205 tire on a 10inch rim?! u better have AAA when the tire dismounts itself on the freeway

 

I wonder how long it would take to condense all of the information in this thread into an faq? Hard to believe it's this long now.

 

I know i need around a +20mm offset to fit 17x9" with 255's up front. Would it be smart to get little higher offset like a +24mm offset and add spacers to be on the safe side bc im wanting the tires/wheels the furthest inward as possible. THis would a avoid the wheels sticking out more than they need to correct?

 

16x8.5s +38 fit my vert fc? Stock height, might lower a liiiiiittle bit sometime soon

 

You might need a wheel spacer up front to clear your sturts. I have 17 x 8.5 +30 and it needs like a 5-10mm to clear the strut. I have shine front fenders that are a little wider, so I'm not sure how much it'll take to fit the fender though

 

How much offset would I need to clear with that size?

 

Stock suspension. 17x9 + 15 with 215-55-17

 

I ran +24's on my car a while back. They were fairly close to the coilover so I really made sure my wheel bearings were in tip top shape. Even just a little play would rub the wheel on the coilover.

 

COPY POST

I know I haven't updated in a while, but here is how she sits today. Hope to have the fenders painted soon.







Specs are:
Front: 18x9.5 +3
Rear: 18x11 -9
Overs: Front - 30mm / Rear - 25mm.

If you have anymore questions on the setup, lemme know!

 

looking into a set of wheels, was wondering on fitment

F: 17x8.5 +4
R: 17x9.5 +8

 

On my vert I'm only dropped about an inch and I want some 16x9 wheels. Camber is 1.2 front and 0.8 rear.
How much offset do I need?

 

17x9 + 15 225/45 all around

 

Just got these done! Fitment should be done in a couple weeks!

 

Hey guys, I'll try and keep it short. Came up with these numbers based on Ted's site and miata.net tire size calculator:

FRONT: 18x8.5 +44 with 225/40/18 (or maybe 235/35/18 if they'd fit?)
Have coilovers, and approx. -1 degrees camber, stock fenders (no rolling or anything)

I'm assuming I'd need spacers... Ted's site says I can add 10mm for coilovers. So i'd need a 10-15mm spacer? +44 is the lowest they have for 8.5, and 8.5 is the skinniest they've got too in the color combo I want.

REAR: 18x9.5 +22 with probably 255/35/18 tire (would 265/35/18 or 275/30/18 fit?)
Also have coilovers, and approx -1.5 degrees camber, stock fenders (no rolling or anything)

I'm not going for anything crazy or stance looking. I'd rather do 17s, but 18s is all they got in the style I like. Just want it to be nice and flush. Thanks in advance.

 

You need the 10 mm spacer in front, and a fender pull and roll in the back. You need rear wheels with an offset of around +35 to get them to fit inside the fenders.

 

Trying this again
Trying to pick up some regamasters or work meister s1r's for my 1990 vert

What offset do I need to fit 17x9 nicely on a car thats not even dropped a full inch?

 

Sweet, thank you!

Just to clarify, it's fender pull + roll for the rears only, nothing needed for front?

So they actually have 18x9.5 +35 or +44 too. Would that work for rear? Would I still need to pull + roll the fender? Any spacers or anything?

Your help is greatly appreciated!

--

P.S.: If you have time, here are all the wheel options in the color I like. What would be ideal for front and rear? I don't care all that much about tire size, but I'd prefer 255s on the back, but could do 245 if it would make the difference. And again, I like 17s over 18s.

17x9 +35
17x9 +42
18x8.5 +44
18x9.5 +22
18x9.5 +35
18x9.5 +44

I'd also prefer not to have to roll/pull fenders.

 

One thing I forgot to mention... Because of the coilovers, my car is lowered a good bit. I'm not exactly sure how much, but could be as much as 1.5 inches. Thanks again guys!

 

17x9 +35 with a 10mm spacer up front would clear your suspension, and you would need wider fenders or flared-pulled stock fenders. Suspension to wheel clearance will be tighter than usual so be sure your wheel bearings are in good condition with zero play.

Rears can go without a spacer and all you would need is a rolled lip.

With this, you can run 255/40/17 on all corners.

 

MaczPayne, thanks for the feedback!

In an effort to get a really good grasp on this, I went kinda crazy. I just spent the last few hours running some calculations based on Trot's FC Wheel Fitment GUIDE Thread. Actually, I made a pretty cool spreadsheet that does the calculations. I crossed-checked it with RETed's recommendations from his wheel page, and it seems to line up pretty well. I also looked at a couple of specs other people said worked, and again, it pretty well seems to line up.

If anyone else sees this post, and has some wheel/offset/tire/spacer specs that they've actually installed successfully, I'd love to run them through my calculator to see how accurate it is.

One question I have is, do you agree with these pages as far as the general guidelines they give?

