Track forum general chit chat.

[Bartledoo]

Originally Posted by aututto

Wow what track is that? Looks beautiful with the trees in the background! Car looks great too!

The Ridge Motorsports Park. Quite a beautiful track. Mt. Rainier can be seen from the track, so you have to be careful not to drift off staring at it sometimes.

[Dreamer99]

Originally Posted by Bartledoo

For sure on all counts (except being a wuss!).

Ideally I'd have 10.5/11" wheels, but then I would've run the wider 295 A052 for the event as they seem to be even faster. I would not put those fatties on a 10" wheel. The 295 AR-1 are pretty skinny (for a 295) though.

Also, my buddy whipped out a temp gauge at the end of the last session (yea where was that the whole day?) and it's possible I could've used a bit more pressure. Was running 33ish measured after a cool down lap, and didn't have any shoulder rollover, though.

Are you running a AR1 275/295 set or 295 square? Do you flip the tires side to the other side and run them backwards to even out the wear?

[Bartledoo]

Originally Posted by Dreamer99

Are you running a AR1 275/295 set or 295 square? Do you flip the tires side to the other side and run them backwards to even out the wear?

295 square on 18x10. I flipped them from one side of the car to the other after a few sessions, mainly because this track is much harder on right side tires than left. As for wear, I only have 5 10-15min sessions on them, and based on other people's experience I expect them to heat cycle out well before the rubber wears away.

[M3MPH1S]

Originally Posted by aututto

Just finished a hot weekend at heartland park. 95-100 both day's but glad to get out finally. Only two issues were, 2nd day I was a dummy and set the parking brake at lunch, started to get the e brake shoes clunking at the end of my last two sessions.

And this, front right was taking some heat, and 10 year old powder coated wheels couldn't take it I guess?

Let's not forget that wheels are also a consumable item

[k_mann]

Oh yeah I had another question for you guys. I noticed once my brakes would heat up I'd get a little judder on hard braking. I'm running pfc08 pads, SS lines, everything else stock. Is it most likely uneven pad deposit?

[roastbeef]

Originally Posted by aututto

Oh yeah I had another question for you guys. I noticed once my brakes would heat up I'd get a little judder on hard braking. I'm running pfc08 pads, SS lines, everything else stock. Is it most likely uneven pad deposit?

Most likely, yes.
How old are the rotors? Inspect the inside of the rotor face as well, it usually gets hotter.

[k_mann]

Originally Posted by roastbeef

Most likely, yes.
How old are the rotors? Inspect the inside of the rotor face as well, it usually gets hotter.

That's a good question I'm not sure! lol. I'd assume they're a little old, only ever had OEM pads on them before

[Ximian]

I've never had pad deposits from PFC 08s, it doesn't seem likely to me considering it's a pretty abrasive pad. I did have some confuse locking up with ABS kicking in as brake judder.

Do you have the PFC 08s on the front and rear?

[tsk94]

In my experience you'll get pad build-up on the rotor when driving them on the street with PFC pads. My car leaves deposits when driving it from where it's stored over the winter to back home and it's only ~25mile drive. Goes away after 1 lap on track though.

[Bartledoo]

I never had any brake judder/vibration running PFC08 on stock calipers/rotors. Never swapped them out for street pads either.

[M3MPH1S]

Originally Posted by aututto

Oh yeah I had another question for you guys. I noticed once my brakes would heat up I'd get a little judder on hard braking. I'm running pfc08 pads, SS lines, everything else stock. Is it most likely uneven pad deposit?

Maybe, but if your wheels are really 10 years old, I'd take them to an enthusiast shop and get them to check the roundness. I went through a similar issue as you, no wheel vibration under any other conditions except heavy braking and it turned out that my wheels were just slightly out of round due to normal wear and tear.

[k_mann]

Originally Posted by M3MPH1S

Maybe, but if your wheels are really 10 years old, I'd take them to an enthusiast shop and get them to check the roundness. I went through a similar issue as you, no wheel vibration under any other conditions except heavy braking and it turned out that my wheels were just slightly out of round due to normal wear and tear.

