At what mileage did you start to notice appreciable rear traction issues?

[Mr. Wilson]

At roughly 14k on the odometer with stock 285 20 PSS in the rear. Stock suspension but Dinan stage 3 so the torque is slightly up on the low end. I don't push the car much and although I have tracked, it hasn't been with this M3. Finally seeing some 60-70 degree weather so the car is feeling slightly stronger then our standard humid 80-90s. Just looking for input by others as to their experience for those who aren't running big power and don't drive like its stolen. Threads have mentioned these things in the past but I don't recall if they addressed the ZCPs slightly different parameters then the standard configuration.

I am talking about Dry conditions ......

Thanks

[nicknaz]

1

[hellokitty]

Tell me about it. Probably going to run 305s soon.

[aajjcc]

0.01

[Alpine300zhp]

Originally Posted by nicknaz

1

Yep. I learned to roll on the throttle within the first 20 miles.

[Bigsurprise]

I think these guys are a little crazy I noticed around 750 miles or so, but then I knew for sure it was a problem at 1500 miles when I installed BMS Stage 1. I wasn't too comfortable pushing the car until it had some good low key commute miles on it. Now that I have tasted the entire RPM range I understand how much power it really has.

I truly believe the power can overwhelm the chassis. I think that makes the car more characterful.

[jmg]

1200. Right after break in and the fun began.

[Mr. Wilson]

Well thanks guys for the serious answers..... This has lend nothing to the subject. Saying things like 1 mile or after break in does nothing to help one gauge how these tires are wearing for those of us who drive reasonably but enjoy the car. For those adults out there please feel free to state something that enriches this community.

[Ian1973]

Pretty much in roll on situations, once the torque peak hits in the first three gears, it's breaking lose. It was noticed immediately. But gets worse when the tires start to age.

[tooshay]

10 miles, so I went with a wider rear wheels and wrap it with the PS4s.

[rosenbergendo]

295 rears still spin in first three gears with JB stage 1! Might do cup2’s next time!

[neilum]

Not clear what you are looking for exactly, but almost immediately it was obvious the car needed serious rubber. I would say within a month of owning it there was no doubt in my mind the lack of traction out back was impacting my experience.

Even if you aren't driving hard or are 100% stock the factory power is WAAAAY to much for the OEM rubber. It feels like with this car from the factory is comes like a tuned car, so IMO tuned or not it doesn't really matter when it comes to this subject. ZCP or base I also feel it doesn't make a difference, they are both really "undertired."

After a bunch of thought and research I decided on 295 Advan AD08R's in the rear and I would never think about going back to anything less. IMO this is a prerequisite for enthusiasts, or rather people who know better.

I have 255/35/19 in front and 295/30/19 out back..

Not only does it look badass but it helped put the power down tremendously.

It still fights for traction but it puts up a really good fight, before the upgrade it was just fruitless and downright annoying.

Here's a picture of my old PSS vs the new tires. This should speak for itself.

[IMG]

View post on imgur.com

[/IMG]

[SenorFunkyPants]

Out of interest when you guys loose traction....is it mostly one wheel that spins up and the DSC cuts in or is it both rear wheels spinning up together?

[M4Now!]

When I test drive one

[Bigsurprise]

Originally Posted by SenorFunkyPants

Out of interest when you guys loose traction....is it mostly one wheel that spins up and the DSC cuts in or is it both rear wheels spinning up together?

For me it is with DSC off. Both wheels. Obv this is using heavy throttle.

[SenorFunkyPants]

Originally Posted by Bigsurprise

For me it is with DSC off. Both wheels. Obv this is using heavy throttle.

Ah OK....for me, anytime I jumped on the throttle with DSC on, or in MDM, one rear wheel would spin up causing the DSC to cut in - which was pretty annoying. (noting that mine is a 2017 euro cp car).
So I changed out the BMW diff oil for std Castrol syntrax 75w140 (SAF-XJ) and that has really improved the locking action of the diff so that now rear traction is not lost until both rear wheels are spinning. The benefit being better overall traction.

With DSC off, I think the electronic control of the diff is anyway far more aggressive as even in my car (with the old BMW diff oil) the diff would lock up at the first sign of loss of traction.

Apparently the diff electronics includes a software routine to periodically reset the locking pressure of the diff clutch pack every so many miles. It seems to me that you can tell when its been done as from one drive to another the diff locking suddenly feels more aggressive,

[jstnstr]

Yeah I'm gonna go with immediately, as well.

