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-   -   Maximum Wheel and Tire Width Fitment Guide for the FD (https://www.rx7club.com/suspension-wheels-tires-brakes-20/maximum-wheel-tire-width-fitment-guide-fd-892901/)

Josh18_2k 03-09-11 12:34 AM

usable tread on a v710 is all the way to the corner. they're designed to roll over the rounded part

thewird 03-09-11 12:46 AM


Originally Posted by fd_neal (Post 10507762)
For reference, both mounted on a 10" rim

295/35/17 Hoosier A6 corded
overall height 25.25"
overall width 11.625"
tread width 11.25"
"useable tread" 10.75"

275/40/17 Kumho V710 Full tread
overall height 25.25"
overall width 11.125"
tread width 10.75"
"useable tread" 10.5"

I call the useable tread the flat face of the tire.
In the pics the fenders are stock and i pulled the shock to give free motion of the suspension, pics are at what would be close to full compression.

What is the offset on your rims?

thewird

fd_neal 03-09-11 09:01 AM

3 Attachment(s)

Originally Posted by thewird (Post 10508205)
What is the offset on your rims?

thewird

offset is +52



Originally Posted by Josh18_2k (Post 10508197)
usable tread on a v710 is all the way to the corner. they're designed to roll over the rounded part

This is true, and true of the Hoosiers as well, My experiance on the road course is that the shoulders dont see the same use in an FD the way they do in a mac strut car. This has lots to do with car setup, wheel and tire width, even driving style, probably should have left "useable tread" out because its pretty subjective.


And a few more pics to show the fit, hoosier is out back and kumho is on the front. For the first set of tires this season I will be running the kumho, MIGHT run a set of R6's for the last half of the season.

jose-rs1 03-18-11 11:20 AM

Great Thread,

I'm looking to change my wheels to 17x9 enkei rpf1
I was wondering if +35 offset front and +22 offset rear would work?

Its an FD race car all fenders are rolled.

In the class I run we use 225-45-17.

Do you think I'll have clearance problems?

thanks
Jose P.

jose-rs1 03-18-11 11:35 AM


Originally Posted by jose-rs1 (Post 10523752)
Great Thread,

I'm looking to change my wheels to 17x9 enkei rpf1
I was wondering if +35 offset front and +22 offset rear would work?

Its an FD race car all fenders are rolled.

In the class I run we use 225-45-17.

Do you think I'll have clearance problems?

thanks
Jose P.

I currently have enkei 17x 8 rpf1 with +35 offset allaround
but I'm using 3/4'' spacers in the front and 1'' in the rear.

so if my math is correct I shouldn't have a prob, but I want to confirm

jkstill 10-10-11 11:51 AM

Kind of late to the party here, not sure how I missed this thread earlier.

Someone asked if 285/30/18 on a 18x9.5 +38 wheel will fit the front of an FD.

The short answer is 'Yes'. That's what I was running until very recently.

Kumho 285/30/18 V710's on Enkei RPF1 18x9.5 +38

The only mods required are coilovers and rolling the fender lip.

My new setup is Forgestar 18x10 +50 with Hoosier A6 285/30/18

Front's fit without issue. I might add that the Hoosiers are about .75 inch wider than the Kumho's.

Rears required aftermarket trailing arms, and 5 lb sledge hammer applied to the inside of the fender well about 6 inches up from the bottom, just above the trailing arm. The exact area where the .5" hole in the fender well is.

riwanika 01-24-12 03:12 PM

This really helped, thanks for the great post I will be getting the 17x8.5/17x9.5 setup in the spring

oeklm 02-05-12 11:29 PM

awesome thread!! thanks

karsty 04-07-12 02:43 PM

This has helped a ton. Thanks!

Uleepera 04-21-12 11:41 AM

This thread should be stickied

Brekyrself 04-21-12 12:12 PM

18x9.5 +45 with 285/30/18 (yoko A048)
Ride height is ~25.5" with coilovers


Rear clears no problem.

Fronts rub the upper bolts holding the fender liner in place only on the street hitting large dips/bumps. On the track they do not rub at all.

silverTRD 04-21-12 05:54 PM

whats the lowest offset i could run on the front with an 8.5" wheel up front?

YoshiFD3S 04-23-12 10:16 AM

1 Attachment(s)
I'm running 19X9.5 and 19X10.5's, both 38-offset.

255/35/19 and 295/30/19 tires.

Attachment 711551

Installed pictures coming soon.

Plans are to roll the fenders until I can afford to do my full widebody conversion.

Metan 05-30-12 12:12 PM

what about 17x8 ET44 all around?

Flyweight 05-31-12 07:00 PM

This thread is for wide wheels. 8 inch wide is stock. Why would you want to run at 17x8? That is the same as stock...that said, yes a 17x8 +44 would fit...won't look good or function better than stock though!

Tem120 06-10-12 08:50 PM

17x9 +25 f / 17x10 +20 R
 
Ok well the wheels I'm thinking of getting are

17x9 +25 f / 17x10 +20 R


in the front I will run 245/40/17's

in the rear 255/40/17

with this offset the wheel calculator says it wil poke .52 in the fornt , and .72 in the rear

fender will be rolled .

will this fit? without tomuch trouble?

F1GURIN 06-16-12 02:36 AM

I love this thread! Im curious what you guys think about this setup..

18x9.5+30
255/35 18
(both front and rear)

Will this fit with the feed front fenders?
Also.. how low can i go with this setup? Can i tuck tire with this?

