arc-8 fitment question

[Arctic328is]

will these 17x9 fit my e36?
just want to know if they'll clear before pulling the trigger on these. Want all four to be concave
http://www.apexraceparts.com/ARC-8-1...eel_p_151.html

[Arctic328is]

bump anyone?

[mikemxbike4]

Yeah, they will fit. You might have to roll your fenders depending on your alignment(amount of camber you are running) and tire sizes

[hks03evo8]

I run a similar setup:

Front: 17x9 et30 245/40/17
Rear: 17x9.5 et35 255/40/17

Rears rub a TINY bit without a roll, but with one there are no issues. Front is good all together.
I have Eibach lowering springs up front and stock suspension in the back.

[Arctic328is]

alright thanks guys. what kinda tires you think i should run on these? 245 all around?

[HamsM5]

alright thanks guys. what kinda tires you think i should run on these? 245 all around?

Just as an FYI... I bought a set of the ARC-8's 17x9 square in the +42mm fitment. I am running a 5mm spacer on the front wheel and nothing on the rear wheel. With that said, I had the rear professionally rolled by the bodyshop who detailed my car. My fender lips are completely flat underneath now. I could easily run a +12-15mm spacer on that rear wheel with good clearance.

The front fitment is easier to attain with that concave wheel than the rear. For the +30 to work, you will need to roll your fender and run a more aggressive camber setting than OEM specs, but it will work for sure.

The alignment on the front needs to be more aggressive than OEM spec as well, or the wheel will stick out past the fender and look pretty funny.

I would encourage you to run a 245/40 all four corners simply because the 255/40 is a taller tire and you will be clearance challenged to the lower spring perch. It works fine, just that the 245 gives you better clearance. I think the 255/40 looks kind of tall on the 17" wheel personally. I'd save a 255 for an 18" wheel where you don't have as much sidewall.

- Chris.

[IrishRally]

EDIT: Sorry, didn't realize you were the same guy.

[Arctic328is]

Just as an FYI... I bought a set of the ARC-8's 17x9 square in the +42mm fitment. I am running a 5mm spacer on the front wheel and nothing on the rear wheel. With that said, I had the rear professionally rolled by the bodyshop who detailed my car. My fender lips are completely flat underneath now. I could easily run a +12-15mm spacer on that rear wheel with good clearance.

The front fitment is easier to attain with that concave wheel than the rear. For the +30 to work, you will need to roll your fender and run a more aggressive camber setting than OEM specs, but it will work for sure.

The alignment on the front needs to be more aggressive than OEM spec as well, or the wheel will stick out past the fender and look pretty funny.

I would encourage you to run a 245/40 all four corners simply because the 255/40 is a taller tire and you will be clearance challenged to the lower spring perch. It works fine, just that the 245 gives you better clearance. I think the 255/40 looks kind of tall on the 17" wheel personally. I'd save a 255 for an 18" wheel where you don't have as much sidewall.

- Chris.

thanks for the info! this might be a noob question but what is the difference between the +30 and the +42mm?

[BMXWill]

thanks for the info! this might be a noob question but what is the difference between the +30 and the +42mm?

12mm of offset.. +42 is not concave and fitment is much easier on the e36 with wider tires. That being said I have 17x9.5 +35mm all around with 245/40/17.

[Arctic328is]

12mm of offset.. +42 is not concave and fitment is much easier on the e36 with wider tires. That being said I have 17x9.5 +35mm all around with 245/40/17.

thanks for the reply.... So your saying i wont have any problems with running those 17x9 with the 30mm offset? maybe slight fender rolling?

[pbonsalb]

Low offset means towards the fender; high offset means towards the car body.

In the front ET30 will work well for 17 x 9 since many people use ET42 plus a 10-12 mm spacer to push the wheels towards the fender for additional clearance on the car body (strut) side.

In the rear ET30 is not a good choice for stock fenders. With heavily rolled rear fenders and stock width tires and negative camber and not much lowering, it should be fine. Beyond that, I would find someone who has done exactly what you want to give you insight.

On my mildly lowered 99M3 with very heavily rolled fenders, I get occasional rub in the rears with 255/40/17 on ET42 17 x 9 wheels. If I lowered more, the rub would be worse. If I carried passengers, the rub would be worse. 255 width tires put 5 mm more on the outside (and 5 mm more on the inside) and also stick up into the wheel well about 1/8 inch further (they are about 1/4 inch bigger diameter).

