Widest BBS RS' I can fit on a 325i Sport?

[da4x4turbo]

Hi Guys,

So I'm at the point of widening my BBS RS' and I've hit the first stumbling block.

I currently have 16" x 7.5J ET25's on there. This is the current setup:




The wheels look shit compared to how BBS RS' can look. They look lost under the arches so I'm widening them to 8J on the front and 9J on the back.

However now I think that that won't look wide enough to really fill out the arches.
So I'm thinking of going for Either 8.5J on the front and 9J on the rear
Or maybe even 9J on the front and 10J on the rear.

[Rav335uk]

10's might not work, they will stick out off the arch.
9's will be ok, but might rub, depending on what drop you have on the car.

[da4x4turbo]

So what I'm aiming for looks wise is this:



Now before anyone says, I know this will require serious arch modifications and will be very difficult to drive in the real world. But what I'm hoping to acheive is a look as close to this as is possible without compromising driveability.

My car will on some occassions be used as a daily driver.

[Rav335uk]

Bumpstops are your friends

[da4x4turbo]

These are the figures I've come up with with regards to offset etc.

The outer lip of my wheels is 1.5" and thes figures are all assuming I don't change the inner barrels of the wheels. i.e. the third part of the three piece split rim.

Front:
7.0J = ET +25
8.0J = ET +12.5
8.5J = ET +6.25
9.0J = ET 0

Rear:
7.0J = ET +25
9.0J = ET 0
9.5J = ET -6.25
10J = ET -12.5

[Jhonno]

I believe that is running 9's and 11's

[Rav335uk]

Arw those figures of the VWVortex site???

[Kos]

depending on the final et, you can go to 8's and 9's with out too much aggro.

keep the rear barrel ad it is and the centre, but just get the deeper lips, and you should keep your existing et should you not ??

oh and you will need to lower the front to pull the look off.

bump stops will stop the shcoks bottoming out but it wont stop the arches catching the tyres, you need to have some coilovers to set it up right

its about poke, tuck and stance

[da4x4turbo]

So My Real Question is:

Given the wealth of experience that's on here; can anyone tell me if I can fit 9J on the Front and 10J on the rear - assuming the offset will be as above - Without serious arch work being necessary? (My car is lowered 35mm all round)



I'm planning on running either 205/45 R16 or 215/45 R16's on the front,

and 215/45 R16 or 225/45 R16's on the rear,

depending on what width I can get away with.


Thanks in advance for any light people can shed on this.

[Jhonno]

Well.. Seeing as there is a pic of wider above yes

[Kos]

45's never stretch nicely

205/40's and 215/40 on 8's and 9's

8 & 9 x 15's et 25&35 needed arch work

[Kos]

who worked out them offsets for you ?

[da4x4turbo]

who worked out them offsets for you ?

I worked out the offsets after spending a bit of time on Wikipedia learning about offset.

Do I have it right???

[Kos]

i think you are right

but its stupidly confusing. i always work it out for inner clearance, then worry about arch clearance lol

[Kos]

either way, you will need some arch work, your inner clearance will be the same, the back of the wheel will be no nearer to the struts/shock it will just poke more on the road side as such

[da4x4turbo]

either way, you will need some arch work, your inner clearance will be the same, the back of the wheel will be no nearer to the struts/shock it will just poke more on the road side as such

That's the nature of the question though. How far out can I go before I start rubbing the arches and need to modify them?

I don't mind getting them rolled. But fitting new ones or whatever is the next step after rolling them would be a ball-ache !

[Emm3]

I'd go 9's on front and 9.5's on the rear which is what i'm running. On the rs that would mean 3" dish on the front and 3.5" on the rear.

[Jhonno]

either way, you will need some arch work, your inner clearance will be the same, the back of the wheel will be no nearer to the struts/shock it will just poke more on the road side as such

That's the nature of the question though. How far out can I go before I start rubbing the arches and need to modify them?

I don't mind getting them rolled. But fitting new ones or whatever is the next step after rolling them would be a ball-ache !

I have 8" 215/40 et20 on mine..

[hammoj28]

So what I'm aiming for looks wise is this:



Now before anyone says, I know this will require serious arch modifications and will be very difficult to drive in the real world. But what I'm hoping to acheive is a look as close to this as is possible without compromising driveability.

My car will on some occassions be used as a daily driver.

The rears on this are HA 11x16 ET 09

[Nay]

^^^ I love that ^^^


That thing is slammed!

[Alan31625]

i am doing the same thing very soon on my touring.
i am planning 8.5 x16 on the front
and 9.5x15 on the rear.
some arch rolling and mild flaring will be needed on the rear

[Nay]

I'm planning the same again. 8.5/9 fronts, 9.5 rears. Maybe 10 rear if not too mental.

