Much. .. man that looks like its at the limit

 

Thanks for that spread sheet Jim.... a big help!! I just ordered a package from Discount tires...TSW Valencia wheels.... front 8x18 et 40 with Nitto NT555 255x35x18 tires....rear 9.5x18 et 40 with Nitto NT555 275x35x18. I already rolled the front fenders (car has OZ Monte Carlo 8x17 et 37 with Toyo R1's 235x45x17 on it at present, Eblach springs lowered the car about 3/4 inch, stock brakes).... from your guide it looks like I may not need to roll the rear fenders, I followed the fitment guide by Flyweight. I'll post my results, it may help someone....this fitment thing can be overwhelming, if you want to avoid mods and mistakes, I want to keep the car as stock as possible. The Discount Tire package included free mounting, balancing and shipping...with rebates came to $1345. Any feedback will be appreciated!

 

Its close to the limit. I also have the tire stretched a little on the wide wheel

I could probably fit a wide 295 on with a little fender pulling. we'll see if I want to go more aggressive in the future, I will probably just stick with wide 285's. Car handles very well, braking is insanely straight and predictable. car feels better with wider wheels. I think it slows down the left and right transition a little, but it feel much more stable doing everything else.

 

At the front of "the Maximum Wheel and Tire Width Fitment Guide for the FD" forum, Flyweight has a good bit of info...from what I read you should be fine with the fronts... can go to a 255x35x18....the rear not sure...you may have to roll the fenders, and the inside will be close too...a 10 inch rim is a better fit, but that 10.5 rim will fit a 275x35x18 and larger tire. You may want to keep the tires close to the stock diameter (25 inches). Read Flyweight's info, it's good stuff!!

 

Just finished putting the 18'"TSW Valencia wheels, Nitto NT555 tires on... I was worried about the fronts...putting a 255x35x18 on an 8x18 wheel is pushing it.... I don't like to stretch a tire, don't like the way it looks, harsh ride and it blends rims if you hit a good bump....this was going the other way....lots of tread and a decent 3.5"sidewall , 25.02" diameter. Tire fits on the rim nice, straight sidewall and looks good.... clears the fender nice (ET 40)...10" of rubber on the ground! The rears are 275x35x18 on a 9.5 rim ET 40... fit nice, 3.78" sidewall 25.5" diameter, 10.8" width... thought I might have to roll the rear fender, it's close, a quick drive over some bumps and it didn't hit! So it looks like this is a good conservative fitment, thanks to Flyweight and Jim's FD wheel and tire fitment chart, an excellent guide!!

 

Would 18" Volk Racing G25 Prism wheels fit on the FD? There isn't much info available online. An estimated weight would also help (they claim 16 lbs in the video).

They're so fancy they might as well etch "steal me" on the rims.

Video:

 

Hi, I hope I am not resurrecting a dead thread but I figure I would recycle it.

I did do some searching and found a cheat sheet but in the cheat sheet, there is NO mention of width of the rim. So I don't feel too comfortable coming to my own conclusion just by reading. I wanted to see what others possibly have done in similar situations.

I have

R: 18x9.5+ 38
F: 18x8 +42

What is the good safe size tires for me? I may lower it about 1 inch max.

Thank you so much for sharing!

 

I would go 235x40x18 front....275x35x18 rear ....that will keep your tire diameter close to stock (25 inches), the front will be 25.4 in, the rear 25.5 in. You may want to roll the fenders, especially the front, if you lower the car you may catch a fender turning into a driveway.

 

You need to know the offset of the wheels. Stock is et50, et40 worked well for me. The range I've seen is 50 to 35.

 

Thanks Greg! So as of stock height do I have to worry about rolling it?

Is there Size where I can safely drive with 1 inCh lowered without rolling the fender?

Thanks a lot.

 

You may be able to get away without rolling the rear depending on the offset of the wheel (50 to 35) but the front is different because of the turn-in-out of the wheel. To be safe I would roll the front because if you hit a driveway and pull a lip it can really mess up the fender, it's not worth the risk. It's an easy job to roll the fender, lots of shops have a special tool that fits on the hub for a clean roll.
I didn't roll my first set of wheels, 17x7.5 offset 38 with 235x40x17 tires (lowered 1inch)...I pulled a lip, what a mess, thank goodness it was before the car got a fresh paint job!! Do it and you won't have to stress it!!

 

I apologize in advance if this question is easily answered, but to be honest I'm still trying to understand wheel fitment overall.

I recently picked up a '94 with Tein Super Streets, stock fenders. I'm just looking to pick up spare wheels to sit the car on over the winter. If they rub at full lock it won't matter. They just need to clear when basically straight, but if they clear in general that'd be better.

I found some OEM 18x8 +30mm 350z wheels with 235/45/18 tires for cheap locally. For rolling around the garage, would these be a problem? I'm mostly concerned about how tall they are.

Thanks.

 

After reading this thread, I'm more confused since before.
I'm looking for a nice aggressive wheel setup for my '96 FD like this one.





For this look I want to buy 18x9.5 +38 for the front and 18x9.5 +30 for the rear with 225/40/18 all around.


The problem is, one say it will fit, some say it doesn't fit.
I mean why is the fitment so difficult with rolled fenders? Why can one guy drive 18x10.5 +25 without rubbing and another guy can only drive 18x9.5 +35 and it rubs? I know that tyres play an important role.
I don't understand that and I won't buy rims only to find out, that they won't fit..

 

Why can one guy drive 18x10.5 +25 without rubbing and another guy can only drive 18x9.5 +35 and it rubs?


Some people drive like Miss Daisy is in the backseat and some people drive like they are trying to win a race.

