CO track thread

[blefevre]

I can't wait to get track tires on the D-forces. Hartges aren't light!

[Bimmerman325i]

I can't wait to get track tires on the D-forces. Hartges aren't light!

For sure. You going with the 225 RS3?

[blefevre]

Yeah, I think I would regret going to a 205.

[iamsam]

David, i was comparing MY wheels/tires to Ben's 17s. Mine had a smaller OD.

Also, I am pretty confused at your reasoning. Why are you comparing the OD of a tire to the dia of a rim?

Also, to stop the car, the wheel DOES apply torque to the brakes, or more specifically, the brakes need to supply a torque to the wheels to slow them down. With bigger OD, the torque needed is much higher, even if rotational mass was held constant. If you had reeealy tall skinnies like bike tires (hypothetically), you would need alot more braking power for the same car, and same size brakes, and while retaining same rotational mass. Every action has an equal and opposite reaction...

disclaimer: I didn't do a whole force analysis on this, I am just thinking through this atm with just intuition.

[fsmtnbiker]

Nylon's melting point is just under 500 degrees F. If you like those shims, don't leave them in when you go to the track.


There are *no* good pads that you can also take to the track. The only way to do it right is to have 2 sets of pads. You can swap them on the same rotors without much issue.

[iamsam]

Nylon's melting point is just under 500 degrees F. If you like those shims, don't leave them in when you go to the track.


There are *no* good pads that you can also take to the track. The only way to do it right is to have 2 sets of pads. You can swap them on the same rotors without much issue.

you mean no good street pads that are also good track pads? That does seem to be the case. I am sure my nylon shims will melt as soon as I go to HPR again, but until then....

Also, getting street pads is a good idea, because good track pads are do dang expensive.

[Roland H]

And running a street pad on the street and a track pad on the track will give you much better rotor life than a cross-over or a full track pad on the street.

[iamsam]

I think I should start doing this. My HP+ pads put out so much dust I have to vacuum the street every time I come home.

Someone once told me that swapping pads alot was a bad idea because the pads would conform to the rotor, and each time you swapped pads they had to re-conform or something, and they would wear down fast. I guess it seems like that wouldn't actually happen, because the rotor surface would change very little in between pad changes.

[blefevre]

I know it's not IDEAL. That's not what I am looking for. I am looking to save 200 by not buying another set of pads that I don't really need for learning purposes. Ben did just fine with HP+ for a lot of learning.

[iamsam]

Brad, what pads are you wanting? sorry I am confused as to what your agenda with this is.

[Roland H]

I know it's not IDEAL. That's not what I am looking for. I am looking to save 200 by not buying another set of pads that I don't really need for learning purposes. Ben did just fine with HP+ for a lot of learning.

It's a good way to manage your brakes. It's also a good way to put your car into a wall if you mis-manage your brakes (unlikely, but possible).

[blefevre]

Brad, what pads are you wanting? sorry I am confused as to what your agenda with this is.

I wan't one set of pads that I can DD and take to HPR for open lap days. I don't want to buy $400 worth of pads right now. If that is impossible to do then I guess I will have to wait.

[iamsam]

I DD my HP+'s every day. They are great track pads, but on the street they just squeal a bit. Totally streetable though, if you can deal w/ the squealing. If not, get the nylon shims, and just replace the shims after a track day. Problem solved.

[blefevre]

It seems like the best solution. I don't know what the HP+ hate is all about. I'm not doing time trials or extended sessions. I just want to learn and have fun!

[Roland H]

I DD my HP+'s every day. They are great track pads, but on the street they just squeal a bit. Totally streetable though, if you can deal w/ the squealing. If not, get the nylon shims, and just replace the shims after a track day. Problem solved.

How are you going to separate the nylon once its melted to the pad and around the piston?

It seems like the best solution. I don't know what the HP+ hate is all about. I'm not doing time trials or extended sessions. I just want to learn and have fun!

They aren't bad on the E30. I wouldn't ever run them on teh E36, but I would consider running them on an E30 if I had one. But honestly, nothing beats the right pad for the right use. Just like snow tires for the snow, and sticky tires for events.