What tire pressures do you run? Stock recommendation seems too low

fjork_duf · 09-30-2008, 07:58 PM

I have a M3 sedan with stock 18s, and in the door it recommends 35 PSI all the way around the car. That seems to be WAY too juicy for carving up back roads. I even felt like the tires were rolling over a bit on the really right stuff. For 100mph runs the pressure is recommended to be 39/44. I figured I'd do a little lower than that for daily driving.

So last night I put 38 psi front and 42 psi rear. The car seems to handle so much better. Anyone find a better sweet spot for the stock 18" tires?

Radiation Joe · 09-30-2008, 09:22 PM

35 COLD sounds pretty close to correct. That would probably be just under 40 warm and over 40 if you are hitting it. Now that you have the tires where you like them, check the pressures in the morning before you drive off and let us know what they are at.

I'm running the the new M3 wheels and tires on my set-up e46 M3 with pressures set at 39 psi warm.

fjork_duf · 10-01-2008, 12:25 PM

Even with 35psi cold the tires seemed way too juicy. Especially on some of the tighter roads around here. It's definitely more comfortable in daily use, but seems like it compromises handling a bit.

PunjabiM3 · 10-01-2008, 01:34 PM

I would do 37 front and 34-35 rear.

FunRevn · 10-24-2008, 01:10 PM

PunjabiM3

Does the 37F 35R work well? it should make the back a bit loose. Any comments.

Thanks

PunjabiM3 · 10-24-2008, 03:54 PM

Quote:

Originally Posted by FunRevn

PunjabiM3

Does the 37F 35R work well? it should make the back a bit loose. Any comments.

Thanks

A higher pressure will make it loose if we are using the term in the same way. Less pressure means the tires will give you better traction but will be less responsive in terms of handling. If you were to jack the rear pressure up to lets say 40psi, then the rear end would likely come out faster due to there being less ultimate grip.

09-30-2008, 07:58 PM	#1
fjork_duf Enlisted Member Drives: Hopefully V8 M3 Soon Join Date: Dec 2007 Location: California Posts: 41 iTrader: (0)	What tire pressures do you run? Stock recommendation seems too low I have a M3 sedan with stock 18s, and in the door it recommends 35 PSI all the way around the car. That seems to be WAY too juicy for carving up back roads. I even felt like the tires were rolling over a bit on the really right stuff. For 100mph runs the pressure is recommended to be 39/44. I figured I'd do a little lower than that for daily driving. So last night I put 38 psi front and 42 psi rear. The car seems to handle so much better. Anyone find a better sweet spot for the stock 18" tires?
	Tweet

09-30-2008, 09:22 PM	#2
Radiation Joe Veni Vidi Vici Drives: '11 JB/BBe-6sp-e90 Join Date: Jul 2008 Location: Macungie PA Posts: 2,688 iTrader: (0) Garage List 2003 RS6 - Sold [0.00] 2011 e90 M3 [4.25] 2009 e90 M3 - Gone [0.00] 2003 M3 SOLD [0.00] old 2002 [5.00]	35 COLD sounds pretty close to correct. That would probably be just under 40 warm and over 40 if you are hitting it. Now that you have the tires where you like them, check the pressures in the morning before you drive off and let us know what they are at. I'm running the the new M3 wheels and tires on my set-up e46 M3 with pressures set at 39 psi warm. __________________ Dinan compliment of stuff plus PF rotors and RG63s. Enough for now.

10-01-2008, 01:34 PM	#4
PunjabiM3 Lieutenant Colonel Drives: VO 1M Join Date: Mar 2008 Location: Tucson, AZ Posts: 1,673 iTrader: (1)	I would do 37 front and 34-35 rear. __________________ New ride ETA 2 weeks 2012 Audi A6 Prestige, Moonlight Blue 2009 Lexus ES350, Sparkling Graphite (wife's) Previous: 11 e82 1M, 07 997TT, 08 e92 M3, 06 997 C2S, 05 e46 M3 coupe, 03.5 e46 M3 cabrio

Thread Tools	Search this Thread
Show Printable Version Email this Page	Search this Thread: Advanced Search

10-01-2008, 12:25 PM	#3
fjork_duf Enlisted Member Drives: Hopefully V8 M3 Soon Join Date: Dec 2007 Location: California Posts: 41 iTrader: (0)	Even with 35psi cold the tires seemed way too juicy. Especially on some of the tighter roads around here. It's definitely more comfortable in daily use, but seems like it compromises handling a bit.

10-24-2008, 01:10 PM	#5
FunRevn First Lieutenant Drives: 2011 MSport PE Join Date: Nov 2006 Location: Western Region Posts: 354 iTrader: (0)	PunjabiM3 Does the 37F 35R work well? it should make the back a bit loose. Any comments. Thanks