How did you prepare your E39 for the track? - Page 3 - BMW M5 Forum and M6 Forums
Track, Racing and Drivers Education This is related to your driving on track and racing with your M5

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post #21 of 34 Old 24th February 2008, 01:57 AM
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Quote:
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Did anybody make some videos yet?
What are you looking for a video of??

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post #22 of 34 Old 24th February 2008, 03:35 AM
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Well, Machtig mentioned posting a video and S62PWR was going to tell us about his first track experience with the beast. It's been awhile since the last post, and I was interesting in hearing more of what people are doing at the track...


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post #23 of 34 Old 26th March 2009, 09:01 PM
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please tell me how can i start a good race???

i am new here.i have an e39 bmw m5 year 2001

i know that i must OFF the DSC, but how about the rotation of the turometer??how will be??2500??3000?

thx
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post #24 of 34 Old 10th December 2009, 11:39 PM
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Hey I just wanted to say that this thread helped me out a lot. My only question is, is running 275's in front a major improvement? has anyone run something smaller?

"The E60 is the fastest, but the one I'd want to drive home would be the E39" -Evo Magazine (March '10)
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post #25 of 34 Old 11th December 2009, 12:21 AM
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I have run both 245's and 275's up front. The 275's are a MAJOR improvement. The car is heavy (as you know) and will tend to "push" or understeer at the limit. The 275's really help to neutralize this. Watch your tire pressures closely when you go to the track, try and keep them about 40-42 hot.

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post #26 of 34 Old 11th December 2009, 12:32 AM
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Originally Posted by TiSiBeast View Post
I have run both 245's and 275's up front. The 275's are a MAJOR improvement. The car is heavy (as you know) and will tend to "push" or understeer at the limit. The 275's really help to neutralize this. Watch your tire pressures closely when you go to the track, try and keep them about 40-42 hot.
Is it really neccessary to run 275's in front or can I fix the understeer with a rear sway bar? I went to an HPDE event at Gingerman in Michigan last year and didn't have too much of an understeer problem, but then again I was going 75% because it was my first time there.
-Tyler

"The E60 is the fastest, but the one I'd want to drive home would be the E39" -Evo Magazine (March '10)
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post #27 of 34 Old 11th December 2009, 06:38 PM Thread Starter
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You don't have to do anything (except good proactive maintenance, bleed brakes, etc.) to enjoy the track, but as you improve, you begin to want to push harder, and when you push is when you really notice the understeer. Tuning can be relatively simple or black magic complicated. Here is an interesting link I found, kinda focused on drifing, but I liked it. Link Remember that the tires are part of the overall spring rate and you can play with tire preaures to good effect. When I had my M5, I focused on brakes first (Pagid race, Yellow, and a brake cooling kit) next is the common overheat problem w/ the TWS Castrol 10W-60. I was going to switch to either the European Formula Mobile 1 or Redline; \RL water wetter in the radiator, but I've since sold the car. Next step was to change the front wheel width to match the rear. All these things are well documented on this great board. I tend to focus on fixing things that can shorten your day at the track, brakes, over heating and then go for speed. It sucks when something breaks and shortens your day after weeks, months of planning.



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post #28 of 34 Old 11th December 2009, 09:20 PM
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Quote:
Originally Posted by S62PWR View Post
You don't have to do anything (except good proactive maintenance, bleed brakes, etc.) to enjoy the track, but as you improve, you begin to want to push harder, and when you push is when you really notice the understeer. Tuning can be relatively simple or black magic complicated. Here is an interesting link I found, kinda focused on drifing, but I liked it. Link Remember that the tires are part of the overall spring rate and you can play with tire preaures to good effect. When I had my M5, I focused on brakes first (Pagid race, Yellow, and a brake cooling kit) next is the common overheat problem w/ the TWS Castrol 10W-60. I was going to switch to either the European Formula Mobile 1 or Redline; \RL water wetter in the radiator, but I've since sold the car. Next step was to change the front wheel width to match the rear. All these things are well documented on this great board. I tend to focus on fixing things that can shorten your day at the track, brakes, over heating and then go for speed. It sucks when something breaks and shortens your day after weeks, months of planning.
Wow thank you. That link really helped. I agree with you on the proactive maintenance. I know I have to upgrade the brakes considering I almost completely roasted them. Figured I go stoptech in the front. I am trying to keep it simple. I love how it handles stock because in reality I know I'll only spend about 1 or 2% driving on the track so I'm not going to go out and get a whole new suspension on anything. My goal is just to do a few tweaks so I can put all the power to the ground. What I was thinking is to add a rear sway bar (already have the front) and possibly get camber plates so I can get the most out of the tires. I would've liked to add front and rear anti roll bars but evidentally dinan doesn't recommend it because my front and rear tires are more then 20mm in width. Of course I'm also going change fluids and adjust tire temps when I get there. I don't want to add power because I feel it has enough. I also would like to avoid getting a set of track tires because I don't want to have to worry about storing them and bringing them to and from the track. What do you think?
-Tyler

"The E60 is the fastest, but the one I'd want to drive home would be the E39" -Evo Magazine (March '10)
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post #29 of 34 Old 23rd December 2009, 06:26 PM
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Quote:
Originally Posted by Cajaz13 View Post
Wow thank you. That link really helped. I agree with you on the proactive maintenance. I know I have to upgrade the brakes considering I almost completely roasted them. Figured I go stoptech in the front. I am trying to keep it simple. I love how it handles stock because in reality I know I'll only spend about 1 or 2% driving on the track so I'm not going to go out and get a whole new suspension on anything. My goal is just to do a few tweaks so I can put all the power to the ground. What I was thinking is to add a rear sway bar (already have the front) and possibly get camber plates so I can get the most out of the tires. I would've liked to add front and rear anti roll bars but evidentally dinan doesn't recommend it because my front and rear tires are more then 20mm in width. Of course I'm also going change fluids and adjust tire temps when I get there. I don't want to add power because I feel it has enough. I also would like to avoid getting a set of track tires because I don't want to have to worry about storing them and bringing them to and from the track. What do you think?
-Tyler
A rear bar will help the rear rotate easier, but it will not add more traction to the front per se. In high speed corners, the rotation is helpful, but in low speed corners you won't see much advantage. Camber plates would probably do more than a rear bar. Reducing rear pressure a little will lessen grip slightly in the rear, so you have more of your grip in the front. But remove too much air, and you will feel the tires rolling over. BMW recommends a 4 psi spread on stock tires (rears higher/front), so try a 2 psi spread (rears higher than front), and if that works, go another 2 psi.

I don't think the wider tires really upsets the handling, at least I noticed very little tramlining with the wider fronts. But add camber plates, better brakes and brake cooling and see how you like the changes.

Regards,
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post #30 of 34 Old 20th September 2010, 02:04 PM
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not sure about the suspension set up but the engine and braking stuff you listed covers that aspect... have fun at the track!
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