Wow, well good luck with that. Sounds like the new motor is gonna be a beast. Not sure if the battery in the trunk is gonna make a big difference but every lil thing counts! And to have 2 "toys" of that kinda caliber must be REAL nice! I got my boosted G and then get into my pops 98 nissan maxima and its like wtf.... am i moving in slow motion or something?!

 

Stock the G35 has a 52F/48R weight ratio, or somewhere thereabouts. The TT system adds about 100 lb to the front of the car, which really throws off the balance, and thus the handling on road courses. The stock battery is somewhere around 30 lb I think, so moving it to the rear should result offset this quite a bit (-30lb up front and +30 lb in the rear). That reduces the weight difference by 60 lb or so (ignoring the weight of the added cables). Of course, I can run a low weight battery (e.g., Optima) up front, but that will only take 15-20 lb off of the front, and not do anything to the rear. I may go with an Optima battery in the trunk and look for further weight reductions up front.

 

No way.... my stock battery weighs 30lbs?!?!?! Wow... gonna start looking into shedding weight then!

 

Deciding on...

Toyo Proxes R888 265/30/19 front and 295/30/19 rear
or
Toyo Proxes T1R 255/35/19 front and 285/35/19 rear
or
Hankook Ventus V12 255/35/19 front and 285/35/19 rear
or
Nito Invo 255/35/19 front and 285/35/19 rear

Any suggestions? I really want to give the R888's a shot, but I'm worried about wheel gap due to the smaller sidewall. I guess that can be corrected by lowering the car?

 

Alberto, are you fenders rolled or anything to allow for clearance up front? My front tires are feathered so bad that discount tire won't balance them. So in the thought of trying to save a little bit of cash and get a better rear tire, I was thinking of moving my 275/35 BFG KDW's currently in the rear to the front, and ordering some 295/35 Nitto NT05's for the back.

I just wanna make sure that setup will be fine for the VDC (sounds like it is for your car), and also I don't want any fitment issues...my suspension is stock and my fenders are not rolled. I'll probably get a little bit of buldge from the rims because they're only 8.5" front 9.5" back, but that I don't mind that.

 

I have T1R's up front I like them. Initial turn is is softer compared to KDW's or anything from Bridgestone/Michelin but they settle in quickly and bite hard for the money. When near the limit they let you know, unlike the KDW's IMO which on both my suspension setups wouldnt howl or screech they would just let go.

You could do the R888's but then you would have to lower to get the look right, and possibly re-align the car.

SC Luciano-you canot roll the front fenders on the Z. My rears are rolled (not even that tight) to accomodate the larger rubber. If your offsets are +22 - +30 you can run a 275 easy up front.

Doing the 275/295 combo on a 8.5/9.5" might be too much pudge, if you're cool with it then do it, VDC will love it.

I know for a fact a +30 18X10.5" rim will hold a 315 with rolled fenders out back.

 

Wait, I'm a little confused by your first 2 sentences. I presume you mean you CAN roll the fenders on the Z?

I can't remember because I got my rims a few years ago, but it looks like the offset on my fronts are probably 20...I know you said 22-30 will fit a 275 up front, I'm wondering how much that difference will make for rubbing? Perhaps I just need a small spacer up front to make it work.

What about a 245/45 up front and 295/45 out back? Just a thought since I have some 245/45 tires at home doing nothing...

 

You cannot roll the front Z fenders.

You can roll the rears.

+20 would likely fit a 275/35 19 with no issues on an 8.5" wheel. That would be almost identical to my front 9.5" +22 setup.

245 front/295 back would make VDC go nuts and IMO is too much stagger.

You would be best off IMO with a 255/285/35 19 combo for clearance and without excessive pudge. That setup handled extremely well in my setup.

 

Thanks for the clairification, I went a re-read your sentence and realized I was just being a tard.

FWIW my rims are 18", not 19"...but that likely wouldn't matter as it just means I have more sidewall than on a 19" rim, right?

I usually drive with VDC off unless I get caught in the rain...I just don't want it to kick on for no reason like if your alignment is off and you get the perma slip/vdc lights until you have it aligned and the rack zero'd out.

I'm also trying to be conservative with my spending money, as it all got dumped on my build a couple months back. Since I already have 275/35 rears, I figured moving those to the front and getting a 295/35 for the back would a) be a better rear tire for the extra (hopefully) power I'm about to get and b) save money on buying 2 more tires.

I talked to the guys at Discount Tire, and they're going to do a test fit for me, hopefully this works out in my favor.

 

Didnt know you had 18's, you may still want to pop the sizes into a calculator and make sure the diameter is at least 26". My rears are now 27.2" IIRC, it essentially aids the 3.3FD in making the gears longer and helping with traction.

 

looks like a 275/35/18 has an overall diameter of 25.58, and 295/35/18 is 26.13.

 

25.XX anything is IMO too small.

My VDC is happy with whatever the stagger is between either 255/285/35 and 275/295/35 19.

 

275/35/18 fits just fine up front (on a G35 at least) with a 9.5" rim +20 offset.

full lock, no rubbing with fender even with top of the sidewall...

 

actually i have 22 offset but running spacers and i dont wanna take them off. I decided to stick with 245 and 275 and rubbing is lot less than before. I believe its because i took the screw that is inside the fender off. I only rub minial when going into driveways.

 

Im runnin 225/35/20s up front n 255/35/20s rear with +7 n +0 offsets
Makes for a challenge trying to grip! hjahahaa

Ohh yea and -3.2 camber..