ASK ALL WHEEL/TIRE FITMENT QUESTIONS HERE - The Official Wheel/Tire Fitment Thread

[Mystikal]

Ok, I have a few questions. I am retarded when it comes to fitment...even with all the reading I have done.

Here goes, what all do I need to run 15x8 et25 Enkei 92's? And, what tire size would I want for a square, maybe slightly stretched setup?

Specs:

15x8 et25 Enkei 92's

GC Coils (450F 700R)

Late model

Fenders have been rolled to fit 17x8 Apex ARC-8's with star specs.

Thanks a bunch!

Are you looking for 225s (i.e. the biggest size possible) or flush fitment (I'd back you down to a 205/50 with spacers). Let me know.

[Mystikal]

Just wanted to confirm this would fit ok. Current Specs:

Bavarian Motorsports Lowering Springs
Billy Sports
XXR 531 (out in March) 16x8 +20
Dunlop Direzza 205/50R16

Will this wheel tire/combo fit or is there any need for spacers/fender rolling.

Thanks!

Shouldn't need rolling (95% here), definitely won't need spacers.

[Mystikal]

Thanks for all the help...Jay. I think I've heard people call you that...

Last couple questions:
Why doesn't a wider stance help handling? I mean, I guess a 5 mm difference might be negligible, or that after a certain width, its effectiveness would disappear, but if i think about a really narrow width vs a really wide width, there's a definite advantage.

And if there isn't an advantage, why are there so many people going crazy about getting their wheels flush? Is it just an aesthetics thing?

Yup, Jay would be me.

There's a limit to how far you can space out a wheel before the handling becomes unpredictable. I'm not smart enough to explain the science behind it. But in any case, the 5mm difference we're discussing has no effect on anything besides the tires rubbing on your fenders.

And yes, flush is 100% for aesthetics. Definitely not the fastest way around a track.

[Mystikal]

what if i ran 35mm adaptors all around, would my wheels not clear the suspension components? or just not look right?

any recommendations for rear tire size?
(16x9" wheel for the rear)

Just not look right, i.e. far sunken in especially compared to the look you're going for.

195/45 F 215/40R

[Mystikal]

I have an opportunity to obtain 16x9, 4x100, et25 57.1 cb wheels for a 1987 e30. These will be used for the rear, and a 16x7 et 25 front. My question is as follows:

May i run these without spacers? And if so, tire size recommended.

Thank you in advance.

Yes, you can run these without spacers. Tires you have many options:

F 205/50 215/45 225/45
R 225/45 245/35

[Mystikal]

What's the most flush to the fenders offsets I can get for my 89 325ix sedan??
I will be dropped on billy hd shocks and handr sport springs

Much too vague to answer. Wheel width, if your fenders are rolled, if your fenders are cut (under the iX flares), wheel diameter, love or hate of tire stretch, and the willingness to change all of those factors - all vital.

That said, a 16x9 +20 all around with a 205/45 would be a good start. Needs fender rolling.

[Mystikal]

Thanks, I'm pumped to mount these wheels but I'm a little confused. After I bought these I did a search and found your much earlier post where you fitted BBS RZ378s with 225/50/15 Falken ziex ze 512s.

http://www.r3vlimited.com/board/showthread.php?t=68071&highlight=hold+applause

You said in that thread (bottom of first page):

"No rubbing, unrolled fenders."

I have Ronal LSs with 225/50/15s on my e30 vert (also on HR/Bilstein sports) and no rub there without a fender roll so I figured I was good (although I think the LS offset is 24 as opposed to 20 - so that may be the difference).

Anyway, thanks for your help and please clarify this for me. If the 225/50/15s won't work without rolling, what size/brand would you recommend for a nice beefy all season tire?

PS - your taste is definitely impeccable and so is your knowledge

It all comes down to section width. The 512s ran extremely narrow for their listed sizes. IIRC (going off memory) the 225/50 512 has a 8.9" section width on a 7" wheel. This is the same width as most manufacturers 215 15" tires. The 912 is a still relatively narrow 9.0", but that would be enough to rub (one line on the sidewall of my 512s just barely got polished over time - couldn't hear a thing). Other 225/50 tire models measure 9.2-9.3" wide on the same 7" wheel.

^ Shit like this, ladies and gents, is why it's damn hard to replace my time here with a chart. Ah well. :)

[Mystikal]

Im deciding to stick with the euroweaves for now, 15x7.

People seem torn between 205/55 and 205/50, what say you is best for a moderately lowered car?

The tires im getting are Yoko S drives.

I would go for the 205/55 but my KDWs are that right now and they seem like giant baloons. But Im afraid 205/50 would give me huge wheel gap and look undersized.


What say you oh great one?!


Thanks btw, you are awesome!

215/50! Happy medium. Slightly taller than 205/50, not as minivanish as a 205/55.

[Mystikal]

Would 205/70R15 fit on d-forces without issue, or is there going to be contact with the strut?

Uh, they'll clear the strut but probably not your entire front wheel well.

[u3b3rg33k]

Would 205/65R15 fit then? It's only .7" "wider" on each side than stock, and there looks to be plenty of clearance (those are 185/70/14s):

http://liquidflame.net/u3b3rg33k/BMW/snow/e30snowside.jpg

[lambo]

Are you looking for 225s (i.e. the biggest size possible) or flush fitment (I'd back you down to a 205/50 with spacers). Let me know.

Thanks for the help! 205's sound fine as this car won't be tracked, yet. What size spacers would you suppose?

Thanks!

[DrJosh]

Sorry if this has been covered, which it may have been already.

I am looking at TR C1's 15x7 with Et25 and Hankook R-S3's 225/45/15. I want to wider foot print because I like to do lapping days at the track. Will they clear the struts and not force me to roll the fenders/run spacers? The car is on H&R race springs with Bilstien struts.

[Madhatter]

having trouble trying to decide between running 17x7.5 and 17 x 8.5 weaves, front and rear, or just run 17 x 8.5' s all round for ultimate dish. The 8.5's come in a 20mm or 25mm offset, intend to run a 235/40R17 on the rear when im due for tyres next and im leaning towards running a 25mm offset on the rear to make sure the tyre will fit under the guard.

Anyone run a 8.5" front and rear? just trying to work out which offsets because 60mm of dish is pretty nice :D

[OrangeFiero]

Ok so would these work and whats max tire size and series?
Front 15x8 et0
Rear 15x9 et0
I am lowered on h&r race springs, and im worried about rubbing.

[O HELLA BMW]

Much too vague to answer. Wheel width, if your fenders are rolled, if your fenders are cut (under the iX flares), wheel diameter, love or hate of tire stretch, and the willingness to change all of those factors - all vital.

That said, a 16x9 +20 all around with a 205/45 would be a good start. Needs fender rolling.

so 16x9 +20 all around my IX running 205/45 on tires on all tires will be okie? is running a 205/45 on a 16x9 rim be considered as STRETCHING?

im thinking about goin with the ESM 009R wheels

what center bore size will i need for my 89 325ix?

57.1
67.1
73.1