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      05-06-2020, 11:17 PM   #23
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Originally Posted by Sandmansc View Post
So I have a 265/35/19 front 305/30/19 rear.
If I keep the 265/35/19 does that mean I need a 295/35/19? 35 sounds taller.

I've also been told to keep them at the right ratio or spec whatever ... 20mm difference. So if I have a 265/35 from it's recommended I get a 285/35 rear.

But that seems reeeeaaalllly stretches on my 11@ wheel.

So confused 😳😬😷
Talk to Zito if the can "shave" the wheel to get it in the et4x range?
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      05-06-2020, 11:35 PM   #24
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Quote:
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Originally Posted by LOW4LYF View Post
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Originally Posted by Sandmansc View Post
Sorry this would have helped in the original post huh ?

19x10 ET25
19x11 ET35
11" et 35 people use usually a 295 tire, to run a 305 you would need et 4x or higher.
So I have a 265/35/19 front 305/30/19 rear.
If I keep the 265/35/19 does that mean I need a 295/35/19? 35 sounds taller.

I've also been told to keep them at the right ratio or spec whatever ... 20mm difference. So if I have a 265/35 from it's recommended I get a 285/35 rear.

But that seems reeeeaaalllly stretches on my 11@ wheel.

So confused 😳😬😷
Lol. 295/35 will be a taller tire with more sidewall, than the 305/30 you have now. The main things are to keep the diameter difference between front to rear similar to what factory is. OEM diameter difference is 0.6". Like I said earlier, it is okay if you go a little under or above that amount. In terms of difference in width, I would try and stick between 20 - 30 mm difference. That's why I suggested either 265/30 or 275/30 front and 295/30 rear. Those sizes work well for 10 and 11" wheel widths. I wouldn't go with a 285/35 just because I don't like the tall sidewall unless it's factory sizes which is 255/35 and 275/35 but that's on a 9" and 10" wide wheel.
Go to tirerack and check out the dimensions for different tires. I can send you a spread sheet I made also that I use.
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      05-06-2020, 11:39 PM   #25
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Quote:
Originally Posted by LOW4LYF View Post
Quote:
Originally Posted by Sandmansc View Post
So I have a 265/35/19 front 305/30/19 rear.
If I keep the 265/35/19 does that mean I need a 295/35/19? 35 sounds taller.

I've also been told to keep them at the right ratio or spec whatever ... 20mm difference. So if I have a 265/35 from it's recommended I get a 285/35 rear.

But that seems reeeeaaalllly stretches on my 11@ wheel.

So confused 😳😬😷
Talk to Zito if the can "shave" the wheel to get it in the et4x range?
They're in CA I'm in KY
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      05-06-2020, 11:42 PM   #26
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Quote:
Originally Posted by rborane View Post
Quote:
Originally Posted by Sandmansc View Post
Quote:
Originally Posted by LOW4LYF View Post
Quote:
Originally Posted by Sandmansc View Post
Sorry this would have helped in the original post huh ?

19x10 ET25
19x11 ET35
11" et 35 people use usually a 295 tire, to run a 305 you would need et 4x or higher.
So I have a 265/35/19 front 305/30/19 rear.
If I keep the 265/35/19 does that mean I need a 295/35/19? 35 sounds taller.

I've also been told to keep them at the right ratio or spec whatever ... 20mm difference. So if I have a 265/35 from it's recommended I get a 285/35 rear.

But that seems reeeeaaalllly stretches on my 11@ wheel.

So confused 😳😬😷
Lol. 295/35 will be a taller tire with more sidewall, than the 305/30 you have now. The main things are to keep the diameter difference between front to rear similar to what factory is. OEM diameter difference is 0.6". Like I said earlier, it is okay if you go a little under or above that amount. In terms of difference in width, I would try and stick between 20 - 30 mm difference. That's why I suggested either 265/30 or 275/30 front and 295/30 rear. Those sizes work well for 10 and 11" wheel widths. I wouldn't go with a 285/35 just because I don't like the tall sidewall unless it's factory sizes which is 255/35 and 275/35 but that's on a 9" and 10" wide wheel.
Go to tirerack and check out the dimensions for different tires. I can send you a spread sheet I made also that I use.
That would be awesome. I was trying to find a way to keep my front and get new tears. I assumed the 35 would cause more rub. Makes sense.

So I need 265/30/19 295/30/19 and my rubbing should be completely gone and my traction should be restored.

