Tyre rub

[stvh]

I’ve just picked up an E86 that is fitted with 19” wheels and 245/35 tyres on the front.
The guy who I bought the car off said he had just fitted the wheels/tyres prior to selling it.
The test drive/drive home was uneventful, but when driving on b roads, I’m getting tyre rub from the o/s/f.
I suspect it might be suspension related because there is no rubbing on the n/s. If I purposely drive over speed humps (the square ones which you can straddle) slowly with just the o/s it rubs. I can hit the speed bump quite a bit faster with the n/s, no rubbing.

My question is, where should I start looking, shock, spring, bump stop (if they have one)

Many thanks

 

[enuff_zed]

Lots of variables tbh.
Could be the tyre width, but that doesn't seem excessive.
If you have any history with the car have a look and see what suspension work has been done. Some people will change just one side, so you could have a weaker unit on the right.
Also worth getting a full alignment check carried out. Maybe the camber is wrong on that side.
Don't overlook the obvious either; is the arch liner fitted correctly?

 

[stvh]

Thanks for the reply,
The car is booked in for a service in a couple of weeks. I’ll get them to give it all a good going over (and an alignment) see if they can find anything.

Arch liner is fitted ok

 

[TheDan]

Comparing the tyre size you have vs the stock E86 tyre size, the 245/35/19 does have quite a bit large rolling radius than stock. It could be the large tyre combined with worn suspension (as enuff said) or even a broken spring.

 

[brillomaster]

what wheels are fitted, exactly?

really need to know the widths and the offset, to know how much further out the tyres are sitting. but as TheDan says, the tyres currently fitted are already a fair bit larger than the standard size - arguably, it has the wrong tyres fitted, should either be 225/35/R19 or 245/30/R19.

 

[stvh]

Don’t know what the offset on the wheels are.
The near side is ok just the offside that rubs,

 

[enuff_zed]

Don’t know what the offset on the wheels are.
The near side is ok just the offside that rubs,

But for all you know, you may only have 1mm clearance on the OSF. A slight manufacturing tolerance, or an alignment issue could be causing that.
My initial assessment of the tyres was a bit off, now I've seen the figures.
I think you need to think on getting smaller front tyres by the look of it.

 

[smorris_12]

Send a pic of the wheels. 19s were never standard fit on the E86 so they're probably off an E89 which have more offset. With 225s they fit so 245 must be right on the limit.

Edit: Just found the pics on the other thread. That's an 'ell of an offset on 'em.

 

[Meds]

I get front rub with 225/35/19x8J ET37 but mine's on lowered Eibach Pro springs.
I plan to chnage to OEM size 18x8J ET47 to avoid this.

 

[patriot66]

I had the same front tyre rub on compression on my Z4 a few years back. I was/am running 225/40 18 et34 on the front. Fitted a full new set of Bilstein B4 shocks as it was on original 15 year old knackered Sachs and it's never rubbed since. Also, my alignment guy told me that the o/s/f spring on many older cars gets 'tired' and can sit lower, affecting the alignment

 

[stvh]

Don’t know what the offset on the wheels are.
The near side is ok just the offside that rubs,

But for all you know, you may only have 1mm clearance on the OSF. A slight manufacturing tolerance, or an alignment issue could be causing that.
My initial assessment of the tyres was a bit off, now I've seen the figures.
I think you need to think on getting smaller front tyres by the look of it.

Thanks,
I am planning on changing the wheels/tyres soon.

 

[stvh]

I had the same front tyre rub on compression on my Z4 a few years back. I was/am running 225/40 18 et34 on the front. Fitted a full new set of Bilstein B4 shocks as it was on original 15 year old knackered Sachs and it's never rubbed since. Also, my alignment guy told me that the o/s/f spring on many older cars gets 'tired' and can sit lower, affecting the alignment

Interesting I’m planning on running The same tyre/wheel setup when I change them.
Sounds like I need to “freshen” up my suspension while I’m at it.
What springs are you using?

Thanks

 

[patriot66]

I had the same front tyre rub on compression on my Z4 a few years back. I was/am running 225/40 18 et34 on the front. Fitted a full new set of Bilstein B4 shocks as it was on original 15 year old knackered Sachs and it's never rubbed since. Also, my alignment guy told me that the o/s/f spring on many older cars gets 'tired' and can sit lower, affecting the alignment

Interesting I’m planning on running The same tyre/wheel setup when I change them.
Sounds like I need to “freshen” up my suspension while I’m at it.
What springs are you using?

Thanks

M-Sport springs

 

[MrPT]

I've run 245/35 fronts for a few years at stock-ish suspension height and camber. Marginal, at best, I reckon. You'll probably always have some kind of rub, but it might be worth it (especially if the rubbing settles down without going through the liners fully).

245/35 & 265/35 is a really sweet setup in terms of ride/handling, for example, and has that Porsche RS fitment look about it. Going from that to a 30 profile on the rear is a noticeable step down in comfort.

 

[stvh]

I had the same front tyre rub on compression on my Z4 a few years back. I was/am running 225/40 18 et34 on the front. Fitted a full new set of Bilstein B4 shocks as it was on original 15 year old knackered Sachs and it's never rubbed since. Also, my alignment guy told me that the o/s/f spring on many older cars gets 'tired' and can sit lower, affecting the alignment

Interesting I’m planning on running The same tyre/wheel setup when I change them.
Sounds like I need to “freshen” up my suspension while I’m at it.
What springs are you using?

Thanks

M-Sport springs

 

[stvh]

I've run 245/35 fronts for a few years at stock-ish suspension height and camber. Marginal, at best, I reckon. You'll probably always have some kind of rub, but it might be worth it (especially if the rubbing settles down without going through the liners fully).

245/35 & 265/35 is a really sweet setup in terms of ride/handling, for example, and has that Porsche RS fitment look about it. Going from that to a 30 profile on the rear is a noticeable step down in comfort.

Already gone through the liner

 

[patriot66]

I've run 245/35 fronts for a few years at stock-ish suspension height and camber. Marginal, at best, I reckon. You'll probably always have some kind of rub, but it might be worth it (especially if the rubbing settles down without going through the liners fully).

245/35 & 265/35 is a really sweet setup in terms of ride/handling, for example, and has that Porsche RS fitment look about it. Going from that to a 30 profile on the rear is a noticeable step down in comfort.

Already gone through the liner

On the outer edge of the liner where the wing/bumper joins ?

 

[stvh]

I've run 245/35 fronts for a few years at stock-ish suspension height and camber. Marginal, at best, I reckon. You'll probably always have some kind of rub, but it might be worth it (especially if the rubbing settles down without going through the liners fully).

245/35 & 265/35 is a really sweet setup in terms of ride/handling, for example, and has that Porsche RS fitment look about it. Going from that to a 30 profile on the rear is a noticeable step down in comfort.

Already gone through the liner

On the outer edge of the liner where the wing/bumper joins ?

Yes just behind the side reflector on the bumper.

 

[patriot66]

Already gone through the liner

On the outer edge of the liner where the wing/bumper joins ?

Yes just behind the side reflector on the bumper.

That's the usual spot