[paprmkr]

What psi are you running?
Car door jam has settings for the 20” 938M wheels that came with my i5M60
I recently mounted the 943M 21” wheels with
255/35-21 CONTINENTAL ECOCONTACT 6Q
285/30-21 CONTINENTAL ECOCONTACT 6Q
I inflated them 41/43 psi. But wondering what BMW had as suggestion for 21”. I haven’t found online any information
Thanks in advance

[Blue Sky]

Looks like it’s in the owner’s manual

There’s two tables one for 100 mph. The pressure is higher in the higher speed table.

[paprmkr]

Originally Posted by Blue Sky

Looks like t’s in the owner’s manual

Thank you. I didn’t think about manual since mine didn’t come with 21” from plant.
Also when I went to Americas tire to get hazardous insurance for those tires they didn’t have the model on list.
Con EcoContact 6Q made for BMW EV vehicles
So far like the ride , low
Noise also
Also first time that the fronts are more expensive then rear. $475 front $450 rears
Again thanks. Will adjust psi tomorrow I currently at 41/43. Close enough but like to be at recommended

[nf0rc3r]

Go into Tyre pressures in Idrive. See the Tyre size
and follow the recommended pressure there

[AiredaleDad]

My Idrive keeps telling me 36psi for my 20" all seasons. The chart says 45 and 46 psi.

[dsgs]

The numbers in my owner’s manual don’t look much like the numbers from Blue Sky. There are two charts, one for “under 160 km/h” and one for “over 160 km/h”. The “under” chart says 41 psi both front and rear for 21” wheels.

[paprmkr]

Originally Posted by AiredaleDad

My Idrive keeps telling me 36psi for my 20" all seasons. The chart says 45 and 46 psi.

Yes for my 20” idrive was all over but around 44fr46rear
Reason I asked. When I used 41/43 thought may be low

[Blue Sky]

Originally Posted by dsgs

The numbers in my owner’s manual don’t look much like the numbers from Blue Sky. There are two charts, one for “under 160 km/h” and one for “over 160 km/h”. The “under” chart says 41 psi both front and rear for 21” wheels.

Good catch. I posted the other pressure table picture in my post above.

I dunno. 41 seems a little high. More like pressure for maximum load. What does the doorjam sticker say for normal load?

[dsgs]

Originally Posted by Blue Sky

What does the doorjam sticker say for normal load?

The door sticker says 41/42, but my car came with 20" wheels (not 21"). It does not have anything for any other configuration. Instead it says "see owners manual for additional information". The numbers that come up in iDrive match the chart in the manual (41/42 for 20" wheels, and 38/38 for 19").

[Blue Sky]

OK, given that spectrum it sounds right