What Size PSS for OEM 19" Wheels?

[CanAutM3]

Originally Posted by A47

No the 265/35 19 shown in the the table you posted.I presume it must be an OEM fitment on some model,front or rear?Thanks

The 265/35R19 BMW star spec is the rear tire for the M2 (10" wide wheel)

[CanAutM3]

Originally Posted by jawwadh

265/35/19 pss

I don't believe there is a "generic" PSS in that size. Only 5 different OE specs.

[Jaymax85]

Originally Posted by CanAutM3

I don't believe there is a "generic" PSS in that size. Only 5 different OE specs.

Bah ur right I meant NO Porsche

[CanAutM3]

Originally Posted by jawwadh

Bah ur right I meant NO Porsche

Cayman rear tire for a 9.5" wide wheel.

[Jaymax85]

Originally Posted by CanAutM3

Cayman rear tire on 9.5" wide wheel.

So pretty much what is being said here is that the optimal tire is one that is designed for a 9.0 inch wheel vs 9.5etc... Can u explain the reasoning?

[CanAutM3]

Originally Posted by jawwadh

So pretty much what is being said here is that the optimal tire is one that is designed for a 9.0 inch wheel vs 9.5etc... Can u explain the reasoning?

Only assumptions on my part.

It's mostly all in this post: http://f80.bimmerpost.com/forums/sho...&postcount=213

[Jaymax85]

Originally Posted by CanAutM3

Only assumptions on my part.

It's mostly all in this post: http://f80.bimmerpost.com/forums/sho...&postcount=213

Wow thanks .. So if u were to go 265/35 Rear would u recommend the 285/35 front ?

[CanAutM3]

Originally Posted by jawwadh

Wow thanks .. So if u were to go 265/35 Rear would u recommend the 285/35 front ?

What ???

You probably need to re-read what your wrote...

[Jaymax85]

Originally Posted by CanAutM3

What ???

You probably need to re-read what your wrote...

Sorry at work and was typing fast.. I actually read the other Thread and all my questions were answered

Prob go with 265/35 front and 295/35 Rear

[CanAutM3]

Originally Posted by jawwadh

Sorry at work and was typing fast.. I actually read the other Thread and all my questions were answered

Prob go with 265/35 front and 295/35 Rear

265/35R19 (M0) front with 295/35R19 (BMW star) rear would be my pick

[CanAutM3]

farbmw

The PSS "Star" spec have a star in the oval after the Pilot Super Sport writing on the sidewall. See picture below:

[farbmw]

Originally Posted by CanAutM3

farbmw

The PSS "Star" spec have a star in the oval after the Pilot Super Sport writing on the sidewall. See picture below:

Thanks again!!!

[CanAutM3]

Originally Posted by farbmw

Thanks again!!!

The 265/35R19 M0 spec will have "M0" in that little oval

[farbmw]

Originally Posted by CanAutM3

The 265/35R19 M0 spec will have "M0" in that little oval

I see, it's all in the oval if your looking for OEM tire, but I guess if the tires are not OEM then it wouldn't matter.

Thanks again!!

[CanAutM3]

Originally Posted by farbmw

I see, it's all in the oval if your looking for OEM tire, but I guess if the tires are not OEM then it wouldn't matter.

Thanks again!!

The generic PSS have nothing written inside the oval. The generic 235/35R19 PSS on my wife's S4:

[Chez]

After reading through this thread, can someone clarify something for me?

I read that, ideally, you're looking for the rear tires to have a diameter 2.3% larger than the front.

265/35/19 fronts and 295/35/19 rears would give a difference of 3%.

265/35/19 fronts and 285/35/19 rears would give a difference of 2.3%.

Will either be fine in terms of not causing traction control to think wheels were spinning?

[CanAutM3]

Originally Posted by Chez

After reading through this thread, can someone clarify something for me?

I read that, ideally, you're looking for the rear tires to have a diameter 2.3% larger than the front.

265/35/19 fronts and 295/35/19 rears would give a difference of 3%.

265/35/19 fronts and 285/35/19 rears would give a difference of 2.3%.

Will either be fine in terms of not causing traction control to think wheels were spinning?

Yes, ideally, you would want to maintain the front-to-rear diameter stagger as close to stock as possible to avoid upsetting the DSC calibration.

However, I believe that the diameter stagger change brought by the 265-295/35R19 combo to be rather small. Further, since the rears are slightly taller with that setup, that would mean less DSC intervention when accelerating .

