275-35 front - 295-35 rear OEM Black wheels

[FSHNGRY]

Originally Posted by Palomequet

OEM 275-35 rear tires mounted on front wheels and 295-35 on rear, Michelin PSS
What do you think? the car drives great!

Next step, H&R springs.

Originally Posted by CanAutM3

Interesting and smart approach. Also interested about feedback on the handling. Any rubs?

My front tires are shot from a track weekend. So I am considering doing the same thing, moving my rears up front and buying a new set of rears.

Please share more driving impressions

Originally Posted by kitw

This will work fine with the OEM suspension and bump stops but any increase in travel will result in rubbing, due to the larger overall diameter. I wouldn't be surprised if you start to see some rubbing on the H&R sports but report back, as I'm not sure!

OP

Great set up. Those tires fill out the wheel wells nicely. I just recently lowered my car about .8 inches all the way around with the KW HAS kit. I also installed Macht Schnell 12mm spacers. So far, I have no rubbing issues whatsoever, and I still have room to go slightly larger on the tires. Would 275/295 fit with no rubbing issues? Or would you suggest going 265/285? Thanks for the advice in advance! Good luck with your set up, PLEASE report back after you install the springs.

[Longbow64]

This link might help with this thread...

http://www.rimsntires.com/specs.jsp

OEM setup

Summer wheels

- 9x18 (ET29) +10x18 (ET40), Style 513M
18": Michelin Super Sport: 255/40-18F, 275/40-18R

- 9x19 (ET29) +10x19 (ET40), Style 437M
19": Michelin Super Sport: 255/35-19F, 275/35-19R

[TahoeM3]

Originally Posted by kitw

Incorrect.

I've stacked a set of 275/35r18s next to an identical set, 1 mounted on 18x9 and 1 mounting on a set of 10s and the difference was HUGE. They looked slightly pinched on the 9s and pretty straight up and down with the 10s and there was over 4" of difference in the total stack height. I was shocked. That's why it is key to keep in mind the width of the wheel.

Are you saying a set of 4 wheels that were 10" width were 4 inches taller than a set of 9" wheels? Of course that would be the case and has nothing to do with the tread width, which wouldn't be affected by the wheel width. While they may look different to your eye, that won't affect the tread width, which is fixed.

[Palomequet]

Originally Posted by TahoeM3

Are you saying a set of 4 wheels that were 10" width were 4 inches taller than a set of 9" wheels? Of course that would be the case and has nothing to do with the tread width, which wouldn't be affected by the wheel width. While they may look different to your eye, that won't affect the tread width, which is fixed.

Agreed!

[brian99997]

Tire Rack seems to believe that the BMW spec Michelin PSS's have a 9.5" tread width rather than their equally sized but non BMW spec 275/35zr19 at 10.2"

I am trying to find some tires for the track in two weeks and ran across this thread and one of the tires I'm looking at is obviously the Hoosier R6 but I have 19's so I am basically limited to the 295/285 and 265. tread width is 10.1" and 9.6" vs 9.5" and 8.5" with the BMW spec Michelin.

Because of those variables (unknowns?) it seems hard to calculate roll out other than the 275x35zr19 is 26.6" in diameter and the 295 is 27.1" while the 285 is 26.9"..

R6's are usually pretty square tires though, so if you rub at all its going to get me on the bank of the super speedway for sure but at least I'm at stock height.

[solstice]

That looks really good. I don't have traction issues and I don't care about the difference in drag strip or lap times, I just like the look of wide tires and I think the beefy rear of the F80 need a bit more tire to look balanced.

What is the difference in road noise? Very noticeable or insignificant? What about mpg, any significant change?

[kitw]

Originally Posted by TahoeM3

Are you saying a set of 4 wheels that were 10" width were 4 inches taller than a set of 9" wheels? Of course that would be the case and has nothing to do with the tread width, which wouldn't be affected by the wheel width. While they may look different to your eye, that won't affect the tread width, which is fixed.

We're not talking about tread width.

[TahoeM3]

Originally Posted by kitw

We're not talking about tread width.

I see now you were talking about section width, which of course would increase with the wheel size, whereas I'm interested in increasing tread width which is undersized on the M4. The discussion had covered both plus rolling diameter.

Quote:
Originally Posted by CanAutM3
I doubt so. While the wheel width does have an impact on the resulting tire width, the tires structure has much more influence (unless you go with crazy stance nation wide wheels ). IMO, the overall tire width would not change drastically.

Incorrect.

