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Tire Pressure

11498 Views 9 Replies 6 Participants Last post by  MEnthusiast
Yes, I know its been covered by others- yet there seems to be no definitive answer to the question: what are the recommended pressures? (Im asking for the USA, but Im sure others are curious also)

I have dunlap 8080s and the sidewall says max pressure is 51psi. The sticker on the drivers side of the door has icons that apply to the dunlap tires but then says max=44/48. The sticker then lists another set of numbers but these have French next to them for a description. It seems to me that these are for snow tires.

I checked the M5 manual and it states recommended pressures should be 35/38. I called my dealer and was told to use 32/39. I then called BMW USA and they said to use whatever the door sticker says. I decided to call the dealer one last time and they then said to use the 44/48 number.

I tried this and it seems too high to me. The car is a little too "bouncy". I decided to compromise between the manual and the door sticker and set the pressures to 40/43.5 psi.

Does anyone know what the actual recommended pressures are?

thanks in advance.

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i too am confused. same tires as yourself

i just dealt with this this morning in fact and hit the same exact information you did (the door panel -vs- the manual).

i ended up going with the door panel 44/48. it is definitely a high number. i don't know about "bouncy" but it's definitely different. my tires were something like 36/40. i actually turned off DSC a few times today because i thought it was engaging too easily.

i'm not averse to the 44/48 inflation (yet), but it's definitely different.

it'd be great to get some definitive info on this.

fwiw, i got the impression that the 44/48 was for a fully-loaded 5-passengers-plus-luggage scenario. however, i didn't see meaningful info otherwise, so stuck with it.

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Did they say why or under what conditions?

I just pumped mine up, so no data on uneven wear. Can anybody here comment on uneven wear at the mfg. recommended pressures?

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