Here are my questions and thoughts on your suggestions:

So according to what I've been reading (and my spreadsheet), it looks like the 10mm spacer is right on for 17x9. However, it appears that wider or pulled fenders might not actually be necessary... bear with me. According to Trot's thread above, he says there's a max of about 90mm max of space between the hub and the outer lip of the wheel before you start running into clearance problems with the fender. With this width, offset, and spacer, I'm coming up with almost exactly 90mm from the hub to the outer wheel lip. But again, this relies on Trot's measurements, and there's definitely a chance I'm doing some calculations wrong, or misunderstanding his write-up. I'm wondering how you're figuring your numbers from--personal experience, another calculator?

He does say that if the tire is 'much more' than 1" wider than the rim I could run into fitment problems, but with 225 I'd actually have to slightly stretch the tire out to fit on a 9" rim, so I don't think that's a concern. 255s though would be borderline.

Also, were you taking into account my camber and lowering? Because I'm not factoring that into my numbers, and that definitely could have a profound effect. Any suggestions are welcome on this.

So, again, it looks like what I've got agrees, except on the rolled lip. From what I'm showing, I'd still have plenty of fender room with 17x9 +35; like 30mm before I even start getting close to the fender. Trot's thread says there's about 110mm of space between the hub and the fender in the rear, and I'm showing that 17x9 +35 is about 80mm from the hub to the outer wheel lip (again, leaving 30mm).

All 4 corners? Man, you're right. But now I'm really starting to doubt my calculator, because having 255s on the front without any fender rolling or anything sounds pretty crazy. I always was under the impression that 235 was pretty much the max up front without widebody, but that's just second-hand information. I actually get a little bit of rub up front on the inside of the wheel wells under heavy cornering loads with 225s...

Regardess of everything above, I'd probably still roll the fenders anyway just to be safe.

Thanks for your time. Obviously anyone else please feel free to chime in. I'm just learning all of this. I've had my FC for 11 years, but have never changed the wheels! And I like to measure twice and cut once.

 

And by the way, I'm going to try stuffing 285/18's all around on the next setup (on +30mm fenders)

 

So for my vert which is hardly lowered AT ALL, will 17x9 +30ish fit well without any other modification? What specific offset would yall recommend? And please no stagger, i want to be able to rotate my tires. Just trying to get multiple opinions because work meisters ain't cheap and I don't want to make any mistakes here

 

What size tires would you plan on running? As everyone has been saying, it does make a big difference.

For the front, +30 would work, but you'd need a 5mm spacer, and might need to roll front fenders. Rears should be fine.

To some extent, stagger only matters if you're doing different tire sizes; technically you could have different wheels sizes/offsets with the same tire size (within limits). Unless you're saying you want to be able to rotate the wheels AND the tires yourself together (which is easier and less expensive). If that's the case, any offset from +25 up to +45 would work, but you'd need a spacer up front for anything above +25, and on back for anything above +40. But ideal I think would be 17x9 +25 because no spacers would be needed. This assumes stock suspension and camber, and a tire that is less than 1" wider than the wheel (255 or less). If you want all 4 corners the same, I'd recommend 245/40/17.

Anyone else, please feel free to confirm. I would definitely get a second opinion on this because I'm not an expert; I'm basing my numbers on other's suggestions and not personal experience.



You're really getting me thinking. I'd love to have the same tires in front and rear so I can rotate all 4, or even 2. That's the biggest problem I see with having big stagger and directional tires; no rotating.

So did you use 17x9s yourself? Based on your experience, do you have any different measurements? For example, 90mm is too liberal in the front from hub to fender? Do you have Blue TII's numbers still?

My FC is in the shop at the moment, but when I get it back I might try and get out there with a ruler/tape measure and see if I can get some more measurements to confirm everything.

Lol. I wish I could do -2.5, but this is also has to serve as a street car. But that's really interesting. I might be able to factor camber into my calculator. Do you know exactly (or approximately) how much space it gives? Like for example, every -1 degree gives another 20mm of clearance or something (up to X limit)?

So are you agreeing then that I should be able to fit those in the rear without messing with the fenders? Again, I probably still will to be safe.

 

MaczPayne and I are pretty much in sync with all or our figment info, we ran very similar setups.

If you want to run a square setup with large tires with stock fenders you need a 17x9 wheel in a mid 20s offset. Honestly a +30 with a 1/4 inch spacer in front would be perfect because you would have a little more room for a 255 tire in the rear.

If you want to run 235/40 or 245/40, you can do that pretty easily with close to -2 degrees of front camber. This is a great street setup. You'll need to roll the front fenders. If you want to do 255s you'll need to roll the rear fenders too.

Here is my car on 17x9 +24 and 255/40/17 NT01s which are huge for a 255. The front just fits, the tire touches the swaybar at full lock.

This is -3 degrees camber

 

Dang. How does it work with so much negative camber on the street though? Do you have directional tires? Don't they wear unevenly? Also, don't you lose some grip because of the extreme camber? Can you do 245s on the front without -2 degrees?

But I'm impressed how big of tires you guys are fitting under stock fenders.