More negative camber tilts the tires inboard at the top (and out at the bottom). It is good for race tracks where the g-forces on the suspension pull or push the wheel flat (eliminating the negative camber). On the street, too much wears the inside edge of the tire since it is carrying a disproportionate amount of weight. It also reduces straightline traction (where there are no g-forces on sides of the car to pull or push the wheel flat) because just part of the width of the tire is in full contact with the pavement. BMW sets these cars up with some negative camber, so obviously some is fine for daily driver use.

[Arctic328is]

thanks for the response pbonsalb, so ill be better off getting the 17x9 et42? i dont know even know if they have that option for all four concave

[pbonsalb]

They don't. I think they have an ET35, but am not positive. I would call Apex. They have E36 experience and should be able to give you good advice. The convex look great, but are less likely to clear big brakes and may have rear fitment issues on lowered cars if wide tires are used or not much negative camber is specified.

You could fix that with a set of rear fender flares. I have a set of Hard Motorsports rivet on flares waiting for me to install this winter, and will probably run 275/40/17 after that. As you go way up on width, you get to the point where you need to start moving the wheel towards the fender, so a lower ET would be desirable for this purpose although you can also just run spacers.

[FISEVEN]

thanks for the response pbonsalb, so ill be better off getting the 17x9 et42? i dont know even know if they have that option for all four concave

I run arc 8's 17x9 et42 w/ 255/40 square setup/ no spacer in rear/ 12mm spacer up front. Rolled to the max. The type of suspension, its setup and tire type is an important factor in making your decision. Like pbonsalb suggested costumer service at Apex is excellent. Id call them, let them know your exact setup presently and what you might run in the future to make the best decision.

Heres the 17x9.5" ET35 concave ARC-8s in Hyper Silver. 245/40/17 tires with 5mm spacer in the front and heavy fender roll in the rear. For the second picture those are quotes from Apex I copy and posted.



"We don't have any picture's of the 17x9.0" ET30 squared setup currently, but here are the 17x9.5" ET35, which shares the same concave face and is only 1mm more towards the fender than the 17x9.0" ET30:"



"Your car would look pretty similar to this with the 17x9.0" ET30. Both setups require a heavy rear fender roll and a good amount of negative camber dialed in front."

[Arctic328is]

okay so i pulled the trigger on a set of 17x9.5 arc 8s on all four corners. Gonna run 245's all around. i also got 5 mm spacers for the front. my car isn't very low so i dont know if i should get some negative camber in the front so the 245's will fit. what do you guys think? everything was ordered last night

[blckstrm]

okay so i pulled the trigger on a set of 17x9.5 arc 8s on all four corners. Gonna run 245's all around. i also got 5 mm spacers for the front. my car isn't very low so i dont know if i should get some negative camber in the front so the 245's will fit. what do you guys think? everything was ordered last night

Hey, I know it's been a while but how did this all work out for you? I've been deliberating over this on and off for years. I love the Apex wheels, but I really want the concave face rather than the flat face. As you've discussed here, I'm fairly uncertain how either the 17x9 et30 or the 17x9.5 et35 concave wheels would fit. I know the flat-faced 17x8.5 et40 or 17x9 et42 will fit with no (or very minor) issues. I think the concave wheels will be much closer and harder to make work if they do have clearance issues.

I all about putting function over form, but the concave wheels are also nearly (or more than) a full pound lighter than the flat-faced options.

Can you talk about how yours fit, any rubbing or any additional work you had to do to make them fit without issues? Thanks!

[Drifter007]

I run a similar setup:

Front: 17x9 et30 245/40/17
Rear: 17x9.5 et35 255/40/17

Rears rub a TINY bit without a roll, but with one there are no issues. Front is good all together.
I have Eibach lowering springs up front and stock suspension in the back.

Were your rear fenders pulled? or was it stock. Camber?

[Mklock]

I can guarentee you will need a roll unless you are monster truck height. 17x9 et 30 rubbed on my fronts but I did have a 12mm spacer. Maybe some camber will help.

[Eddy@ApexRaceParts]

I might be able to help out here!

We would recommend the following fitment for the E36:

F/R: 17x9" ET30 - Profile 3 - 245/40-17
OR
F/R 17x9.5" ET35 - Profile 3 - 255/40-17

For the 17x9 ET30, Rear fender roll required. KW suspensions will not work with this fitment, due to front strut clearances.

For the 17x9.5 ET35 fitment, we would recommend a spacer needed up front to clear suspension, and negative camber dialed in. The spacer size is fully dependent on suspension. Rear fender roll also required.

I hope this helps clarify things a bit!

As always, just shoot us an email or give us a call if you have any further questions!

- Max