Yeah I was just thinking that. It actually may be the tires. The wheels were smooth before. But once I put these pss on (an extra brand new set original owner had) I've always gotten intermittent vibration around 80mph. I might just need to double check my rotors too. It's insanely faint on track once hot, smooth everywhere else

[k_mann]

Originally Posted by Ximian

I've never had pad deposits from PFC 08s, it doesn't seem likely to me considering it's a pretty abrasive pad. I did have some confuse locking up with ABS kicking in as brake judder.

Do you have the PFC 08s on the front and rear?

Ah that's a good call I didn't even think of that

[Ximian]

Are there Slon DCT pan install instructions? I don't think I'll have time to do it myself, but I would like to provide something for the shop to review to come up with an estimate.

I've seen: https://www.m3post.com/forums/showth...158445&page=33

[kyippee]

Ximian Dogbone's post is what I shared with a local shop. It was enough They were able to figure out what they needed to do.

[k_mann]

Update just tracked tonight and turned off dsc. braking felt much better/consistent. I think traction really overdoes the front right. Fellow e92 said traction will wear his front right pads twice as fast there.

Either way, glad to be driving without traction, it was fun re learning corners tonight!

[Kelse92]

Originally Posted by aututto

Update just tracked tonight and turned off dsc. braking felt much better/consistent. I think traction really overdoes the front right. Fellow e92 said traction will wear his front right pads twice as fast there.

Either way, glad to be driving without traction, it was fun re learning corners tonight!

Nice! DSC I noticed some when I used it learning cuts power too at corner exit. Definitely much better with it off!

[bigjae1976]

E9X M3 traction control at any level makes the car slower. Period. MDM, Euro MDM...I can drive a faster and cleaner lap without the nannies.

One area where the E9X M3 is much better than the E46 M3 is suspension design. When you apply throttle, weight shifts rearwards and squats. As the rear suspension compresses there is an increase of toe in. This makes the rear end want to straighten up. Combined with a decent LSD which provides a lot of lock up (although too slow)...it is hard to spin the car.

The E46 M3 does the opposite. It toes out so if you get sideways, you need more opposite lock and much more precision on the throttle. It find it pretty easy to spin my E46 M3.

The E90 M3 with DSC off. Doesn't want to go around but wants to go off on the inside.

Vs my E46 which just spins

[//steve\\]

Originally Posted by aututto

Update just tracked tonight and turned off dsc. braking felt much better/consistent. I think traction really overdoes the front right. Fellow e92 said traction will wear his front right pads twice as fast there.

Either way, glad to be driving without traction, it was fun re learning corners tonight!

Originally Posted by Kelse92

Nice! DSC I noticed some when I used it learning cuts power too at corner exit. Definitely much better with it off!

I really need to try driving the car some more with everything off. My car is Euro MDM coded and it does let you drive pretty hard. I'm wondering if some of the weirdness I've felt out of the rear of the car isn't actually the car stepping in.

Will you always get some kind of light on the cluster when the car is stepping in or will it reel you in a bit without it being obvious?

[k_mann]

Originally Posted by Kelse92

Nice! DSC I noticed some when I used it learning cuts power too at corner exit. Definitely much better with it off!

Yep! I definitely was significantly quicker with it off. It took a second to build the confidence up on exits. But you soon realize the MDM was really ruining your cornering abilities. I only had issues of slight oversteer on turns I leave in 2nd gear. Otherwise plenty stable, and faster!

[rhyary]

Does anyone here bother to clean the disk holes from the pads material?
.

[WhiteM3EMC]

Originally Posted by //steve\\

I really need to try driving the car some more with everything off. My car is Euro MDM coded and it does let you drive pretty hard. I'm wondering if some of the weirdness I've felt out of the rear of the car isn't actually the car stepping in.

Will you always get some kind of light on the cluster when the car is stepping in or will it reel you in a bit without it being obvious?

I'm not sure which context you're talking about (street/track) but my first track day in the M3 (had several other track days in previous car) my buddy recommended that I leave the DSC on, it was Euro MDM coded. The light on the dash seemed to come on as soon as the car stepped in and it was WILDLY intrusive. I turned it off after the 3rd corner on the out lap. It completely prevented me from turning the car with the throttle, and basically would not let me apply throttle if the car was not pointed in a straight line.