Also, the amount of camber plays a big role. Every degree of camber will pull the top of the tire in ~5.5mm


For this look I want to buy 18x9.5 +38 for the front and 18x9.5 +30 for the rear with 225/40/18 all around.

This would easily fit on my rolled fender FD.

As a matter of fact it would look battle ship up front and I would have to put 12mm of spacers on or run 2 degrees less camber in front.

The rear would only need 5mm spacer or 1 degree less camber than what I run to look the same as my current set-up.

 

Okay, I understand the fact of the chamber.
What chamber settings you drive and what are the oem settings?

So this means with good rolled fenders I would be able to drive 18x9.5 +30 in the front as well?
You only rolled you're fenders or pulled also a lil bit?

 

psyposa
Okay, I understand the fact of the chamber.
What chamber settings you drive and what are the oem settings?

Stock camber is-

Front
-0.65 to 0.85 (0.10 ideal)

Rear
-1.97 to 0.47 (-1.22 ideal)



My camber is-

Front
-2.4

Rear
-1.2

So this means with good rolled fenders I would be able to drive 18x9.5 +30 in the front as well?


Yes, with a 225/40-18 and -2.4 camber up front.

Each degree of negative camber you take out means the tire is 5.5mm further out at the top so you must run 11mm narrower tire with the same offset.

So, with 0 camber up front like stock that would be 205mm wide tire on the 18x9.5+30 or a 215mm wide tire on 18x9.5 +35.

You only rolled you're fenders or pulled also a lil bit?

Front is rolled with moderate pull. Rear is lightly rolled (lip is not flat against outer sheet metal yet).

 

18*8.5 +38mm with 235 40 18 will i be needing to roll the front fender ? on a half inch drop

 

235/40-18 is 25.4" to 25.5" tall so it is really too tall for up front on the FD.

kensin
18*8.5 +38mm with 235 40 18 will i be needing to roll the front fender ? on a half inch drop


As far as width and offset it depends on how much camber you run.

0 camber and you will probably have to roll the front fender lip under to avoid catching it going into parking lots (turning sharp while going up an incline with 1 wheel 1st).

With -2.4 front camber (maxed) I can tell you from experience it will be fine.

--------

A 225/40-18 or even a 245/35-18 would be a better fit up front with that 18x8.5 +38.

 

Thank you very much for the info!
How affect the front camber on handling?

 

thanks for the information!! so what size do you recommend for the front ? I'm trying to avoid rolling the front fender but still get to have a flush look with out too crazy -camber . down size to 17s? or down size the tire size to 225 40 18?

 

You are trying to do the impossible.

The best thing you could do to try to get a flush look without rolling the fenders is to get a really wide wheel and stretch the tire. This gets the tire tread edge away from the wheel arch lip.

For instance-
You could do 18x10.5 +38 (Enkei PF01 size) with 245/35-18 up front with max front camber (-2.4) and NOT roll the front fender lip.

You could run the same out back or run a 265/35-18 in the rear with no fender lip roll if your camber is ~ -1.4.

The wheels would look like this (from my old set-up), but the tires would be way more stretched than the 265s shown.
https://www.rx7club.com/attachments/...ent-fd-sj1-jpg
https://www.rx7club.com/attachments/...ng-fitment-jpg


---------------------------------

If you want to run the same tire with no camber you would need to run stock 18x10.5 +51 with 245/35-18. (5.5mm each degree camber x 2.4 degrees camber = 13.2mm more offset.)

I don't know any off the shelf wheels that size.

There is a Mustang wheel that is close.
You could use this $160 18x10 +45 with 225/40-18 with low camber (maybe do 1 degree to be safe) and not roll your fender lip.

You could run the same 18x10 +45 with up to a 265 with ~ -1.4 camber in the rear.

It is heavy at 25lbs.
Charcoal AMR Mustang Wheel - 18x10 (15-17 Ecoboost, V6) - Free Shipping

 

psyposa

Thank you very much for the info!
How affect the front camber on handling?

Camber will improve the performance of the car, but wear the inside tire edge more.

The only other downside I can think of is you get some "camber thrust" which is where if you drive over a section of wet pavement with the Left tire while it is dry pavement under the Right tire the car will pull slightly toward the Right.

This is most noticeable over very patched pavement where the grip is constantly changing. You will feel the car subtly pull side to side a tiny bit.

It isn't enough you have to correct the steering, but can be disconcerting if you don't know what "camber thrust" is.


-----------

When you get to really high camber (like the 5 degrees I ran with strut front FC) then your braking starts to suffer especially if you have low profile tires (tread cannot conform to pavement).

 

Ah okay. Really nice to know, thanks for that!

I think the camber thrust will not be the problem. I will drive the car only when the sun is shining
The car isn't on the road before march, so I have enough time to think about the rim size.
Thanks for the great noob explanation!

 

What up ya'll I need some help with tire sizing? I just had my wheels rebuilt. Originally the wheels started out as SSR Long Champ VIP's 18X8 & 18x9 +35 offset front and rear. After the rebuild the wheels are 18x10 + 25 and +12 Front and Rear. The wheels mostly resemble WORK VSXX'S. I was considering 265/35/r18 or 275/35/r18 in the Rear and 245/40/r18. Let me know what you would suggest I'm looking for a meaty set up. Thanks!

 

Wow I haven't seen a Longchamp wheel in a long time that brings back memories! The wheel looks good you did a good job bringing her back to life. But you need to roll the fenders those offsets are too aggressive. Also 245/40 18 for the front is too tall at almost an inch taller than the stock tire diameter. Go with 245/35 18 that's what most people seem to do especially when trying to fit a wide wheel. Try 265/35 18 in the rear it's about 0.25" shorter than 275/35 and closer to stock numbers.