Also trying to figure out how exactly to get euro or gets MDM. Are they the same? If not which is better ?
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      05-07-2020, 10:58 AM   #27
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Switch to 265/35/19 front and 295/35/19 rear. Get a proper alignment, problem solved. 305/30/19 is too wide for ET35 11" and the front to rear OD ratio is incorrect. Get Euro MDM coded, you'll have more fun as well.
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      05-07-2020, 11:28 AM   #28
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305/30's aren't square with a 265/35 and are generally 0.1" smaller. A 305/30 does another 3 revolutions more per mile than a 265/35. A 315/30 is a better rear tyre size that's 0.2" taller than a 265/35 but it's only available in a Michelin Cup2 and needs an 11" 43/44 offset wheel to prevent scraping.

I've never had any issues with this combo with Euro/GTS MDM. As far as square setups go, winter wheel/tyre options are square with 255/35 19's front and rear free of MDM issues.
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      05-07-2020, 08:36 PM   #29
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Quote:
Originally Posted by RevNev View Post
305/30's aren't square with a 265/35 and are generally 0.1" smaller. A 305/30 does another 3 revolutions more per mile than a 265/35. A 315/30 is a better rear tyre size that's 0.2" taller than a 265/35 but it's only available in a Michelin Cup2 and needs an 11" 43/44 offset wheel to prevent scraping.

I've never had any issues with this combo with Euro/GTS MDM. As far as square setups go, winter wheel/tyre options are square with 255/35 19's front and rear free of MDM issues.
Might be fine putting around town but start to get to the limit and the system intervenes earlier.
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      05-24-2020, 08:24 PM   #30
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Quote:
Originally Posted by RevNev View Post
305/30's aren't square with a 265/35 and are generally 0.1" smaller. A 305/30 does another 3 revolutions more per mile than a 265/35. A 315/30 is a better rear tyre size that's 0.2" taller than a 265/35 but it's only available in a Michelin Cup2 and needs an 11" 43/44 offset wheel to prevent scraping.

I've never had any issues with this combo with Euro/GTS MDM. As far as square setups go, winter wheel/tyre options are square with 255/35 19's front and rear free of MDM issues.
Quote:
Originally Posted by RevNev View Post
305/30's aren't square with a 265/35 and are generally 0.1" smaller. A 305/30 does another 3 revolutions more per mile than a 265/35. A 315/30 is a better rear tyre size that's 0.2" taller than a 265/35 but it's only available in a Michelin Cup2 and needs an 11" 43/44 offset wheel to prevent scraping.

I've never had any issues with this combo with Euro/GTS MDM. As far as square setups go, winter wheel/tyre options are square with 255/35 19's front and rear free of MDM issues.
Crazy update. BMW hooked a scam tool to it to test wheel speed. All wheels are exactly the same speed. When my wheel spin light flickers it reads N/A on the tool.

I had a mass air too high engine code they cleared. (It comes and goes).

The next day MDM works great. Traction works great. No wheel spin sign.

I doubt the mass air code had anything to do with it.

I'll just call it a miracle.

Still have rubbing on the rear.

So I'll consider switching to smaller tires. This things been a headache...but a fun one lol
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      05-24-2020, 08:26 PM   #31
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Quote:
Originally Posted by Signature Wheel BMW View Post
Switch to 265/35/19 front and 295/35/19 rear. Get a proper alignment, problem solved. 305/30/19 is too wide for ET35 11" and the front to rear OD ratio is incorrect. Get Euro MDM coded, you'll have more fun as well.
Quote:
Originally Posted by RevNev View Post
305/30's aren't square with a 265/35 and are generally 0.1" smaller. A 305/30 does another 3 revolutions more per mile than a 265/35. A 315/30 is a better rear tyre size that's 0.2" taller than a 265/35 but it's only available in a Michelin Cup2 and needs an 11" 43/44 offset wheel to prevent scraping.

I've never had any issues with this combo with Euro/GTS MDM. As far as square setups go, winter wheel/tyre options are square with 255/35 19's front and rear free of MDM issues.
Quote:
Originally Posted by Signature Wheel BMW View Post
Switch to 265/35/19 front and 295/35/19 rear. Get a proper alignment, problem solved. 305/30/19 is too wide for ET35 11" and the front to rear OD ratio is incorrect. Get Euro MDM coded, you'll have more fun as well.
Someone else recommended
265/30/19 and 295/30/19

Pros and cons ?
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      05-24-2020, 09:28 PM   #32
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Quote:
Originally Posted by Sandmansc View Post
Crazy update. BMW hooked a scam tool to it to test wheel speed. All wheels are exactly the same speed. When my wheel spin light flickers it reads N/A on the tool.

