Will I be able to fit these 20" rims/tires on my 2005 6MT coupe?

[batman0505]

I've done a lot of searching and used the tire size calculator, but am still not sure about this. My car came stock with 19's (225/40/19 on the fronts, and 245/40/19 on the rears) in a staggered set up.

The wheels I am looking at are 20" x 8.5" +35mm offset with 5 x 114.3 lug pattern. Tires are 235/35 R20 Nitto NT555s

Will these fit for sure?? The tire calculator says there is less than a 2% difference, so I am fairly confident they will be okay, but wanted to check in with you guys first.

Also, I currently have the car lowered with an eibach pro kit...the car rides too low and bottoms out too much, so I will likely raise it back up and hope that these 20's fill in the wheel wells well. What do you guys think of that, will it just look ridiculous?

Greatly appreciate your feedback.

[biggie]

Should fit without a problem.

But to me (opinion) you are getting a higher offset barely wider wheel with narrower tire (in rear). That ain't too good. Reason for not going staggered as well?

Don't know the wheels you are getting, but willing to bet the 19" Rays are better than the ones you are looking at.

But it is up to you.

[RED_DET]

I would suggest against this as it will look silly lowered or normal ride height. Offsets are too weak for 8.5" wheel and rubber is too narrow.

[batman0505]

Thank you, I really appreciate the feedback.

This is a set that I am buying second hand.

I am probably being completely retarded here, but what do you guys mean when you say the offsets are too weak?? At 35mm offset...isn't it more offset than the stock 30mm (front) and 33mm (rear)??

As well, what do you think then if I was to simply replace the rear rubber with wider tires (i'm thinking somewhere between 245/35/20 to 265/35/20, any suggestions?)...does that make sense to do, or is that not a possibility for me? If this is a possibility, is there a better rear rubber size that you would recommend putting onto these rims (20 x 8.5 w/ +35mm offset)??
Modified by batman0505 at 8:38 AM 8/21/2009

[RED_DET]

most get confused with offset, the lower the number in this case the more the wheel is pushed outward, the higher the number the more the wheel is pushed in. so a 35mm offset will be 2mm further in than the rears and 1mm further out than the fronts only because they are a .5" wider. if they are a must, run a wider tire and run spacers.

235/35/20 is fine, for a wider tire you could run 255/35 or 245/35/20 all the way around.

for a staggered look, 235/35/20 up front and 255/35/20 in the rear. then add some 10-15mm hubcentric spacers with built in studs and the look will change dramatically.

[batman0505]

Would these spacers be 100% required? or optional...?

Where can i get these spacers from?? I will likely try to keep the staggered setup, but I don't want to have to roll my fenders or anything...

[RED_DET]

spacers are optional, no fender rolling will be required with those offsets or even adding spacers to the offsets. search for kics, h&r, ichiba, they all make spacers.

[batman0505]

Greatly appreciate your help!

I'm going to choose betwee the H&R or Ichiba's...is there any real difference? As well, I noticed that the Ichiba's come in a "Version 1" and "Version 2"...but the site doesn't explain what the differences are...do you know? I will go with the following set-up:

235/35/20 on the front rims255/35/20 on the rear rims with 15mm spacers (whichever brand you recommend).

Just to make sure, those tire sizes will fit on these rims okay (20 x 8.5, +35mm)? For some reason I am trying to wrap my head around the fact that you can just put any width tire the same rim and have it fit well...

If I would like to consider lowering my car again, I don't think I would want to do so as aggresively as the eibach pro kits do (1.5 inches in the front, 1.2 inches in the rear). Is there a different set of springs that would achieve maybe half of this lowering height? The roads are bad where I live, and have raped the plastic shield under my car as well as scraped the hell out of my injen exhaust setup.

Thanks in advance!

[RED_DET]

Ichiba's version I require you to replace your studs with the longer ones supplied. Version II have built in studs, so all you do is bolt them on your studs and then bolt the wheels on the spacers. I would recommend the version II just for ease of use. I would run @ least a 10mm spacer up front as well or even a 15 along with the 15 in the back.

those tires sizes will work just fine. the addition of the spacer to the wheels will push them out just enough to give them a flush look, which will look 100x better.

i would look into tein h techs for the 350z. they will give an inch drop on the g35 coupe and spring rates similar to the oem ones.

[RED_DET]

tein h tech specs

Tein H.Tech Springs

Height Specifications

350Z: (Front: -0.3 in; Rear: -0.2 in) G35 Coupe: (Front: -0.6 in; Rear: -0.3 in) G35 Sedan: (Front: -1.4 in; Rear: -0.7 in)

Spring rates:

350Z: (Front: 358 lbs/in; Rear: 375 lbs/in) G35 Coupe: (Front: 325 lbs/in; Rear: 263 lbs/in) G35 Sedan: (Front: 325 lbs/in; Rear: 263 lbs/in)

[batman0505]

Okay, I will go with what you have suggested. However, I am thinking of spacing the rears out a little more....what would the max spacer that I could use be before it would require fender rolling? 20mm, 25mm?

As well, i'll be running winter tires/rims...going with:245/45/18's all the way around

When I have these on, does it matter whether I leave the spacers on or off? I was thinking of just putting them on without the spacers, and then installing the spacers and 20's next spring.

Your response time is insane...completely made my day, thank you!

[RED_DET]

just for reference sake. most of the coupe guys that go after market wheels run 20mm offset on wheels that are 9.5-10.5 wide. so you would be safe to run 20mm spacer on a 8.5" that has a 35mm offset. that would put the offset of the wheel @ 15mm in the rear without fender rolling and then run a 15mm spacer up front, which would make that wheel a 20mm offset. just take the spacers off when you run the winter wheels or leave them on, if there isn't much difference between offsets of the 20's.

glad i could help.

[RED_DET]

another tool that is helpful.

http://www.1010tires.com/WheelOffsetCalculator.asp

[Sentientbydesign]

Just a word of warning. The 20s will make your car slower to acclerate and slower to brake.

Another possible, but unlikely issue is brake clearance. I doubt the front calipers are large enough to cause a problem, but it might be worth doing a test fit before buying.

[RED_DET]

what the hell was the purpose of that post?