I've stacked a set of 275/35r18s next to an identical set, 1 mounted on 18x9 and 1 mounting on a set of 10s and the difference was HUGE. They looked slightly pinched on the 9s and pretty straight up and down with the 10s and there was over 4" of difference in the total stack height. I was shocked. That's why it is key to keep in mind the width of the wheel.

[Palomequet]

[Palomequet]

I beg you pardon about it take so long but I preferred to do a full report instead of the trial and error process. I have finished with a set of AC Schnitzer springs after tried H&R and Eibach sets because with AC's I could achieve the handling and looks that I had in mind. No rubbing at all, very DD in comfort setting suspension and very aggressive in SS mode, right in the middle in Sport setting. Other than you need to do a lot of disassembling for the front and the need of a socket wrench SW18 part number 2360213 or equivalent mechanical tool I am pleased with the results. For the price of the AC's you can consider the KW sleeves, in my case I'm happy with my AC's.

[nathangracey]

http://tire-size-conversion.com/
Thought this applied to the conversation.
Haven't explored it too much, but I came across it while searching for tires.

[Palomequet]

Originally Posted by BROCHOP

OP

Great set up. Those tires fill out the wheel wells nicely. I just recently lowered my car about .8 inches all the way around with the KW HAS kit. I also installed Macht Schnell 12mm spacers. So far, I have no rubbing issues whatsoever, and I still have room to go slightly larger on the tires. Would 275/295 fit with no rubbing issues? Or would you suggest going 265/285? Thanks for the advice in advance! Good luck with your set up, PLEASE report back after you install the springs.

Doing what I did you end up buying just a pair of rear tires.

[TahoeM3]

Originally Posted by Palomequet

I beg you pardon about it take so long but I preferred to do a full report instead of the trial and error process. I have finished with a set of AC Schnitzer springs after tried H&R and Eibach sets because with AC's I could achieve the handling and looks that I had in mind. No rubbing at all, very DD in comfort setting suspension and very aggressive in SS mode, right in the middle in Sport setting. Other than you need to do a lot of disassembling for the front and the need of a socket wrench SW18 part number 2360213 or equivalent mechanical tool I am pleased with the results. For the price of the AC's you can consider the KW sleeves, in my case I'm happy with my AC's.

So do you find the traction is better off the line, coming out of turns, etc?

[hyperboost]

no spacers with these tires? I bet the car drives better now.

[Palomequet]

Originally Posted by hyperboost

no spacers with these tires? I bet the car drives better now.

No spacers. It is a huge difference!

[Palomequet]

Originally Posted by TahoeM3

So do you find the traction is better off the line, coming out of turns, etc?

yes, yes and yes.

[Palomequet]

Today's caption

[MDIVISION]

Originally Posted by CanAutM3

It is actually more than that. According to the Michelin site, the 295 are 1.2" wider than the 275 (271mm vs 301mm). So they would protrude 0.6" more on each side (15mm).

Some folks are running up to 20mm spacers front and rear without rubbing and 15mm spacers are very popular. Since the rear tires in the OP stick out by 15mm, it should not cause any rubbing IMO.

After further research, I might opt for a 265/285 /35R19 setup. The 295/35R19 are significantly more expensive than the 285/35R19. On the vendor sites I checked, the 295 are ~26% more expensive than the 275 while the 285 are only ~3% more expensive. However, that extra rubber on the road of the 295 sure is tempting.

so with OEM tires, 275F and 295R do not require spacers anymore?

[CanAutM3]

Originally Posted by MDIVISION

so with OEM tires, 275F and 295R do not require spacers anymore?

I guess you mean with OEM wheels...

I am still running OEM tires on OEM wheels, so I cannot attest to this myself. But the OP seems to have been able to successfully fit 275/35 front and 295/35 rear on the OEM 19" wheels without the need for spacers.

[MDIVISION]

Except I think I would do 295/30 in rear

[Palomequet]

Originally Posted by CanAutM3

I guess you mean with OEM wheels...

I am still running OEM tires on OEM wheels, so I cannot attest to this myself. But the OP seems to have been able to successfully fit 275/35 front and 295/35 rear on the OEM 19" wheels without the need for spacers.

You are right, NO spacers.

[CanAutM3]

Originally Posted by MDIVISION

Except I think I would do 295/30 in rear

If you do that, you would also need to reduce the front aspect ratio to 275/30R19.

Going with a 275/35R19 front and 295/30R19 would sway the front-to-rear stagger in the wrong direction and screw up the DSC/ABS calibrations.