Going to track day, the runflats. tire press?

amigo · 02-05-2009, 10:33 PM

I'm going to Thunderhill Park next week for a track day. Any recommendations on tire pressures. I'm going to use the runflats. no money left,for tires, as the car is new. 135i Msport package.
Should I raise the front press. and not the back to try and get rid of the oversteer. thx.

AtomiK · 02-05-2009, 10:44 PM

Umm, kind of off topic, but since you have a 135i with the M-Sport package, can you take pictures of it? I just want to see if there are any noticeable differences from the non M-Sport cars aside from the stuff we heard about in the press release.

Raflekt · 02-06-2009, 12:07 AM

I have rfts and on the track day i used it like this:

38 front

41 rear

Regards

BerkTechnology · 02-08-2009, 02:20 AM

Keep them kind of high, high 30's to low low 40's. Not good to lower the tire pressure on the RFT's. The sidewalls are too stiff.

xbook · 02-08-2009, 09:44 AM

Is it me, or were some posts in this thread removed?

RedTRex · 02-08-2009, 06:19 PM

40 Front
36 Rear

If it is really hot 90F or better - wet them after run 2, 4, 5, 6.

If it cold drop front by 2 or 3 and rear by 4 psi

looking · 02-11-2009, 05:02 PM

Watch for "chunking" I know it's been talked about before, the RFT chunk when pushed.

amigo · 02-12-2009, 01:08 AM

it's COLD. I should be leaving in 4 hours but just cancelled as the Siskiyou pass form Oregon into California is supposed to snow on/off all weekend. I don't want to risk my Baby in the freaking snow. I don't think the rft's will work to well.
Redtrex that is exactly where I ended up two weeks ago doing an autocross.

02-05-2009, 10:33 PM	#1
amigo Enlisted Member 4 Rep 35 Posts Drives: 135i AW,Coral red,Msport,09 Join Date: Nov 2008 Location: Vancouver,B.C. iTrader: (0)	Going to track day, the runflats. tire press? I'm going to Thunderhill Park next week for a track day. Any recommendations on tire pressures. I'm going to use the runflats. no money left,for tires, as the car is new. 135i Msport package. Should I raise the front press. and not the back to try and get rid of the oversteer. thx.
	Appreciate 0 Tweet Quote

02-05-2009, 10:44 PM	#2
AtomiK Second Lieutenant 32 Rep 279 Posts Drives: Around Join Date: Oct 2008 Location: USA iTrader: (1)	Umm, kind of off topic, but since you have a 135i with the M-Sport package, can you take pictures of it? I just want to see if there are any noticeable differences from the non M-Sport cars aside from the stuff we heard about in the press release.
	Appreciate 0 Quote

02-06-2009, 12:07 AM	#3
Raflekt First Lieutenant 20 Rep 354 Posts Drives: 2009 AW 135i fully loaded Join Date: Jan 2009 Location: Mexico iTrader: (0)	I have rfts and on the track day i used it like this: 38 front 41 rear Regards __________________ 2009 AW 135i CP-E CATLESS DPS, AFE EXHAUST , OIL COOLER KIT,FORGE DVV,,BMW PERFORMANCE SIDE SKIRTS AND BMW P . PEDALS, BMW PERFORMANCE SPOILER , BMW PERFOMANCE KIDNEY GRILLS, CODE 3 IC, DIREZZA Z1 STAR SPEC
	Appreciate 0 Quote

02-08-2009, 02:20 AM	#4
BerkTechnology Lieutenant Colonel 223 Rep 1,565 Posts Drives: Fast Join Date: May 2008 Location: Irvine, CA iTrader: (1)	Keep them kind of high, high 30's to low low 40's. Not good to lower the tire pressure on the RFT's. The sidewalls are too stiff.
	Appreciate 0 Quote

02-08-2009, 09:44 AM	#5
xbook Lieutenant Colonel 131 Rep 1,540 Posts Drives: '14 EBII M235i & '06 R53 GP Join Date: Nov 2008 Location: Northridge, CA iTrader: (0) Garage List 2006 MINI Cooper S GP [0.00] 2014 BMW M235i [0.00] 2008 E82 [0.00]	Is it me, or were some posts in this thread removed? __________________
	Appreciate 0 Quote

02-08-2009, 06:19 PM	#6
RedTRex Digital Cerebrum 18 Rep 408 Posts Drives: 05 330ci ZHP Join Date: Feb 2008 Location: Jacksonville, FL iTrader: (4) Garage List 2005 BMW 330ci [0.00]	40 Front 36 Rear If it is really hot 90F or better - wet them after run 2, 4, 5, 6. If it cold drop front by 2 or 3 and rear by 4 psi
	Appreciate 0 Quote

02-11-2009, 05:02 PM	#7
looking Captain 35 Rep 602 Posts Drives: 135 Join Date: Aug 2008 Location: GTA iTrader: (0)	Watch for "chunking" I know it's been talked about before, the RFT chunk when pushed.
	Appreciate 0 Quote

02-12-2009, 01:08 AM	#8
amigo Enlisted Member 4 Rep 35 Posts Drives: 135i AW,Coral red,Msport,09 Join Date: Nov 2008 Location: Vancouver,B.C. iTrader: (0)	it's COLD. I should be leaving in 4 hours but just cancelled as the Siskiyou pass form Oregon into California is supposed to snow on/off all weekend. I don't want to risk my Baby in the freaking snow. I don't think the rft's will work to well. Redtrex that is exactly where I ended up two weeks ago doing an autocross.
	Appreciate 0 Quote