MACS

iTrader: (3)

Enkei RPF1's in 18 x 8.5 +30. I dropped about 13 pounds per corner going with these...



I went with 245/45/18 Hankook V12's.



The butt dyno is pleased...

blnewt

iTrader: (13)

Put those 4 corners on a serious diet, very nice indeed. Black window trim would finish it off nicely. Nice job!

sneakers

iTrader: (1)

aaah finally Macs, glad your butt like those new wheels. Now you got me seriously thinking about these RPF1s. Hows the clearance with the bbk?

MACS

iTrader: (3)

I've been seriously thinking about blacking all the chrome.

Cleared it, no problem at all. These are a +30 offset, whereas the Vossens were +32. Since these are only 8.5 wide instead of 9, they sit almost exactly the same. Very flush with the well. I need to drop the fronts just a touch... easy fix (couple twists on each side).

antirice

iTrader: (2)

Hey Macs, how much do the OEM wheels weight?

I think I might just go with the G35 OEM rays instead of the G37 coupe rims. G37 rims definitely looks better on our car but they are significantly heavier than the rays. I heard shedding 5 lbs of rotational weight is like shedding 40 lbs of actual weight on the car.

MACS

iTrader: (3)

The stock wheels on the LE sedan were 26 front and 27+ in the back.

I'm not certain of the actual sprung v unsprung weight formula, but the Enkei website says 1 pound is equal to 20.

ashmostro

iTrader: (3)

Niiiice. What performance differences can you confidently say you feel?

MalbecG37S

Very nice. 18.3lbs per wheel? Looks great.

Did you do 18x8.5 all around?

Edit: Out of curiosity, why Hankook V12's? Wouldn't Michelin PSS drop another 3lbs or so?

MACS

iTrader: (3)

Acceleration from a dead stop is improved. Acceleration at freeway speeds is also improved. I just filled the tank yeterday, so I'll get back to you on the MPG, but I am expecting an improvement.

I did keep the same size all around to facilitate rotation.

I went with the Hankooks because A: I had them on the car before and loved them aside from the fact they wore out too fast (16k miles - done) B: They are much less expensive than the Michelin PSS, and rated #2 behind the PSS in a test that was done by one of the car mags (can't remember which one).

Edit: After doing a little research, the PSS might be worth the extra coin, as they are 3 lbs lighter and have a 30k treadlife warranty, whereas the Hankook's have nada. If I go through these in 16k again, I WILL switch to the PSS.

MACS

iTrader: (3)

Found it: It was Car and Driver. Here is the link...
Tire Test: Nine Affordable Summer Tires Take On the Michelin PS2 Comparison Tests - Page 10 - Car and Driver

dkmura

I also use the Enkei RPF-1 in NASA and SCCA road racing. It's a great lightweight alloy wheel, but needs a hub spacer to get it to fit properly. You don't want the lugs to supply both the clamping force and load bearing properties. I assume the OP used some aftermarket 3 mm hub rings to get the RPF-1 to work properly on the G37.

MACS

iTrader: (3)

Yes, hub rings came with the wheels when I ordered them. So did the lug nuts and socket.

Rochester

iTrader: (9)

That's a 3 year old review that compared tires against the old Michelin Pilot PS2, not the contemporary Pilot Super Sports (PSS). Similar tires, but still different models.

Just saying.

I respect the priority of lightweight rims... good for you. Those Enkie's seem to have a good reputation. I just wish they were more attractive. At least your BBK makes up for it in the looks department.

MACS

iTrader: (3)

Ahhh, didn't realize the article was so dated. Still... a pretty impressive showing by the V12.

Like I said, the PSS have a 30k warranty when most summer tires don't. That may be worth the premium in itself.

ashmostro

iTrader: (3)

What about bump compliance and general handling... Notice anything there?