[Chez]

Originally Posted by CanAutM3

Yes, ideally, you would want to maintain the front-to-rear diameter stagger as close to stock as possible to avoid upsetting the DSC calibration.

However, I believe that the diameter stagger change brought by the 265-295/35R19 combo to be rather small. Further, since the rears are slightly taller with that setup, that would mean less DSC intervention when accelerating .

Cool. Now I just need to work out if 265/295 would rub with my Macht Schnell springs.

[Chez]

Well, I went ahead and ordered the 265/35/19 M0 and 295/35/19 * BMW. Should be here by Wednesday.

Will report back once I get some time driving on them.

[Mark's M]

Originally Posted by Chez

Well, I went ahead and ordered the 265/35/19 M0 and 295/35/19 * BMW. Should be here by Wednesday.

Will report back once I get some time driving on them.

And on that note...here's what I've done. After calling Michelin over the 265/35/19 "MO" vs "MO1" spec, I decided to aid the experiment by going with the AMG spec "MO1's" (C63 rear) at the front. For a couple of reasons. Michelin advised the difference was negligible but there's additional room for water channeling (width of the channels) in the "MO" as was discussed by CanAut. But with the rear at 295/35/19 now (BMW Star Spec) and a 30mm stagger, I wanted the fronts a touch stiffer (and with a touch more rubber on the ground) to compensate for what I assume will be a minor increase in understeer. Balancing a bit of a loss in water channeling vs a stiffer sidewall was the gamble here and time will tell if I made the right choice or not.

I also took a gamble on installing a set of Eibach Pro Kit springs, a mild drop of .8" front and .2" rear. Add that gamble to the wider wheels...19" BBS FI-R's which are 9.5 fr and 10.5 r and I'll tell you, when the car was up on the hoist at the dealership, I honestly didn't know if it'd fit when it came down. But it did. Rear no issue of course but the front...no issues, no rubbing, it's tight of course but so is the 275/35's up front on OEM rims.

So here's the pics...the first two show the difference between the mounted 265/35/19's front with the OEM 255 beside it and the 295/25/19's rear with the OEM 275 beside it. Notice the channels up front. The OEM 255's measure (from the outside in) 3mm and then 15mm for each of the larger 3 channels. The MO1 spec front channels measure 6mm and then 11mm for each of the 3 larger channels. So we'll see.

But so far....traction control already cut dramatically, ride is no different than OEM and last but not least, love the look. We'll see how it works on the track in June. Fingers crossed lol.

[CanAutM3]

Originally Posted by Mark's M

And on that note...here's what I've done. After calling Michelin over the 265/35/19 "MO" vs "MO1" spec, I decided to aid the experiment by going with the AMG spec "MO1's" (C63 rear) at the front. For a couple of reasons. Michelin advised the difference was negligible but there's additional room for water channeling (width of the channels) in the "MO" as was discussed by CanAut. But with the rear at 295/35/19 now (BMW Star Spec) and a 30mm stagger, I wanted the fronts a touch stiffer (and with a touch more rubber on the ground) to compensate for what I assume will be a minor increase in understeer. Balancing a bit of a loss in water channeling vs a stiffer sidewall was the gamble here and time will tell if I made the right choice or not.

I also took a gamble on installing a set of Eibach Pro Kit springs, a mild drop of .08" front and .02" rear. Add that gamble to the wider wheels...19" BBS FI-R's which are 9.5 fr and 10.5 r and I'll tell you, when the car was up on the hoist at the dealership, I honestly didn't know if it'd fit when it came down. But it did. Rear no issue of course but the front...no issues, no rubbing, it's tight of course but so is the 275/35's up front on EOM rims.

So here's the pics...the first two show the difference between the mounted 265/35/19's front with the OEM 255 beside it and the 295/25/19's rear with the OEM 275 beside it. Notice the channels up front. The OEM 255's measure (from the outside in) 3mm and then 15mm for each of the larger 3 channels. The MO1 spec front channels measure 6mm and then 11mm for each of the 3 larger channels. So we'll see.

But so far....traction control already cut dramatically, ride is no different than OEM and last but not least, love the look. We'll see how it works on the track in June. Fingers crossed lol.

Looks great . After you've driven them a little, please share feedback on how those M01 spec feel up front.

...and those wheels

You should double check those drop numbers, they seem a bit "too mild", even for the Eibachs

[A47]

Originally Posted by Chez

Well, I went ahead and ordered the 265/35/19 M0 and 295/35/19 * BMW. Should be here by Wednesday.

Will report back once I get some time driving on them.

It would be really interesting to see pics of the front tires side by side if you feel inclined.