I'll be chopping/remaking the arches if things go that way. But, will need wheels and so on before my car heads to a bodyshop to make them properly!

[da4x4turbo]

I'd go 9's on front and 9.5's on the rear which is what i'm running. On the rs that would mean 3" dish on the front and 3.5" on the rear.

Hey, thanks for that. Have you got a photo of your car on here somewhere that I can see?

Cheers

[da4x4turbo]

i am doing the same thing very soon on my touring.
i am planning 8.5 x16 on the front
and 9.5x15 on the rear.
some arch rolling and mild flaring will be needed on the rear

Hey Dude,

Do I know you? I can't think of any red tourings around Cork?

Do you know if the rear arches definitely need modification to fit 9.5J's ?

Or if the front arches need any modification to fit 8.5J's ?

Cheers

[Emm3]

Thats 9.5 on the rear with rolled arches, i could slam the rear and it would still clear the arches, fronts you can only go so low.

[Jhonno]

Do you know if the rear arches definitely need modification to fit 9.5J's ?

Or if the front arches need any modification to fit 8.5J's ?

How many times! Yes! I had to massage mine to fit 8's

Fronts will need the little lip folding back, but other than that they are more generous than the rears

[Kos]

Thats 9.5 on the rear with rolled arches, i could slam the rear and it would still clear the arches, fronts you can only go so low.

you need to drop that an other inch to pull off the look.......

[da4x4turbo]

Thats 9.5 on the rear with rolled arches, i could slam the rear and it would still clear the arches, fronts you can only go so low.

That Looks F**king AWESOME !

Have you got any photos from the front. Side-On?

Also, what size tires are you running ?

[Kos]

dont ask what the drop is, the coilover were just wound down till we were happy with the stance

rims started lige as et35 6.5J x 15 RM's (2pc) the 1/2 in lip was removed and 2" fitted on the front and 2" on the back

[Kos]

so 8 and 9 x 15. et 35 195/45s and 215/40's tyres

[harry_p]

Et is going to change with with, an et 35 6.5 in wheel is going to loose some offset with wider lips. Et is the distance of the mounting face from the centre of the wheel, by adding width to the outside only you're shifting the centre of the wheel toward the outsde of he car, closer to the mounting face. Et is only going to stay the same as a wheel gets wider if you add width equally to inner barrel and outside lip.

People seem to fit the 9in borbets without huge amounts of arch work, I'd probably be using the specs of those as a guide, and add 1/2 on and inch to the outside on the rear with some stretch and a bit more arch massaging.

[Emm3]

Thats 9.5 on the rear with rolled arches, i could slam the rear and it would still clear the arches, fronts you can only go so low.

That Looks F**king AWESOME !

Have you got any photos from the front. Side-On?

Also, what size tires are you running ?

205/40/16 Front & 215/40/16 rears, my suspension is new and the axle bushes have just been done, need to wait for it to wear in.

[Kos]

Et is going to change with with, an et 35 6.5 in wheel is going to loose some offset with wider lips. Et is the distance of the mounting face from the centre of the wheel, by adding width to the outside only you're shifting the centre of the wheel toward the outsde of he car, closer to the mounting face. Et is only going to stay the same as a wheel gets wider if you add width equally to inner barrel and outside lip.

People seem to fit the 9in borbets without huge amounts of arch work, I'd probably be using the specs of those as a guide, and add 1/2 on and inch to the outside on the rear with some stretch and a bit more arch massaging.

that may be the theory but id doesnt solve or explain how much clearance you will have to arch/struts

i always work with the original et to work out clearance. the original et is far more important

[Alan31625]

i am doing the same thing very soon on my touring.
i am planning 8.5 x16 on the front
and 9.5x15 on the rear.
some arch rolling and mild flaring will be needed on the rear

Hey Dude,

Do I know you? I can't think of any red tourings around Cork?

Do you know if the rear arches definitely need modification to fit 9.5J's ?

Or if the front arches need any modification to fit 8.5J's ?

Cheers

the red car is a sport. my touring is grey.
rears def need modding for the 9 an a halfs and the front will need a roll for the 8.5s

[da4x4turbo]

Oh right, sorry dude I thought the red one was a touring looking at the pic in your signature!

Whereabouts are you in Cork?

Thanks for the info. I'm gonna go for 8.5's on the front and 9.5's on the back, and I'll do whatever I need to do to the arches!

I've been in touch with Tunershop and Justmatz and they can provide the stainless dishes. I need final confirmation of a price from tunershop though.

It'll be epic when it's done!