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Diameter diff Front and Rear

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Old 04-06-04, 05:18 PM
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Question Diameter diff Front and Rear

Is it posible for FD?

I know everything is, but how bad is the drawback?
I'm thinking 17 in front and 18 in rear.
Polly 8.5 or 9 in front
But, 9.5 rear for sure cus I already have them.

I'm thinking about the Spaco NT-R black just like another forum member. 17x9 only weight 17 something.

I'm thinking about the tire wall different. They will be much different if I were to go w/ the set up. Taller tire wall = softer ride => rear will come out even sooner now.

Tell me what you think.

PS. rynberg, post your opinion on your new set of wheels now. I'd like to know

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Old 04-06-04, 08:50 PM
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Don't see the point on an fd. On a car like the c5 vette, the front is skinny and the rear has a big but, so it looks ok with larger wheels in back. The fd is pretty well proportioned so i would keep the wheel diameter equal
Old 04-06-04, 09:03 PM
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Re: Diameter diff Front and Rear

Originally posted by POM HB
PS. rynberg, post your opinion on your new set of wheels now. I'd like to know

POM HB
Haha, I haven't gotten a chance to really drive it much since I got an a new alignment. My wife just bought a nice digital camera (finally), so it will be easier for me to take pics now -- I used to do it OLD SCHOOL -- snap photo with 35mm, develop film, try to scan it, hit scanner with hammer, scan it, resize it, and then post it!

Seriously though, unless you are dead set on a wheel model that requires 17 and 18 to get the exact widths/offsets you want, I don't see the point to mixing diameters either. The car WILL oversteer a hair more, but that's usually offset by the typically wider tires in the back.
Old 04-06-04, 11:07 PM
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Actually, I think there is a good reason.

Check how many threads feature stories from FD owners complaining of rubbing up front, either on the fender lips of liners. The front wheel wells on the car are very small. Rubbing is practically a fact of life with tires of over 25"diameter. Ideally, you'd want to run something like a 245/40/17 or 255/40/17 up front to keep the diameter small... while mainaining a sidewall thats at least reasonable for ride quallity. Your option for 18" is either a 245/35 or 255/35... rare sizes with tiny sidewalls.

The rear wells are large though, and look great w/ 18" wheels... and alot of the performance rubber out there isn't coming in wide 17" sizes anymore. Pairing a 275/35/18 rear with a 255/40/17 front, or a 265/35/18 rear with a 245/40 front isn't such a bad idea... you can at least preserve some ride quality and sidewall flex for traction....
Old 04-06-04, 11:50 PM
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Thanks everyone. It's just that I 'might' have to buy new wheels and w/ my financial situation now and the look of that Spaco wheels, I thus consider 17's. (NT-R doesn't come in 18)

I was thinking about Advan 3 spoke blanck and red(old school ones)Check the price at local shop, they are still over 600 a peice. Hell, if I'm gonna spend that much money, I'd go for BBS or OZ cuz they ar ethe ****.
Old 04-07-04, 01:45 PM
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ptrhahn, thanks for the advice and opinion.

rynberg, you just got da digi camera? Ha ha ha, I don't even have a camera! Actually I have one old school one, but thinking about taking picture, develop them, and scan them, I'd say fack it. Too much work. I'll save some money for digi cam, but all my saved money always go to my seven.
Old 04-07-04, 02:04 PM
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I have some pics of my 17/18 setup in this thread. I really like it.

https://www.rx7club.com/showthread.p...hreadid=290179
Old 04-08-04, 07:16 PM
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Re: Re: Diameter diff Front and Rear

Originally posted by rynberg
Seriously though, unless you are dead set on a wheel model that requires 17 and 18 to get the exact widths/offsets you want, I don't see the point to mixing diameters either. The car WILL oversteer a hair more, but that's usually offset by the typically wider tires in the back.

So what would you recommend for a proper set-up up front for a 20d Fd w/335-30-18 in back w/Pettit flares? When I finally get my swap completed, I want to be able to neutralize the handling as much as possible. Originally I was planning on 285/18 in front w/2.5 coil-overs (Maxcoopers Set-up) but if a 17 inch wheel will yield better traction and less understeer, then I'm all for it.

Last edited by t-von; 04-08-04 at 07:19 PM.
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