Teach me about ITR 325's

[GKR_17]

I think this subject is pretty gray...

Ridiculous. Not even remotely legal, or gray.

[GKR_17]

Oh come on.. those bushings suspend the calipers right? Give me a break. Anyone remember when they tried to justify internal coatings because they were "lubricants"? That didn't fly either.

[mlytle]

some folk have trouble wih engish. suspend as a verb vs. the gcr use of suspension as a noun...

[ekim952522000]

Does anyone have a link to the bushings you guys are talking about?

[JoshS]

Does anyone have a link to the bushings you guys are talking about?

Here you go Mike:

http://www.turnermotorsport.com/html...ODUCT_ID=CBMW1

The issue is that all of these cars have single-piston sliding calipers, and the caliper slides on metal pin, but with a rubber bushing. The brake can feel really squishy and cause uneven pad wear due to the flexibility in the rubber, especially as the pads get low and the piston is extended.

These metal replacements are very common for track cars and BMWCCA club racing.

[Ron Earp]

The issue is that all of these cars have single-piston sliding calipers, and the caliper slides on metal pin, but with a rubber bushing. The brake can feel really squishy and cause uneven pad wear due to the flexibility in the rubber, especially as the pads get low and the piston is extended.

Oh my goodness!!!

You mean the designers of The Ultimate Driving Machine have made an engineering error that leads to their creation having a perceived flaw for track use?

No way, I don't believe it. All the BMW Club track days start out with "Your BMW was born and bred for the track, it'll be fine to use just as is...."

Heaven forbid we get uneven pad wear and a really squishy pedal.....Jeez, I wish that was all I had to worry about on my IT dinosaur.

[dj10]

Oh my goodness!!!

You mean the designers of The Ultimate Driving Machine have made an engineering error that leads to their creation having a perceived flaw for track use?

No way, I don't believe it. All the BMW Club track days start out with "Your BMW was born and bred for the track, it'll be fine to use just as is...."

Heaven forbid we get uneven pad wear and a really squishy pedal.....Jeez, I wish that was all I had to worry about on my IT dinosaur.

Easy Ron, I don't want to see you stroke out on us.

[mlytle]

Here you go Mike:

http://www.turnermotorsport.com/html...ODUCT_ID=CBMW1

The issue is that all of these cars have single-piston sliding calipers, and the caliper slides on metal pin, but with a rubber bushing. The brake can feel really squishy and cause uneven pad wear due to the flexibility in the rubber, especially as the pads get low and the piston is extended.

These metal replacements are very common for track cars and BMWCCA club racing.

there are ways to avoid squishy pedal and angled pad wear as they get low without using illegal metal bushings.....

[Doc Bro]

Oh come on.. those bushings suspend the calipers right? Give me a break. Anyone remember when they tried to justify internal coatings because they were "lubricants"? That didn't fly either.

And air as a bushing is justifiable in your mind....give me a break. Is air then justifiable as a washer bottle or wiring harness in your mind?

R

[Andy Bettencourt]

And air as a bushing is justifiable in your mind....give me a break. Is air then justifiable as a washer bottle or wiring harness in your mind?

R

Can you cite someone/some car who actually does this and claims it's legal? I think it's bantered about but in reality it's internet folklore.

[Doc Bro]

Can you cite someone/some car who actually does this and claims it's legal? I think it's bantered about but in reality it's internet folklore.

No AB. I know no one. But I remember the discussions about it ad nauseum, as I know you do.

My comments were only directed at the fact that the GCR offers no clarity on the questions I posed. Next thing you know I'm a rules creeper. As I stated mine are stock rubber, period. Reminds me of the RX7 1st gen rear wing guy.....easy to see why he made the mistake....even easier to see why he got beat up here. I guess I learned my lesson....I'll spend more time with my family and less time on IT.com. I'll let the "pro's" chase windmills.

R

[Andy Bettencourt]

*I* don't feel like the GCR has to offer clarity to the questions you posed Rob, because *I* don't feel you have posed reasonable questions.

The bushings on your racecar are not free. Suspensions bushings may be replaced. Has nothing to do with brakes. By your logic, engine mounts would be free because they are bushings. Just not true.

The section of the ITCS in which an allowance is given IS applicable.