Here is my M45 with the Volk Te37 wheels (bronze, silver and white are also available but silver is a special order -- takes longer).
They are 19x8.5 +29 offset in the front (weigh about 19 pounds) and 19x9.5 +43 offset in the rear (about 20 pounds). As reference, the original wheels which are 18x7.5 +35 offset weigh 26 pounds on the same bathroom scale.
The old wheels are cast aluminum, I believe. The Volk TE37's are forged all aluminum monoblocks. Forging is currently the best manufacturing technique for wheels as it produces a very lightweight wheel that is also very strong and resists bending. It is also very expensive. The wheels were $2350 including shipping (plus tax) for all four. The center caps are extra ($35 each).
I got them from speedstyles (http://www.speedstyles.com
) in Charlotte, NC.
I got McGard *tuner* wheel locks to protect them (http://www.mcgard.com/automotive/new_prod.asp
The tires are:Pirelli P-Zero Asymmetrico 245/40 19 front (24 pounds), 275/35 19 rear (27 pounds). The original 235/45 18's were about 25 pounds each. The tires were about $310 each for the 275's and $269 each for the 245's.
For some reason, the original wheel/tire combo (the spare tire) came out to 54 pounds. But (without the valve/stem/tire pressure sensor and weights) the wheels were 26 and the tires 25 separately (51 pounds total). I'm not sure why that is.
The rear fender lips had to be rolled so that they wouldn't rub against the tire sidewalls when the tire goes up into its wheel well. After that was done, there was no rubbing.
I've settled on 35 psi all around for now.
The tire pressure sensor meters on the original wheels fit on these wheels so I can see my tire pressures on the monitor. There was nothing special that needed to be done. Just use these in place of the wheel's own valve stems (the tire pressure sensors are the valve stems on the original wheels).
The car now rides on Eibach springs. As of the date of the pic, the springs had not yet fully settled (taken the day after installation). I've had them on for 10 days now and they are slightly lower but expect them to settle just a little more.
The ride with the new springs (and original struts) is definitely firmer but far from harsh. On most rough surfaces, you wouldn't even be able to tell they are different from the very smooth original equipment. You definitely feel them though the first time you take a turn. You will KNOW that you could have taken that curve much faster...there is almost no sway. You do have to slow down a little more for speed bumps (before I could just run right over them at 5-10 mph with little guilt, now it's a little stiff to do that) .
I would definitely do it again though as the safety and feeling of sure footedness of the car has obviously increased.
Before, I felt as though I could only approach about 7/10ths of the cars full performance potential. It seemed to wallow quite a bit and I did not feel comfortable using all that power in reserve. Now the wallow is nearly gone and there is very little squat when I either gun the throttle or hit the brakes. I can take it up to 9/10ths of it's potential now. Still waiting for Eibach to put out anti-roll bars for this car to hopefully close that gap even further.
The installation of the springs, tires on the new wheels along with the tire pressure sensors and the lip rolling was about $1000 in labor. Well worth it though as the installer (Cosentino Hi Lines, Charlotte, NC) did a superb job rolling the lips.
There is a little bit of negative camber on the rears now (negative camber is when the top of the wheel leans inward and the bottom outward). I will take it in for an alignment to the same installer after another 2-3 weeks to be sure that the springs have completely settled.
I don't have a digital camera yet, but will post pics as soon as I get one. Most people who see the car are amazed at the width of the rear tires. One person said they looked the size of a Corvette's rear tires.
I would definitely recommend doing this if you own an M45. The handling is much, much better now.
If the G35 is a gazelle on its feet, then I would have likened my M45 to a hippo before these mods (fast and powerful but not very nimble). Now I would liken it to a giraffe -- big yet graceful and very fast.
The best description of this car now (and I'm absolutely serious) is that it is just like the Porsche 928 S4 of old but with 4 doors.
I will post pics when I get a digital camera. For now, you can get an idea what the wheels look like on a 350z and what 19" wheels look like on the M45 from the bottom of this thread:http://www.nissaninfiniticlub....forum