[Naz24]

Originally Posted by Mr. Wilson

At roughly 14k on the odometer with stock 285 20 PSS in the rear. Stock suspension but Dinan stage 3 so the torque is slightly up on the low end. I don't push the car much and although I have tracked, it hasn't been with this M3. Finally seeing some 60-70 degree weather so the car is feeling slightly stronger then our standard humid 80-90s. Just looking for input by others as to their experience for those who aren't running big power and don't drive like its stolen. Threads have mentioned these things in the past but I don't recall if they addressed the ZCPs slightly different parameters then the standard configuration.

I am talking about Dry conditions ......

Thanks

Perhaps youre looking at this wrong.

the 65-70 degree weather isn't helping the engine as much as it is HINDERING the tires.

Summer tires + Colder weather do not mix.

[Mr. Wilson]

The cooler temps are definitely affecting the tires and of course the engine is making slightly more power but generally speaking in the past 500 or so miles I am seeing a substantial different in traction regardless of temps. Although 70s aren't to cold but you point is well taken.

The point of the thread was to ask others at what miles did they see an appreciable change in rear traction grip. Maybe if I said "change" in the title it would be more apparent what I meant. These comments of 1 mile or after break in period are analogous to saying the sky is blue. Of course the car can break the tires loose if you give it to much throttle. At some point though a threshold is reached and the tire can no longer maintain their prior grip. For me that was around 14k. Wanted to see when others experience this on stock setup.

What is interesting is that I still have mediocre safe tread yet dry grip is starting to lack. The science behind modern tires are remarkable and sometimes just having tread doesn't correspond to having sufficient compound to hook the tires. Really what I should be asking is not mileage but tread depth.

[wicked1044]

Got a pic on the car? Im looking to see how it fills out the fenders.

Originally Posted by neilum

Not clear what you are looking for exactly, but almost immediately it was obvious the car needed serious rubber. I would say within a month of owning it there was no doubt in my mind the lack of traction out back was impacting my experience.

Even if you aren't driving hard or are 100% stock the factory power is WAAAAY to much for the OEM rubber. It feels like with this car from the factory is comes like a tuned car, so IMO tuned or not it doesn't really matter when it comes to this subject. ZCP or base I also feel it doesn't make a difference, they are both really "undertired."

After a bunch of thought and research I decided on 295 Advan AD08R's in the rear and I would never think about going back to anything less. IMO this is a prerequisite for enthusiasts, or rather people who know better.

I have 255/35/19 in front and 295/30/19 out back..

Not only does it look badass but it helped put the power down tremendously.

It still fights for traction but it puts up a really good fight, before the upgrade it was just fruitless and downright annoying.

Here's a picture of my old PSS vs the new tires. This should speak for itself.

[IMG]

View post on imgur.com

[/IMG]

[hellokitty]

Originally Posted by Mr. Wilson

The cooler temps are definitely affecting the tires and of course the engine is making slightly more power but generally speaking in the past 500 or so miles I am seeing a substantial different in traction regardless of temps. Although 70s aren't to cold but you point is well taken.

The point of the thread was to ask others at what miles did they see an appreciable change in rear traction grip. Maybe if I said "change" in the title it would be more apparent what I meant. These comments of 1 mile or after break in period are analogous to saying the sky is blue. Of course the car can break the tires loose if you give it to much throttle. At some point though a threshold is reached and the tire can no longer maintain their prior grip. For me that was around 14k. Wanted to see when others experience this on stock setup.

What is interesting is that I still have mediocre safe tread yet dry grip is starting to lack. The science behind modern tires are remarkable and sometimes just having tread doesn't correspond to having sufficient compound to hook the tires. Really what I should be asking is not mileage but tread depth.

What you are saying is pretty consistent with my experience on my 335is. After 15k miles, I’m slipping and sliding all over the place. Still have tread left on the tire but the slip is much more noticeable. Time to swap them out. My tire tread gauge is coming this week so I’ll be able to take a measurement then.

[Threeebowel]

Originally Posted by Mr. Wilson

The point of the thread was to ask others at what miles did they see an appreciable change in rear traction grip. Maybe if I said "change" in the title it would be more apparent what I meant. These comments of 1 mile or after break in period are analogous to saying the sky is blue. Of course the car can break the tires loose if you give it to much throttle. At some point though a threshold is reached and the tire can no longer maintain their prior grip. For me that was around 14k. Wanted to see when others experience this on stock setup.

Likely the issue causing you to receive the answers you're getting is that you don't mention tires anywhere in the title of the thread. When you ask, "What mileage did you start to notice appreciable rear traction issues?", I automatically think about vehicle mileage as this is the general forum and mileage is almost always in reference to overall vehicle mileage for members who read regularly.