Cool.. Im willing to do some driving to go to some driving schools.. if anyone is intrested.. maybe a few of us could go at the same time to the same school?!?

Im going to the mazdarevitup event.. who else is going? Group15..

..pestilence..

 

If you want to over come the VDC/wheel stagger problem all you need is the VDC box out of a coup or a 350Z. Its a plug & play issue. That should solve your rpoblem right there. Now you can put what you want just keep the ratio the same as the coup. Don't go 315s in the rear and 255 in the front. It would look nice though. The box trick is from INissan/nfiniti themselves. I had my service tech call the tech at Nissan-they said sure that'll work.

03.5 Sedan/B. Silver/Prem/Winter/Aero/Tint/Rims
69 Chevelle Hard Top BB/4.11's/Posi

 

When you say offset, you mean different width size for the rear rims then the front rims or are you talking about the distance from the centerline of the wheel to the wheel bolt?

If your just talking about different rim width sizes for the front and rear then Sportline and SSR make those rims for the Sedan.

Ivory Pearl - 6MT - Sedan

 

Hey, that's good news on the VDC control box. Say, do you happen to know where the speed sensor is? Is it on the front or rear axle? Which axle needs to stay close to the stock diameter to keep the speedometer/Nav system happy?

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On offset, we're referring to the outer diameter of the tire, not the width. The width of the tire, or the size of the rim, makes no difference, but a tire with a bigger outer diameter goes farther in one revolution than a tire with a smaller diameter.

The outer diameter is: (tire width) * (aspect ratio) * 2 + (wheel diameter)
The stock 17" tires on the sedan are 215/55R17. That's 215mm wide, 55% aspect ratio, 17" wheel (17*25.4 = 431.8mm)
215 * 0.55 * 2 + (431.8) = 668.3mm (26.31")

A common Plus Zero size is 235/50R17
235 * 0.50 * 2 + (431.8) = 666.8mm (26.25") which is very close

The coupe on 17" rims uses 225/50R17 front and 235/50R17 rear. Looking above, we already know the rear is a 26.25" diameter.
225 * 0.50 * 2 + (431.8) = 656.8 (25.86") which is about a 1.5% difference in the diameter of the front to rear tires. This means that every time the front tire rolls 100 times around, the rear tire rolls around 101-1/2 times. This is actually enough of a difference for the Sedan's VDC system to detect what it thinks is wheel slippage. The Coupe's VDC system is programmed to handle this much as normal.

The speedometer and such measures distance and mph by counting revolutions of the axle. If you change the size of the tire too much, it throws off that calculation, causing your speedometer to be incorrect leading to other things, such as higher (or lower) mileage accumulating on the odometer or a Nav system that has trouble keeping track of your current location.

So, it's possible to run different width tires front to rear and keep the diameter really close. Or you can run them offset, with a smaller front tire.

Whew, I feel winded.

2003.5 G35 Sedan Desert Platinum/Graphite Premium/Sport/Aero/Nav/Winter