Track forum general chit chat.

[Bartledoo]

I think we are better off trying to convince him to trade the BBK for a PFC or AP Radi-Cal kit that fits 18" wheels...

[rhyary]

Originally Posted by Grillpt

What tires are u using that last short of two days and are u wearing the fronts and the rears out that quickly?

I was on Hoosier R7 265/35/19 front.
I don't wear the rear quicky
Th front I chew the outside with -3.0 camber.
For 2020 i will be trying -3.25 or -3.5 front

[Ximian]

Originally Posted by rhyary

About alignment and suspension. My experience showed that the camber of 265/35 on expensive R7, from a wear point, is similar enough to a ECSTA PS91 265/35 or 275/30.

So I think a reasonable approach given my objectives and circumstances is to adjust my settings using a less expensive tire before I use expensive tires.

What I have proven, to myself, is that while slick 235/35 is faster than any of the high performance 265-275, the alignment is not the same.

This creates a practical choice, do I align the car two different ways? or do I align the car to the 265-275 tires and alternate between expensive R7 and Inexpensive summer tire.

What are your goals for 2020? Previously you were trying to get a specific lap time at NYST but that doesn't seem to be the case anymore. Also the "Vredestein Ultrac Vorti" tire is available in 265/35 and is around the price of the Kumho. It's a higher treadwear tire but they make pretty decent tires. I have their all-weather tires on my winter vehicle and they've exceeded expectations which is generally the feedback about Vredestein.

[Grillpt]

I'd just go straight to -3.5

[rhyary]

Originally Posted by Ximian

What are your goals for 2020? Previously you were trying to get a specific lap time at NYST but that doesn't seem to be the case anymore. Also the "Vredestein Ultrac Vorti" tire is available in 265/35 and is around the price of the Kumho. It's a higher treadwear tire but they make pretty decent tires. I have their all-weather tires on my winter vehicle and they've exceeded expectations which is generally the feedback about Vredestein.

Good question.
My best time is 1:35.7 and my Aim theoretical lap is 1:34.x (I forget)

So my goal would be to break 1:35 using either A7 or R7. @ 3500Lbs it will be difficult as very few if any cars in my class get to 1:35.

To get there, i plan to setup the suspension using 275/30 or 265/35 front and 295/30/19 rear with various tires.

I am also going to try at least once 275/35 rear and 275/30 front to experience a "square" setup.

At LRP my goal is break 60 seconds and see. my best time is 61 seconds and I feel that breaking 60 seconds is doable counting on @datka, ThunderMoose and nicksm3 knowledge and experience.

[rhyary]

Originally Posted by Grillpt

I'd just go straight to -3.5

Thanks.
I will do that.
My challenge with that decision was that in 2019 I was trying to make happy both 235/35 and 265/35 and that simply did not work. @ -3.0 I chewed the inside of the 235 and the outside of the 265.

2020 is all about 265/35 and 275/30

Is it April yet?

[ThunderMoose]

Originally Posted by rhyary

Thanks.
I will do that.
My challenge with that decision was that in 2019 I was trying to make happy both 235/35 and 265/35 and that simply did not work. @ -3.0 I chewed the inside of the 235 and the outside of the 265.

2020 is all about 265/35 and 275/30

Is it April yet?

I hit the track in 3 weeks!

[m13s]

You should do some time trials instead of chasing lap times using tires that are counter to your goal of dropping lap said lap times.

[rhyary]

Originally Posted by m13s

You should do some time trials instead of chasing lap times using tires that are counter to your goal of dropping lap said lap times.

I am not chasing lap-times when I am not on the Hoosiers R7 or A7. i am chasing other things and keeping close watch on the lap time. There is a difference.

[Datka]

Originally Posted by b4hand

Something like this? https://www.ebay.com/itm/07-13-BMW-3...8AAOSwX~dWsr5o

Yes. Mine looks exactly like that
With APR wing back of the car looks great

[romero1990]

Do you guys replace stock oil cooler in the front or just stay with stock? I noticed even at current norcal 53F weather, I will still get 210F oil temp on gauge on street and I can see it move up by 10-20F if I Rev up about 4K rpm. Good thing is it cools down fairly fast after I drop rpm(upshift). But the cool down is only a hair below 210 ( say 10-20F below 210F)

[m13s]

Originally Posted by rhyary

I am not chasing lap-times when I am not on the Hoosiers R7 or A7. i am chasing other things and keeping close watch on the lap time. There is a difference.

I call b.s. watching equals chasing.

[Ximian]

Originally Posted by romero1990

Do you guys replace stock oil cooler in the front or just stay with stock? I noticed even at current norcal 53F weather, I will still get 210F oil temp on gauge on street and I can see it move up by 10-20F if I Rev up about 4K rpm. Good thing is it cools down fairly fast after I drop rpm(upshift). But the cool down is only a hair below 210 ( say 10-20F below 210F)

That's standard for stock. If you replace the oil cooler with a bigger one, you may also need to replace the radiator.

[Grillpt]

I rarely time myself, but when I do, I look for consistency while driving within my comfort zone

[kyippee]

Timing is ok, my Waylens camera does timing + transponders keep track as well. But I don't check until the session is over and then I surprise myself

Even if I'm not hitting new PBs, I do get positive feedback when I see I'm hitting consistently faster times. (such as consistent 2:00-2:02s with a 1:59.3 PB vs before doing consistent 2:02-2:04 with 2:00.06 PB)

[gmx]

Originally Posted by rhyary

Good question.
My best time is 1:35.7 and my Aim theoretical lap is 1:34.x (I forget)

So my goal would be to break 1:35 using either A7 or R7. @ 3500Lbs it will be difficult as very few if any cars in my class get to 1:35.

To get there, i plan to setup the suspension using 275/30 or 265/35 front and 295/30/19 rear with various tires.

I am also going to try at least once 275/35 rear and 275/30 front to experience a "square" setup.

At LRP my goal is break 60 seconds and see. my best time is 61 seconds and I feel that breaking 60 seconds is doable counting on @datka, ThunderMoose and nicksm3 knowledge and experience.

Do some reading on tire modelling; physical displacement properties and slip angle.

If each tyre displaces differently, your setup is irrelevant or not-optimal. Anecdotally, this has happened countless times in motorsport where the tender is won by a new supplier. From series where basic R-comps are tendered to slicks at high levels.

[roastbeef]

Originally Posted by romero1990

Do you guys replace stock oil cooler in the front or just stay with stock? I noticed even at current norcal 53F weather, I will still get 210F oil temp on gauge on street and I can see it move up by 10-20F if I Rev up about 4K rpm. Good thing is it cools down fairly fast after I drop rpm(upshift). But the cool down is only a hair below 210 ( say 10-20F below 210F)

sounds like normal behaviour, partner.

[StripclubDJ]

Originally Posted by roastbeef

sounds like normal behaviour, partner.

He's not your partner , buddy

[roastbeef]

i'm not your buddy, pal.

[Bartledoo]

He's not your pal, guy.

[romero1990]

I'm all yours, lads

[StripclubDJ]

Originally Posted by romero1990

I'm all yours, lads

We aren't your lads, friend.