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[E90Dave]

So I just noticed my 255/35/19 RE11s up front on my SDC F14 Forgestar 9.5 inch wheels are rubbing pretty good.

They rub so bad on one turn that the bumper moves a little bit!!

Help me pick out a new tire size and new tire.

Don't think I wanna go AD08R, a bit too much for the street.

Maybe the Kuhmo PS91 in 275/30/19 square??

[shimmy23]

a 275 tire would be wider than what you're running now. try posting this in the wheel/tire section too

[E90Dave]

Yeah, but it has a shorter sidewall!

[shimmy23]

does it really? 30/35 is the ratio... so with a wider tire a 30 sidewall isn't entirely shorter.

Google tire size calculator. that way you can really see the dimensions/measurements

[E90Dave]

Yeah, it's too tall /: I think after being worn down it will be okay - but for now just a bit much. I wanna raise the suspension though

[E90Dave]

I have some PSS on my M5 maybe I should swap them over

[RoundelObsession]

Originally Posted by E90Dave

So I just noticed my 255/35/19 RE11s up front on my SDC F14 Forgestar 9.5 inch wheels are rubbing pretty good.

They rub so bad on one turn that the bumper moves a little bit!!

Help me pick out a new tire size and new tire.

Don't think I wanna go AD08R, a bit too much for the street.

Maybe the Kuhmo PS91 in 275/30/19 square??

What the offset of your wheels?

[E46M3forRay]

Tire size is fine, pretty standard. It's the offset or raise your ride height

[dparm]

The sidewall is an aspect ratio, meaning it is a relative number, not absolute.


275/30R19 means "the sidewall is 30% of the tire's 275mm width" (82.5mm)

255/35R19 means "the sidewall is 35% of the tire's 255 mm width" (89.25mm)


However, you also have more tire sticking into the wheel well now, so if you're rubbing, it might make things even worse. Without posting the wheel offset and suspension setup, everything is going to be a guess. Also, posting this in the wrong forum won't help get you answers quickly.

You don't want AD08Rs for the street. Very poor ride quality (I know from experience) and you won't even be able to use 100% of its performance on public roads anyway. Go for something more reasonable like the Pilot Super Sport, Potenza S04, Conti DW, etc.

[E90Dave]

They are Foregatar 19x9.5 in front I believe 17 offset!

Lowered on TCK DA coilovers with a one inch gap up front!

I was thinking about the Ecsta PS91 which apparently is an almost exact copy of the PSS with 1/2 the price...

Take a read on them!

Maybe I'll do 265/30/19 up front and 285/30/19 out back.

[Black Gold]

That's not going to fix anything

That is a very aggressive offset.

Stock zcp front offset is 19x9 et 31. You have 19x9.5 et17. This is a 21.5mm difference, equivalent to running a 21.5mm spacer on the oem zcp wheel which will never fit without rubbing

Maybe you can run some super stretched tires, but I doubt that will fit.

You need to take some actual measurements and not randomly guess.

Also, you probably need to raise your car up.

[E90Dave]

I will take some measurements.

Also running 2.2 negative camber up front to help.

Maybe I'll get a 255/30/19 that would be far shorter.

[dparm]

Or just sell those wheels + tires and buy a set that fits. That width and offset is not a good fit for the M3.

Rubbing that severely could cause a dangerous blowout. Tires are a safety item.

[Black Gold]

Originally Posted by E90Dave

I will take some measurements.

Also running 2.2 negative camber up front to help.

Maybe I'll get a 255/30/19 that would be far shorter.

It's not just the height.

It's more likely how much they stick out.

You need to raise the car, run more camber, or get new wheels.

Tires won't do much imo.

[E90Dave]

I'll try raising her up and going a little more camber thanks guys

[red998]

I ran a RE-11 265/35/19 up front 19x9 with offset of 25 very little rub
I am running 245/35/19 with same rim little rub.
Probably going to back to 265 once the 245 wears down. I also have more camber on now then before and it may rub not sure, yet. hope that helps.

[Dave07997S]

Originally Posted by E90Dave

I'll try raising her up and going a little more camber thanks guys

To be frank Dave, I don't think that will help. An ET17 on a 9.5" wheel is just way to aggressive for a 26" tall tire. A 275/30/19 is only 25.6" tall and this would be your best bet, not to mention the 9.5" wheel width will support a 275 tire nicely. The E9X cars need all the front tire they can get. I am running 275/295s and I can't tell you on how much more mechanical grip there is, its really so much better. BTW, the RE11s are available in 275/30/19.

Dave

[E90Dave]

Thanks man.

To be honest I don't like the RE11 - I might switch to something else.

[Ingenio]

I'm running F14 SDCs 9.5" ET18 up front with 265/30/19 PSS and i'm lowered on KW HAS with no rubbing at all. When people say it's too aggressive... Don't listen.

[Dave07997S]

Originally Posted by Ingenio

I'm running F14 SDCs 9.5" ET18 up front with 265/30/19 PSS and i'm lowered on KW HAS with no rubbing at all. When people say it's too aggressive... Don't listen.

Its to aggressive for the diameter, not the width. A 265/30/19 is over .5" shorter than a 255/35/19. I am running a 275/30/19 on a 19X10 ET25, which has almost the same amount of poke as your setup and mine doesn't rub either. Its the height not the width.

Dave

[dparm]

Originally Posted by E90Dave

Thanks man.

To be honest I don't like the RE11 - I might switch to something else.

It's a very aggressive tire for a street car. Unless you are tracking it often and don't want to swap your wheels out, I think it's overkill.

Something milder like the PSS or S04 would be more than adequate.

[E90Dave]

Just got a set of 275/30/19 Exsta PS91 for front and 295/30/19 for rear!

Will comment back on how they work