Track day for the Z4

screwynewy · 03-22-2023, 10:00 PM

Hello, I'm new to this forum but not new to BMW's. I used to club race with BMW CCA but it's been about 15 years since I've been on track. I bought my 2013 Z4 35is DCT last November and have done all the bolt-on mods and running MHD stage 2 and xHP transmission tune stage 2.

I have signed up for a track day in April at VIR and was wondering if there is anyone with advice about things to watch out for or be careful about in the Z4. Obviously, I'm not W2W racing it but I don't want to tear it up while trying to have fun. I'll swap out the brake pads to Hawk DTC 70 and flush the brake fluid and cooling system. Any other recommendations or advice?

Tangent · 03-24-2023, 03:56 PM

Based on my days at Auto Club Speedway in my Z4 35i, watch those oil temps. I just ran an MHD stage 1 tune and it was borderline enough even on cooler days that my next mod was going to be upgrading the oil cooling system. ACS had long stretches of full throttle but at the same time it had plenty of very high speed sections that brought loads of cooling air through the radiators.

I'd recommend bringing your adapter along so you can go from stage 2 to stage 1 to reduce cooling system load if necessary.

MRCW · 03-25-2023, 06:36 AM

What bolt on mods have you done? That can make a big difference on whether you will have a nice long fun day or challenges with power, cooling, brakes, tire wear etc.

Are you driving or trailering your car?

I used to have a set up for suspension geometry, brake pads, tire pressures, new plugs, etc.

I do lower impact auto crosses these days

Great fun!

03-22-2023, 10:00 PM	#1
screwynewy New Member 2 Rep 8 Posts Drives: E89 Z4 35is Join Date: Oct 2022 Location: Raleigh, NC iTrader: (0)	Track day for the Z4 Hello, I'm new to this forum but not new to BMW's. I used to club race with BMW CCA but it's been about 15 years since I've been on track. I bought my 2013 Z4 35is DCT last November and have done all the bolt-on mods and running MHD stage 2 and xHP transmission tune stage 2. I have signed up for a track day in April at VIR and was wondering if there is anyone with advice about things to watch out for or be careful about in the Z4. Obviously, I'm not W2W racing it but I don't want to tear it up while trying to have fun. I'll swap out the brake pads to Hawk DTC 70 and flush the brake fluid and cooling system. Any other recommendations or advice?
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03-24-2023, 03:56 PM	#2
Tangent Lieutenant 303 Rep 587 Posts Drives: G01, F82, E89, F25 Join Date: Jun 2015 Location: California iTrader: (2)	Based on my days at Auto Club Speedway in my Z4 35i, watch those oil temps. I just ran an MHD stage 1 tune and it was borderline enough even on cooler days that my next mod was going to be upgrading the oil cooling system. ACS had long stretches of full throttle but at the same time it had plenty of very high speed sections that brought loads of cooling air through the radiators. I'd recommend bringing your adapter along so you can go from stage 2 to stage 1 to reduce cooling system load if necessary.
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03-25-2023, 06:36 AM	#3
MRCW Private First Class 36 Rep 121 Posts Drives: Z4 35i X1 35i Join Date: Oct 2022 Location: Florida iTrader: (0)	What bolt on mods have you done? That can make a big difference on whether you will have a nice long fun day or challenges with power, cooling, brakes, tire wear etc. Are you driving or trailering your car? I used to have a set up for suspension geometry, brake pads, tire pressures, new plugs, etc. I do lower impact auto crosses these days Great fun!
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