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

[Mystikal]

First off, thanks for being so helpful. Much appreciated.

I just want to make sure that you know I'm using a full MZ3/coupe full rear setup, so will they actually be mismatched on the E30? Based on Calvin Zero's 5-lug conversion site, I won't be that mismatched (?) http://clavinzero.com/e30-5-lug/

Thanks again...

Mismatched relative to the fronts.

[Mystikal]

I am in the process of an LS swap and want to run at least 275+ on the back, and at least want the option of doing the same on the front. Was looking at ccw wheels. Something like this probably in the 17x11:
http://www.ccwheel.com/wheels-display.php?view=Classic2PC

What all is needed to fit a tire size this large on an e30?

Just want to make sure I'm not missing anything, I'm new to this platform.

Metal cutting and fender flares. Anything larger than a 245 requires body modding.

[gills]

Mismatched relative to the fronts.

got ya.

Ok, here's what I'm leaning towards:

Staggered Apex ARC-8's

Front: 17x8.5 et40
Rear: 17x9 et30

Tires: 225/45 front with 255/40 rear (25" OD for both), or just 235/40 all around (24.4" OD)

Let me know what you think,
Tom

[Mystikal]

I have a 1991 E30 318is with an S50B32 conversion.

I am running KW V2 suspension and the wheel specs are as follows:

Simmons FR18
F: 18x8 ET 15
R: 18x9 ET 25

Tyres currently are 225/35/18.

Given the engine swap I am wanting to run stickier rubber (looking at Bridgestone RE-11s) and wider tyres.

The rear guards are rolled.

Would 235/35/18 or 245/35/18 fit? And if so what should I run on the front?

Cheers.

Nice wheels. Unfortunately you're just about at the limit for tire fitment. The fronts are maxed out at 225/35 and the rears could just take a 235/35. 245/35 will rub.

[Mystikal]

got ya.

Ok, here's what I'm leaning towards:

Staggered Apex ARC-8's

Front: 17x8.5 et40
Rear: 17x9 et30

Tires: 225/45 front with 255/40 rear (25" OD for both), or just 235/40 all around (24.4" OD)

Let me know what you think,
Tom

Good wheel choice. 235/40 all around is safe, but 245/40 rears are possible if the fitment is just right. I can't say 100% for sure as experience with Z3M setups is a bit scarce. Might be a good idea to test fit the wheels first.

[Brisbane E30]

Nice wheels. Unfortunately you're just about at the limit for tire fitment. The fronts are maxed out at 225/35 and the rears could just take a 235/35. 245/35 will rub.

Mate thank you very much for your reply.

If I can fit 235/35 under the rear (I will see if I can grab a tyre in that size for a test fit) am I better off going something like a 215/40 front?

Cheers,

Tim.

[Nuai87]

16x8 Offset +25 lowered 3 inches on race land coil overs. And now I need tires but I don't know what size I can I while keeping stock fenders


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[Mystikal]

Mate thank you very much for your reply.

If I can fit 235/35 under the rear (I will see if I can grab a tyre in that size for a test fit) am I better off going something like a 215/40 front?

Cheers,

Tim.

No definitely not, 215/40/18 is much too tall. 225/35 is ideal.

[Mystikal]

16x8 Offset +25 lowered 3 inches on race land coil overs. And now I need tires but I don't know what size I can I while keeping stock fenders


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3mm front spacers might be necessary depending on where your spring perch lands. Otherwise, 205/45, 205/50, 215/45, and 225/45 all fit.

[Brisbane E30]

No definitely not, 215/40/18 is much too tall. 225/35 is ideal.

Can I start by thanking you very much for your advice. It is much appreciated.

I have one further question - if I'm running a 35 series tyre in the rear shouldn't I be running a 40 series in the front to keep rolling diameter much the same? Or will the difference be negligible?

Thank you again.

Tim.

[AWDBOB]

Hey folks, what is the best offset for a 16x9 wheel to run a 275/45 out back?

[Mystikal]

Can I start by thanking you very much for your advice. It is much appreciated.

I have one further question - if I'm running a 35 series tyre in the rear shouldn't I be running a 40 series in the front to keep rolling diameter much the same? Or will the difference be negligible?

Thank you again.

Tim.

No, 225/35 is closer in diameter to 235/35 than 215/40. Also it really doesn't matter functionally with the E30's ancient ABS and lack of stability control.

[Mystikal]

Hey folks, what is the best offset for a 16x9 wheel to run a 275/45 out back?

I don't know what car this is for, if it has flares, etc.

[AWDBOB]

I don't know what car this is for, if it has flares, etc.

Sorry, man. No flares currently on the 1989 325es. Suspension isn't slammed.

[mohamed...]

i have 2 sets of wheels.one is a set of 17x8/9 style 32s with an offset of 26/20 and then a set of 17x8 e39 style 5s with an offset of 20. i will have e30 m3 rear 5 lug and then lativian spindle sleeves which widen the front by 12mm on each side. my question is can i run 235/40/17 all around on both sets? i am on ground controls and all the fenders will be roller. thanks!