3.9 Gears or 4.083 gears - rear Differentials

[Jacko3]

I am learning a great deal from all of you. You guys rock!

[gwoods]

Now go buy some 23" tall tires (245/35/17) and some 17x9 rims and you will feel the equivalant of 4.56 gears. If you don't like it its as easy as swapping tires.

[Jacko3]

Are you sure this won't affect the VDC?

[TeflonG35]

Turn VDC off and only use it on the track

[Sentientbydesign]

Turn VDC off and only use it on the track

Exactly. The VDC being off should negate the problem.

[gwoods]

Exactly. The VDC being off should negate the problem.

how to drive your G35

#1> push little button on the door handle to unlock, open door and climb insides

#2> step on the brake pedal and push the start button, put on seat belt while car is starting

#3> turn off VDC, move car into gear

[Tampa G35 Sedan 6MT]

What would the gearing be with 245 40 18's?

I had them on my g before and still have the set in the garage?

They did make the car quite a bit faster?

DJ

[gwoods]

You would need to know the difference in tire height to calculate the change to your final drive ratio.

[Beancooker]

Also bear in mind that if you put some blingin' chrome 20's on your car, the weight of the wheels will cause a decrease in accelleration.

More rotating mass=slower accelleration.

That is why wheels like Gram Lites and Motegi Trac Lites make such a big difference. Knocking off 10-12 pounds per wheel will make the car feel a lot faster when you accellerate.

[Jacko3]

Beano:

Nice info! But can these light wheels really take the stress of the car and are they more or less expensive than regular wheels? Any pictures of gram lites or Mortegi Trac lites ?

[Sentientbydesign]

Jacko,

I think the Gram lites are capable of daily driving. The Motegis worry me a little. Tracks don't have potholes!

There are actually quite a few forged rims that offer weight/mass benefits. Simply stepping down to an 18" forged rim from a 19" forged rim should save a couple of pounds. Couple that with the decreased moment of intertia (less mass + a shorter torque arm) and you have wheels that should move with less effort.

[Beancooker]

Both Gram and Motegi will do fine for daily driving. Just avoid excessive potholes.

Weds Sport is also another great lightweight wheel.

Cost is a matter of perspective. They are more expensive than cheap wheels, but less expensive than Lexani 22".

Out of the three, I personally would buy the Weds Sport. They are a little less expensive, and a great wheel. Weds are made by Rays as well.

Motegi

Gram

Weds Sport

[Jacko3]

Nate:

Thanks!

[Jacko3]

Beano:

As always, thanks for your great advice and direction. Now, I have to gather all the money I will need to get some of these things done. Seems like removing backseat of G-35 Coupe, changing differential gears, using lighter wheels, and going FI, maybe the way to go.

[C-Kwik]

Get this

With the 23" tall tires if VDC is on the car WILL NOT move. the tire pressure sensor light stays on, the ABS light stays on and the BRAKE light stays on. Turn VDC off and the car appears to run okay but all those lights stay on.

I think having the 23" tires all the time would ruin the transmission for sure.

The tire pressure light is fairly obvious. Unless you have the sensors hooked up to it, it won't register.

The VDC is an issue that is likely the result of having a front tire that is taller than your rear tires. You swap to a smaller tire in the rear and it will detect that your rear tires are turning much faster than the fronts (slip) and will cut back the throttle accordingly. The brake and ABS lights are likely for the same reasons.

As for using lower rear gears on an automatic, it really shouldn't cause any failures of any kind. The only possible scenratio might be that the transmission control units programming may not match the load vs speed curve as well, but my initial thought is that it won't be much of a problem, if at all.

[gwoods]

The tire pressure light is fairly obvious. Unless you have the sensors hooked up to it, it won't register.

The VDC is an issue that is likely the result of having a front tire that is taller than your rear tires. You swap to a smaller tire in the rear and it will detect that your rear tires are turning much faster than the fronts (slip) and will cut back the throttle accordingly. The brake and ABS lights are likely for the same reasons.

As for using lower rear gears on an automatic, it really shouldn't cause any failures of any kind. The only possible scenratio might be that the transmission control units programming may not match the load vs speed curve as well, but my initial thought is that it won't be much of a problem, if at all.

Yeah your probably right

I do think the tiny tires would wear the transmission and diff quicker then taller tires but I can't explain why

[C-Kwik]

Yeah your probably right

I do think the tiny tires would wear the transmission and diff quicker then taller tires but I can't explain why

I'd say its a possibility, but any wear would likely be negligible as the lower gearing would produce less load and negate some of the wear that might occur due to more transmission "mileage."

[TeflonG35]

I really Appreciate the advise. Would the people at everythingg35.com know why they posted that info? Or would it just be the relay of info from another site?

And those weds sports are sexy.

[AddictionG35]

You know, I learned an awful lot from this thread, I nominate it to go on the FAQ list. What do y'all think?

[Sentientbydesign]

How about you extract the relevent info and turn it into an article. Then I'll post it in the Infiniti Articles and you can have a custom title?

[AddictionG35]

LOL Joe already told me I could have a custom title for posting info on Recalls and TSB's and I am at a complete loss. I have no idea what I want cause I've never thought about it. But I have no problem with that at all. I think there was a lot of good stuff in here. It IS getting late here so I'll do it tomorrow, I'm about to head to bed. Going on 10:30 pm here in Germany.

[joe603]

How about you extract the relevent info and turn it into an article. Then I'll post it in the Infiniti Articles and you can have a custom title?

How about you do that...MR. Articles manager

[Sentientbydesign]

How about you do that...MR. Articles manager

I was told that I wasn't supposed to write all of the articles, just find and edit them

I've got too much on my plate right now to extract that data. Sorry