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Discussion Starter #1 (Edited)
Since people (n00bs especially) can't seem to work the search feature, we're gonna try this.

Post your fitment questions here.

This is it. This is THE place. This is your happy zone. Breathe the fresh air. Feel the low offset Zen start to relax you.

Rules:
0: This thread will be heavily moderated! Arguing, flaming, trolling, etc will be deleted. Multiple aggressors will be banned.
1: Try not to bash the n00bs. This is their safe zone. Try to point them back to answers that may have been already posted. It's hard, but we can try.
2: Try to look at the posted answers before asking if your Sportmax will fit. This is, of course, provided this thread takes off.
3: Post info with your pix! In other words, if you post a shot of a Roadster with nice fitment, post the wheel size, offset, fender rolling, tire size etc.
4: Roadsters only! Any non-MX-5 shots will be deleted. Do it multiple times and you will get a temp ban.
5: Just chill. Chill like you had $240 worth of puddin'.




Offset calculator tools:
Really...someone should make a website with http://%3Cbr%20/%3E%0Ahttp://www.1010tires.com/WheelOffsetCalculator.aspan application of some kind to work these types of calculations out for those that suck at numbers and math...

Fender Flare thread:
http://www.clubroadster.net/vb_forum/showthread.php?t=15291


How to fit 15x8+0 wheels
by scooby steve33
So the amount of people i see asking the same question over and over and over and over made me think it would benefit everyone if we just made a 15x8 0 offset thread. I had some on an NA so ill put in my two cent if other people have info on NBs and so on go for it.


WHEELS:

15x8 0et

TIRES:
you can run a
165 45 -15 really really low profile and stretch, looks like ****
195 45-15 some stretch, looks decent can go low with some camber
195 50 -15 a more substantial looking tires (taller sidewall) may be a tad bit harder to fit
205 and larger going to be tough to fit but can be done

Camber:
First off you dot have to "buy" camber. Your stock arm do all the adjusting one should need for these. Use the eccentrics on the control arms to increase or decrease camber. Then GET AN ALIGMENT! not one to match OEM specs but to make sure its not completely destroyed. Match the camber from side to side. check your toe, personally i try to run very very little toe.

Fenders
A roll is just fine it will work ive done it on 195 45s just fine. A slight pull will make everything easier but is not necessary. Ill sat it again YOU DO NOT NEED TO PULL YOU FENDERS with the correct amount of camber, tires and ride height it works fine
 

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LoL Thanks for making a sticky thread!

I talked to a local friend about the fitment issue I had. So its the Sportmax 15x8
+15 mm with the Nito Neogen 205/50 for me. I hope this thread helps more of the newbs, there is a LOT of conflicting information on the internet.

Thanks again!!!
 

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Check this out
99 Running as little camber as stock adjustment will allow. Good Roll, No pull Front liners pulled rears still there. VMaxx Coilovers
15x8 et 0 205/50 Dunlops Direzza


Same Car 16x8 Et0 205/40 Federal ss595


At this ride height there was a tiny bit of scrub under heavy load, but not enough to cut into tire.
99 Tien Flex, same camber adjustment on stock bolts Good Roll, Little Pull in front, Hard Pull in rear. Really need to put the aftermarket rear uppers on.
16x9 et15 225/45 BFG KDW


Lots of rubbing at this ride height with tall 45 tire
245/35 Toyo t1r

No Rubbing
 

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Things are a bit better on NB (a bit more space under the fenders), I believe that in a NA car you will need to roll the fenders a bit to fit 205s. Also note that not all of the 205s are the same (some tires are wider than the others).
 

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35 offsets on rolled fenders... u cannot avoid mildly pulling the fenders.
205/50/15 15x6.5

205/45/16 16x7


yes they clear and yes they look very sunk.

0 offset 15s on the same fenders,
195/50/15 15x8

clears but will need more camber... max even.

15 offset 16s on the same mild roll.
205/45/16 16x8

a compromised set-up and works best imo. clears perfectly even after compromised alignment settings. -2.5* front, -2* rear.

13 offset 15s with the same roll and alignment.
195/50/15 15x7


15 offset range is the best moderation IMHO.
 

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because **** you
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Offset is the distance from the center line of the wheel (in an 8 inch wheel, it's 4 inches) to the back of the mounting hub
The lower the number in offset, the closer the wheel moves toward the fender and away from the shock tower.
Another term synonymous with offset is backspacing. Backspacing is the distance from the rear of the hub to the end of the wheel toward the shock tower; most easily measured by laying your wheel face down, putting a straight edge accross the wheel and measuring from the hub out to the straight edge.

here's a link for more info on that
http://www.tirerack.com/wheels/tech/techpage.jsp?techid=101

and here's a backspacing to offset chart



Offset is measured in millimeters
1 inch = 25.4mm

When you go +1 inch in width from your current setup 12.7mm is added equally to both sides of the wheel from the hub, so a 15x8 +30 will stick out 12.7mm more than a 15x7 +30.

Here's a basic offset calculator
http://www.1010tires.com/WheelOffsetCalculator.asp

Here's a more in depth one that I prefer to use (note: you can't stretch tires)
http://www.rims-n-tires.com/rt_specs.jsp
 

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This is for a NB. What should I expect with this setup? Application is more daily driver so alignment considerations (specifically camber) must be conservative. what should I expect?

16x8-0 205/40
16x9+13 225/40


Would this be considered aggressive? borderline to aggressive? Semi conservative? I am a noob and proud of it. My technical background lies in technology NOT automotive so please forgive me.

thanks
 

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iirc that's close to what rob was running before he sold his car, but he was lower than you.


 

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Things are a bit better on NB (a bit more space under the fenders), I believe that in a NA car you will need to roll the fenders a bit to fit 205s. Also note that not all of the 205s are the same (some tires are wider than the others).
Im looking at the Nitto Neogen 205/50's I can pick up a brand new set for 260 here locally. I think those shouldnt cause a problem. Fender rolling isnt a huge issue either, I have a couple friends around town that have the tools as well as the know-how to do it properly.

Opinion/thoughts on the Neogen 205's?
 

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you didn't pay attention.
he posted about 15x8 +0, 16x8 +0, and 16x9 +15 all in his post.
 

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^
sounds about right.
I'd say go somewhere between +10 and +15 depending on the look and tire you're trying for.
 
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