I had a mass air too high engine code they cleared. (It comes and goes).

The next day MDM works great. Traction works great. No wheel spin sign.

I doubt the mass air code had anything to do with it.

I'll just call it a miracle.

Still have rubbing on the rear.

So I'll consider switching to smaller tires. This things been a headache...but a fun one lol

Once you have the issue again disconnect your battery for one or two minutes. If it goes away get a full sw update at the dealer.

For your rubbing, try first more camber before buying new tires.
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      05-25-2020, 10:06 PM   #33
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Quote:
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Someone else recommended
265/30/19 and 295/30/19

Pros and cons ?
265/30/19 and 295/30/19 is proper for the E9x chassis, too small for the F8x. You want 35 profile if it's for the street, more comfortable.

For track, some do run 275/30/19 and 305/30/19.

And just because someone runs it, doesn't mean it's the best setup. We've done enough F8x to know what works.
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      05-26-2020, 08:21 PM   #34
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Quote:
Originally Posted by LOW4LYF View Post
Quote:
Originally Posted by Sandmansc View Post
Crazy update. BMW hooked a scam tool to it to test wheel speed. All wheels are exactly the same speed. When my wheel spin light flickers it reads N/A on the tool.

I had a mass air too high engine code they cleared. (It comes and goes).

The next day MDM works great. Traction works great. No wheel spin sign.

I doubt the mass air code had anything to do with it.

I'll just call it a miracle.

Still have rubbing on the rear.

So I'll consider switching to smaller tires. This things been a headache...but a fun one lol

Once you have the issue again disconnect your battery for one or two minutes. If it goes away get a full sw update at the dealer.

For your rubbing, try first more camber before buying new tires.
Cambered you're the limit. Stock arms.
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      06-06-2022, 12:44 AM   #35
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Quote:
Originally Posted by rborane View Post
MP4S in 265/35 and 305/30 have the exact same diameter of 26.3".

Factory diameter is 26" front and 26.6" rear with 255/35/19 and 275/35/19.

If I were to guess, it may have to do with running the same diameter front and rear and potentially throwing the DSC off because of it. The best bet is to try and keep the diameter difference between front and rear as close to factory as possible, or at least keep the rear diameter greater than the front to prevent any DSC issues. Sounds like maybe a wire could be a factor as well during install. I would run 275/30/19 & 295/30/19 as those diameters in a P4S is 25.6" and 26". You can also keep the 305/30 which is 26.3" and switch the front to a 275/30.

Good luck
Quote:
Originally Posted by rborane View Post
MP4S in 265/35 and 305/30 have the exact same diameter of 26.3".

Factory diameter is 26" front and 26.6" rear with 255/35/19 and 275/35/19.

If I were to guess, it may have to do with running the same diameter front and rear and potentially throwing the DSC off because of it. The best bet is to try and keep the diameter difference between front and rear as close to factory as possible, or at least keep the rear diameter greater than the front to prevent any DSC issues. Sounds like maybe a wire could be a factor as well during install. I would run 275/30/19 & 295/30/19 as those diameters in a P4S is 25.6" and 26". You can also keep the 305/30 which is 26.3" and switch the front to a 275/30.

Good luck
Remember me!?

Ended up going with 295/35/19 MO1 spec and 265/35/19 front. Been perfect.

A friend switched to a 275 front and liked the grip better so I tried it. Same issue. (And they rub the fender well enough to slow the car a bit in corners. )

Now I'm trying to find a track tire in my size and most seem to be in 285 or 305 35/19.

Suggestions?
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      06-06-2022, 05:38 PM   #36
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Quote:
Originally Posted by Sandmansc View Post
Remember me!?

Now I'm trying to find a track tire in my size and most seem to be in 285 or 305 35/19.

Suggestions?
Track tires typically run much wider in the same exact size. Now that you know what fits your car without rubbing, look at the actual tread width and section width specs for track tires and compare them against your existing tire specs. You might find some "265 mm" track tires actually measure the same width as a 295mm street tire.
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      06-06-2022, 05:39 PM   #37
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Quote:
Originally Posted by MineralWhiteF80 View Post
Quote:
Originally Posted by Sandmansc View Post
Remember me!?

Now I'm trying to find a track tire in my size and most seem to be in 285 or 305 35/19.

Suggestions?
Track tires typically run much wider in the same exact size. Now that you know what fits your car without rubbing, look at the actual tread width and section width specs for track tires and compare them against your existing tire specs. You might find some "265 mm" track tires actually measure the same width as a 295mm street tire.
Nice thanks.
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