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I run at VIR all the time. The two long straights are not were you make time. It's on the other areas... The longest straight is the back (approx. 4300feet) but you enter that from turn 12...

Glad to here this. I have been 'quietly' monitoring this thread.

While you are getting yours back, mine is now up on stands. I had a run in with a tire wall this weekend and the repairs are in...

While I would not give up my ///M Coupe', I think a hard top E89 with a V8 would make it a nice garage mate...... Hardtop only, since you cannot take a folding hardtop on the track....

I had a really good time. The best part for my was my 60 min. talk with James Clay on driving techniques and usable upgrades..

Did some searching and found the torsional rigidity data on the E9X. 24,000Nm are the numbers for E90 sans fold down seats, ~19,500Nm is the E92.

I have not been able to find any solid torsional...

Ok, here are the pictures, taken in January just after I installed it.

Installation only took me about four hours.

My mounting is almost identical to his except for the two small turnbuckle...

I don't know what the chassis rigidity is for the E90 series, but the chassis rigidity for the Z4 Roadster (M and non-M) is 16000 Nm/deg. Just for a data point, the Z4 Coupe's chassis rigidity is...

The way that I understand it after reading, he switched not just because of the V10 but also because he could not dial in the suspension settings he wanted consistently.

He was looking for a...

Thanks.

Good info...

FR305,

Why did you not just start with a Z4M that way you would not have to do a transplant or upgrade the other components?

This is not a criticism. I just would like to know you’re though...

I have that splitter on my car now. After two track days with it on, I can tell you that it helps out, A LOT...

I have another track weekend in May.

As a general rule of thumb, for every pound of unsprung weight you lose, it equates roughly to 10lbs of total weight.

Just for sake of accuracy, the E85 is the Roadster and it's M variants time was 8:15. The Coupe is the E86 with the M variant running 8:12, though that is not an official BMW time.

The E46 uses a MS S54 ECU. The Z4M uses a MS S70.

I have heard other things like 'the the MS S70 ECU is very similar to the M5/M6 ECU's', but do not know.

The M5 & M6 uses a MS S65 ECU and as...

Sounds like a research project.

I don't think that applies to the Z4Ms. We have a newer, faster ECU than the E46 M3, which is why so few tuning mods apply to our cars; the tuners didn't bother cracking the ECU for such a small...

fr8tdog

This is an interesting thread. If I remember you are running a Z4M, correct?

I have been lead to believe that the ECU on the Z4M is way different than what is on a E46 and is very...

Thanks.

It drives better than it looks...

Done

My 2008 Z4MC. 12600 miles.

http://www.bimmerboost.com/images/imported/2010/05/2377.jpg


My Wife's 2003 Z4. 66000 miles.

Tail of the Dragon. Car is dirty. Rained for two days and on the...

I like the idea of the weight, but not the style. Must be personal preference.

I have ACS Type III Racing wheels on my wife's Z4 Roadster.

As another Z4MC owner here, nice ride.........

The Z4M Coupe curb weight is 3230lbs. That is from the owners manual.

My 2003 Z4 Roadster had 65K. Only minor issues. But I did pull the Vanos to replace the internal O-rings.

My 2008 Z4M has 10K, but I bought it in Feb. and it only had 4100 miles on it.... I...

Your DCT upgrade thread is pretty good encore.