Quote:
Originally Posted by Sleeper519
I hear ya, point taken. My previous comments were sincere, but with some added hyperbole and tongue-in-cheek in response to all the "just drive slower" comments. 
However, I am driving on a stock suspension (with the exception of camber plates @ -2.6) and R-comps, and I am not tearing up tires at all. As a matter of fact, I think I manage my tire wear better than a lot of my track mates. Conversely, i refuse to track my street tires anymore at all because I can flat out destroy them in a day or two driving with the same setup. Point being is that R-comps will hold up under aggressive driving FAR better than any street performance tire, IMO. I choose to not get coilovers and upgraded bushings because its my DD and I LOVE my street ride with EDC. (Some will say that I can retain comfy street ride with the right coilies but I remain skeptical...).
I do agree that camber plates are a big key for tire management.
The suggestion that he upgrade to a BBK is based on OPs other thread about burning up all manner of pads and getting persistent shimmey with his (inferior) stock brake system. Others will say that he is in some fashion not braking properly. I say that the stock brake system simply isn't cut out for rigorous tracking. I went thru similar travails as he did. I would say the StopTechs are my single most favorite mod for the track. 
Cheers. |
JRZ RS Pro on street settings (for me, 3 clicks from softest) is far more comfortable than stock suspension. Far more. It's been confirmed by 4 E9x M3's here in SoCal, including mine.
How much more supple and superb it is over stock/EDC was immediately noticeable when I went from stock to JRZ on my 2011 E90 M3. Then, a couple of years later, I traded it in for a 2013 E92 M3 and was stock while the car was being broken in and I hated the stock/EDC ride on the streets after being used to JRZ. Couldn't wait to get the JRZ on the car.
Quote:
Originally Posted by White 13
I was thinking a tire with low pressure would flex more, roll over more, build more heat and be more likely to chunk the outside edges. Higher pressure would seem to keep the tire off the edges. I had a set of PSS chunk to the cords while nearly new and I am trying to learn more.
Original set of Continentals had some small chunking in the center towards the end of their life. I am thinking maybe a little wheel spin and maybe too much pressure.
What hot pressure do you now shoot for?
Thanks.
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31 psi hot during summer months & 32~33 psi in winter months. On R-comp's (NT01 & TD).
Been tracking only 40 months so far and I progressed from PS/2 to PSS to AD08 to R-S3 to NT01 and TD. Seems like eons ago when I last tracked street tires...
Yes, generally "tire with low pressure would flex more, roll over more," but the flip side is, the lower the pressure the more the tire's gonna sag and thereby you wind up with more rubber contact patch area. Anyhow, the trick is to set it low as possible without the sidewalls rolling over. At 31 psi hot on R-comp's, many of us find that if you run'em hot enough (i.e. at certain pace), it's just the right pressure. On the sidewalls of NT01, there are these triangle marks and you want the scruff marks to come just to the up-pointed tip of said triangles.
Edit: as for street tires, I'd suggest 34 to 37 psi hot.