275/35 /18 for the rear over the winter.

 

If I had the budget for better wheels, I would have obviously. Have other more important priorities to spend money on.

I prefer the staggered set up, but thank you for the info on the sizes =)

 

Requesting pics of 526 18x10.5 square. Tire specs?

 

Can anybody verify if XXR 521 or 531 will clear oem brembo brakes?

 

dont know for sure but i have the xxr 531's on my Z. not brembo but it clears them alot. I've got 18x9.5 in front and 18x11 in rear with +20 offset on all 4. No spacers. I'll try to get pics up.

 

 

My 521's should fit brembos. That is for the 18x8.5 +25 in the front, I have tons of room but I also have standard brakes.. Not sure about the 10" wide, which is the way to go, you know that...

 

Finally somebody with the xxr 531's...I got mines the other day but haven't yet mounted them and I had not found a Z with them. Your Z looks awesome btw...what tire size u running?