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

[Stephen]

35mm spacers?!

O_O


Give them to me

[MatRacer]

I tried my wheel without spacer, and its rubbing against the shock in front and against the spring support on the rear.

With 5mm, i think it would clear.


You are talking about JDM cars. Does those car have the same stock steering offset than an E30?

What is the effect of having a to big steering offset? --> instability?

According to that image. with big spacer, my steering offset will increase. However, if the King pin angle (strut angle left/right) is large, the center off the contact patch (wheel center line) can become inside the king pin axis. That would give a negative steering offset for the stock setup. if this is the case, bigger spacer would bring the steering offset toward 0, or on the other side and make it positive.

However, I read that BMWs had positive steering offset. So by pushing the wheel outside, i would increase the stearing offset...




Do you have the spec of the stock e30 suspension geometry?

I'm just trying to understand what is actually hapening...

Thanks

[Shhnoozy]

Need some help on tire recommendations. Here are the spec of the wheel:

Front: 16x8 et24
Rear: 16x8.5 et 14

Going on 1991 318is - 60/40 drop


Thoughts? (I was thinking 215/45/16)

[BeirBrennerE30]

The wheels will be slightly poking outside of the fenders. The M3 hubs' geometry pushes the functional offset 6-7mm lower, just for reference.

You'd need 205/40 front and 215/40 rear with rolled and likely pulled fenders (at least in the rear). It'd look truly aggressive though.

Thanks for the reply... What do yo mean by pushing the functional offset 6-7mm lower? the hub mounting face is further out on the e30m3 setup? isnt the e36 5lug even wider than that?

Is that much stretch going to be bad with a lot of hp?(this isnt going to be tracked just a high hp street car) The IE III stiff enough and low enough to pull this off?

Sorry for all the questions... I'm new to this whole fitting wheels for looks thing

[cr2596]

What would be the best offset for a 15x8 wheel all the way around on a 89 325i coupe? The car will be on GC coils. I want to be able run a good bit of tire and be fairly low(tucking a little tire).

[MatRacer]

Did someone ever used 7mm space without hubcentric? Is it ok?

35mm spacers?!

O_O


Give them to me

I don't know about give, but I could maybe sell them to you if I end up not using them. They are FK automotive spacers

[Jand3rson]

Jay, I'm going to be running on my stock weaves for a while, and need new tires for them, I also want to push them out a little, they sit WAY to far inside the fenders.

They have different size tires on them right now, the fronts are stock size, and the rears have 205/60/14's on them. I'm probably going to get ZE-512's on them in that same size all around.

What's a good amount to space them out to, that won't require excessive fender work? My front fenders are rolled, rears are not, and I'm on IE3's with Konis.

[Stephen]

nah bro stretch 155s on those suckas


i've heard 20/25 is good btw

[Jand3rson]

I was thinking about doing at least a 15mm, could I get away with a 20mm? Front and rear?

[Stephen]

Well obviously we'll let jay confirm this but i think 20 up front 25 rear would be awesome, but i suppose i could see how you might rub running 205s. Maybe 15 front 20 rear would be better, unless your truly looking for hellaaaaaflush :nice

Btw, I want pics of em nogaro'd and spaced once its done

[Mystikal]

Thanks for the comments!

The tires are to big, with 35mm spacers in front the tire is rubbing against the firewall. I was going to cut and weld, but I will try the wheel without spacers. Mayby it wont rub since the tire will be further inside the car.

I will also try to to stop my fenders order...:?

Getting a ~25.5" tire in the front well of an E30 will be extremely difficult. If you switch to a 235/40/17, you'll be dine.

[Mystikal]

You are talking about JDM cars. Does those car have the same stock steering offset than an E30?

What is the effect of having a to big steering offset? --> instability?

Do you have the spec of the stock e30 suspension geometry?

I'm just trying to understand what is actually hapening...

Thanks

Not sure, yes, and no.

Quite honestly I haven't dug very deep into the argument. I once (meaning circa 2001-2003) read a lengthy article on the matter in Sport Compact Car, and the writer, Dave Coleman, created something he creatively titled the "Dave Point". See if you can google anything up about it.

[Mystikal]

Need some help on tire recommendations. Here are the spec of the wheel:

Front: 16x8 et24
Rear: 16x8.5 et 14

Going on 1991 318is - 60/40 drop


Thoughts? (I was thinking 215/45/16)

215/45/16 is possible with a really flat fender roll in the back. 215/40/16 would be a lot easier, but fender gap would be a little worse. If you're willing to roll away get the size you want, otherwise I think a 205/45/16 would be the easy route.

[Mystikal]

Thanks for the reply... What do yo mean by pushing the functional offset 6-7mm lower? the hub mounting face is further out on the e30m3 setup? isnt the e36 5lug even wider than that?

Is that much stretch going to be bad with a lot of hp?(this isnt going to be tracked just a high hp street car) The IE III stiff enough and low enough to pull this off?

Sorry for all the questions... I'm new to this whole fitting wheels for looks thing

Yes, the hub is further out with the E30 M3 setup, which coincidentally is about the same as the iX. And yes, the E36 one goes past both.

Stretched tires and extreme HP are bed buddies, drifters are out in 450+hp cars sliding for hours on similar setups. In my own experience, I've been out driving hard with 215/35s on 18x9s in my M3 without a single issue. As for the ride height, IE III should be just fine.

[Mystikal]

What would be the best offset for a 15x8 wheel all the way around on a 89 325i coupe? The car will be on GC coils. I want to be able run a good bit of tire and be fairly low(tucking a little tire).

ET22. It will just barely clear the front strut (the main concern) with a 225/50/15 tire. If you need more space, 3mm universal spacers with stock bolts on the front will make room for just about anything.