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

[Mystikal]

Hi Jay. Thanks for being here after all these years. I have a question about tire size for a 16x7.5 et20 wheel.

I see most people run 205/45 but 205/50 has a more similar rolling diameter. Any difference in fit? Car is on H&R sports. Convertible with lower rear arches

Thanks!

I try! I wish I could stop by more often but life is seriously in the way.

205/50 is the correct and more popular size. 205/45 is for stancey fitments.

[Mystikal]

I have a 87 325is I have 20mm adapters for my style 5's 17x8 et20 with solid offset control arm bushings. What size tire can I run the front and the rear has 12mm solid riser bushings for the subframe there for less camber. Im also running H&R Race Springs. I have roller fenders.. I plan on drifting and aggressively driving the car so NO RUBBING ALOUD!!!!!!!!! lol

You definitely bought the wrong wheels then. They don't fit properly at all, and will rub.

[Mystikal]

Okay guys, I need to know how much spacer I need. I ordered a set of kamotors ultrawides so I'm not too worried about poke, but here's the question. The wheels I got are a 17x10 square setup with a +15 et. I already run a 5mm spacer up front to clear basketweaves on my coilovers. What size spacer will I need to fit the fronts?

15mm front spacers.

[Mystikal]

I'm looking at possibly running a set of klutch sl1's in a 15x8.5 et17 spec. What tire size would be best? Ideally I'd like to run a thicker sidewall 50/55? Thoughts? My car has the gc coilover spring kit/bilstein sports. Thanks in advance!


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205/50 for sure.

[Mystikal]

4x100 to 5x120 18mm adapters, 89 325I on H&R Sport Springs w/Bilstein Sports. Looking at E38 Style 5's 16x8 wheels. Will they fit with without rolling fenders? Tire size?

Need to roll fenders and run 205/45s. Will still rub occasionally. Not a great fitment.

[Mystikal]

I just bought an 87 325i very and will lower it with h&r sports with Billy sports. Can I put esm 002s 16x8 et20s with Kumho Ecsta AST Ku25 205/50r/16 without rolling fenders or rubbing?

Should just squeeze by without rubbing. I'd suggest ANY tire but ASTs though, they are seriously awful.

[Mystikal]

looking at buying Klutch SL1 16x8 et15 (front) and 16x9 et20 (rear).
85 325e on GC coils.

What size rubber should I run to avoid rubbing/fender rolling/stretch?
and will I need spacers?

Not possible without both stretch and rolling. 205/45 front 225/40 rear, rolled rears.

[Mystikal]

Ok - looking to see if I can run this set up without needing spacers on my 1989 325i with a small roll in the rear. Currently on Billy/H&R spring combo. This will probably change.

15x6.5 et 32 on a 205 tire
or
15x6.5 et 32 on a 215 tire.

I calculated max back space for 15" is 131mm and with tires about 129mm. Seems like if i ran 215's and they were really 215mm, I'd have issues. Can you confirm?


Thanks

Paper thin strut clearance. 205/50 will work, 205/55 will probably touch the struts.

[Mystikal]

Want to know if or what ill need for this setup to fit my 87 325is

Front Wheels: 16" x 8"
Rear Wheels: 16" x 9"
Bolt Pattern: 4x100 /114
Front Offset: 20 ET
Rear Offset: 15 ET
Center Bore: 73.1

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205/45 front, 215/45 rear, rear roll. Hubcentric rings.

[Mystikal]

1987 325es. Koenig feather 16x7. Offset +35 what's the max tire size and will it handle any drop springs if the tire size is reduced from max.

Bad offset, won't work without spacers.

[Mystikal]

90 325is with ksport coils
rear: 16x9 et20, currently running 215/40/16 with 5mm spacers.

I really want to move up to 225s on the rear, but 225/45s are laughably difficult to find. can I remove my 5mm spacer and run a 225/50 on the 16x9 without rubbing? I have some basic fender rolling done, but the 215/40s with the 5mm spacer rub with enough load.

Nope. And you live in America, land of internet purchasing. Nothing is difficult to find!

[Mystikal]

Looking at 15 x 8.5 wheels, any recommendations on tire size?

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This is about 20% of the info I need. See the first post.

[Tree25]

205/45 front, 215/45 rear, rear roll. Hubcentric rings.

Thanks Mystikal! I appreciate your time and knowledge.

Do you know where and what size hubcentric rings? Never heard of these before

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[Mystikal]

Thanks Mystikal! I appreciate your time and knowledge.

Do you know where and what size hubcentric rings? Never heard of these before

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Np! 73 to 57.1mm, which is one of the most common around. Any local wheel shop should have them.

[runnoelrun]

First off. Thank you for your input over the years.
Canadian people always helping out the homies.
Currently running 16x8 +28 offset
205/45 with h&r spring front / vogtland rears +20mm spacer (raises the car) because I drive a vert. Heavier in the back.

Question: Do you think I could run 235s all around, already have fenders rolled very professionally done. ( I like square set ups)
Thank you in advance.