ZDan 07-11-12 03:48 PM

Great thread!
I am currently running on TE37s, 17x8.5 +40 front, 17x9.5 +40 rear, with 255/40 front 265/40 rear StarSpecs.

StopTech front brakes, 99+ RZ rear brakes.

I am considering getting a set of RPF1s in skinny(ish) sizes for DD use and possible high speed runs (not on the street!) later this year.

Basically, wanna know what my options are between:
17x8 +35, 17x8 +45, or 17x8.5 +40 up front
17x9 +35 or 17x9 +45 in back

In particular which (if any) of those RPF1 fronts will fit over StopTechs (I would think that either of the rear sizes considered should fit over 99+ RZ brakes?).

Fender clearance isn't going to be a problem, just wanna know what fits over the brakes. TIA!

riwanika 07-12-12 10:24 AM

Someone posted a great website to preview wheels on your car and they had the most insane selection of wheels I've ever seen. Does this sound familiar to anyone? The app even had ride height adjustment and tyre size. If anyone can point me in the right direction that would be great! I was using it to try and see what style would work best and if I could find the wider sizes like 18x10+22

Zhé 07-12-12 10:30 AM


Originally Posted by F1GURIN (Post 11126326)
I love this thread! Im curious what you guys think about this setup..

18x9.5+30
255/35 18
(both front and rear)

Will this fit with the feed front fenders?
Also.. how low can i go with this setup? Can i tuck tire with this?

easily with feed front fenders

thebucky84 01-25-13 12:19 AM

Well I've read this thread over as well as checking out the excel sheet. I just want some verification on the setup I plan to go with.

'93 R1


18x9.5 +34 with 255/35R18 KDW's FRONT
18x9.5 +34 with 275/35R18 KDW's REAR


Based off what was stated earlier in this thread, the offset and wheel size for the rear is ideal without modification. As for the front, since the wheels have a slightly lower offset I can always get a small spacer for a proper fitment. Not a wheel expert at all and I'm still figuring these cars out as I go so any help would be great!

Flyweight 01-25-13 09:42 AM

A spacer reduces the offset even further which is what you do not want. You will rub considerably with a 9.5 +34 front wheel. For a 255 front wheel I highly recommend going with at least a +45 offset if you want a 9.5 in wheel. Anything less than this will require a very big roll/cracking of paint ect.

Not only this but your listed wheel sizes will not fill the wheel arches equally either making it look odd. The front will stick out much more than the rear.

My recommendation...do more research before you buy.

thebucky84 01-25-13 10:46 AM

Ok, I haven't committed to any setup just yet. I've been researching all over and hoped someone with experience would chime in here so thank you!

I have also been looking at a staggered setup

18x8.5 +35 FRONT
18x9.5. +35 REAR

Based on the excel sheet my offsets are right in that range.

airboarder 01-31-13 05:55 PM

Hey Flyweight. I totally agree with you on the wide bodies. Might consider a set of Feed front wide fenders but WILL NOT touch the rears. Anyways I decided to hold onto the bigger rims that won't fit 18x9 +15 and 18x10 +23 and actually just found the same rim style that will fit and wanted to get your opinion. The new rims are 18x8 +44 all around. I'm wondering if I used 2 of these rims on the front if I'd be able to use either of my old rims on the back. I may consider upgrading to the Stoptech brakes and also was wondering if they would fit with any combination of these. Thanks for any info.


-Chad




Originally Posted by Flyweight (Post 10176014)
Hello there,

The wheels and tires you purchased will not fit unless you pull the crap out of your fenders and run rubber bands for tires...or run a widebody kit. The purpose of this thread is to provide information for people trying to run the largest tires possible under a stock fd body.

If you want to run the sizes that you mentioned you will need either...

1. Consult someone who knows more about "Hella Flush" fitments i.e. extreme rolled fenders, and extreme streached tires. This "Hella Flush" movement is more about the look of the car and does detrimentally affect the dynamics and functionality of the car.

OR

2. Look into installing a wide body kit for your FD. This is very expensive as you will need to purchase the kit, paint the kit and fit the kit to your car. I personally love the look of a stock bodied FD and would never consider running a widebody kit. I think they are ugly and you can easily fit a 18x9 front and an 18x10 rear on a stock bodied FD. Which leads me to your 3rd and in my opinion best option...

OR

3. Sell the wheels! Silvia or Z car folk would be interested in the size and offset of the Volk wheels that you have. You can then use the money that you recouped to purchase a set of wheels that actually fit and FD. Do your research and don't spend any money until you know exactly what you want.

Good luck!


lOOkatme 01-31-13 06:05 PM


Originally Posted by thebucky84 (Post 11355700)
Ok, I haven't committed to any setup just yet. I've been researching all over and hoped someone with experience would chime in here so thank you!

I have also been looking at a staggered setup

18x8.5 +35 FRONT
18x9.5. +35 REAR

Based on the excel sheet my offsets are right in that range.


why not buy 18x9.5" +35 front and rear and run 245/35/18 tires all around. It will fit. Not many tire options in that size though.

you might be able to get away with a 255/35/18 but it will be close in the front but most likely do able. I would go with a medium width 255/35/18 tire...not a wide one IMO. (I am talking about rolled flat fenders here)

I see a lot of people going with pretty skinny widths on the front wheels...like a 8.5 or 9"....I suggest getting the widest wheel that can fit in the front and run a slightly stretched tire on it. The handling is much better than running a wide tire on a skinny wheel like a 255 35 18 on a 8.5" wheel or even a 9" wheel. I would run a 255/35/18 tire on a 10" wide wheel.


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