[sspade]

I was hoping someone could post a picture of their door jam placard, like the one I took below.

Please only do so if you have an F body... 3 series sedan... with N20 motor... and M Sport package.

[sspade]

Reason I ask is...

My car came with 17 inch wheels as shown on my door placard...

Ive since switched to 18 inch wheels (like what would have come on an M Sport or Sport model)...

And I was wondering what the manufacturers recommended tire pressures were for that size.

[chhappy7]

I posted my sport model one because you also mentioned sport in your second post but I saw in your OP you wanted the M Sport one.

[sspade]

chhappy7

Thanks!

Interesting to see the fronts remain the same at 32psi but rears increase to 35psi. Is that what you are currently running?

Hopefully we can get an M Sport poster and then we have covered all the bases for N20.

[M Smurf]

Originally Posted by sspade

chhappy7

Thanks!

Interesting to see the fronts remain the same at 32psi but rears increase to 35psi. Is that what you are currently running?

Hopefully we can get an M Sport poster and then we have covered all the bases for N20.

Ill get you one later today

[amancuso]

I didn't know you could get an M Sport equipped car with 17" wheels from the factory.

[M Smurf]

Here you go

[sspade]

Originally Posted by amancuso

I didn't know you could get an M Sport equipped car with 17" wheels from the factory.

Who said you could?

[sspade]

As a summary, this is what we have so far:

Base: Square, 225/50/17 (32 F / 32 R)

Sport: Square, 225/45/18 (32 F / 35 R)

M Sport: Square, 225/45/18 (32 F / 35 R)

M Sport: Staggered, 225/45/18 (32 F) / 255/40/18 (32 R)

[andino]

There's the alternative sizes and tire pressures in your manual too. That's how I found a ballpark on where to start with my tire pressures for different fitments.

[sspade]

Seems like the consensus proper temp up front is 32psi. Ill stay there.

For the rears, Ill try going up to 34-35.

Seems like a good idea since Im running a square 235/45/18 set up with aftermarket suspension. Most like the Sport model than anything else.

[sygazelle]

Here's a photo from my 2014 328i with M-sport square setup and N20 engine.

[amancuso]

Originally Posted by sspade

Who said you could?

Thought you did.

[sygazelle]

Originally Posted by sspade

Seems like the consensus proper temp up front is 32psi. Ill stay there.

For the rears, Ill try going up to 34-35.

Seems like a good idea since Im running a square 235/45/18 set up with aftermarket suspension. Most like the Sport model than anything else.

I forgot to mention that I've got DHP (with adaptive suspension). I have no idea if that has any bearing on BMW's recommended tire pressure of 35psi in the rear. All I know is with go flat tires, DHP, and Dinan Shockware, the car rides great!

[vooonoo]

Spade you should take into consideration if they have xDrive or not. xDrive doesn't like different sized wheels. Which would impact the PSI.

Also you have a 2014, you don't have the n26 motor? My 2014 has the N26

[sspade]

Originally Posted by vooonoo

Spade you should take into consideration if they have xDrive or not. xDrive doesn't like different sized wheels. Which would impact the PSI.

Also you have a 2014, you don't have the n26 motor? My 2014 has the N26

Yes, I have N26 too but I doubt that would affect anything vs. N20 when talking about tire pressures.

Interesting point on the xDrive. Wonder if that impacts factory recommendations.

[M Smurf]

Somewhat off topic, in case anyone's curious, 17s will fit the M Sports contrary to what every tire site will lead you to believe.

[RMachuca3d]

Originally Posted by M Smurf

Somewhat off topic, in case anyone's curious, 17s will fit the M Sports contrary to what every tire site will lead you to believe.

Msport package, yes, additional msport brake package, no.