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F85 X5 M and F86 X6 M (2016 - Current)
The BMW X5 M and X6 M are high-performance derivative of the X5 and X6. Introduced at the 2014 LA Auto Show and appearing in dealerships in 2015. Both modeles are powered by BMW's S63tu twin turbo charged V8 making 567 HP and 553 lb-ft of torque, the most power for any BMW xDrive vehicle.

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  #1  
Old 12-12-2018, 10:36 AM
DeepSeaBlueX5 DeepSeaBlueX5 is offline
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Location: Raleigh
 
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Mein Auto: X5M
Winter Tires

I have a 2017 X5M that came with the 21" wheels. For the winter, I bought the BMW winter wheel and tire package. They are 20" rims and have Pirelli tires. I just had the winter wheels/tires put on. The shop that put them on filled the front tires to 36psi and the back tires to 46psi. The plaque on the door says all four should be 36psi. Does anyone know if this is the same for the winter tires and/or know what the winter tire/wheel set up should be? Appreicate the advice.
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Old 12-14-2018, 05:38 AM
cmyx6go cmyx6go is offline
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Mein Auto: 2010 X6 50i
I run mine at 36 all around on the 20" winter set up.
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Old 03-04-2019, 03:05 AM
640ijims 640ijims is offline
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Mein Auto: 18 X5M, retired 640i vert
Whoo, 47 pounds will “pound” you ( pardon the pun) and wear the inner two ribs to nothing in short order, go by door plaque or look up optional tires & inflation in owners manual. My 2018 lists 36# for either 21” or 20”


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Old 03-04-2019, 03:28 AM
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Doug Huffman Doug Huffman is online now
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Mein Auto: CPO2012 X5 35d M57(E70)
From first principles the proper tire pressure varies with tire footprint and normal force on the tire. My owners manual lists slightly higher pressures for travel at speeds at greater than 100 MPH, +3 PSI front and +5 PSI rear.
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Old 03-04-2019, 03:43 AM
640ijims 640ijims is offline
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Doug, you are correct, however it is the few rather than the many that transit the national highway system in bad weather (the original question was a winter tire question) albeit that Raleigh doesn’t see real bad snows, at 100 mph speeds consistently. The second principal is intended use.. eg: a Bonneville salts flats car driven and non driven wheels can differ significantly from say a quarter mile set up machine vs an F1 machine. Jim


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Old 03-04-2019, 03:57 AM
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Doug Huffman Doug Huffman is online now
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Location: Washington Island, Wisconsin, thru Death's Door
 
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Mein Auto: CPO2012 X5 35d M57(E70)
I have on NOKIAN WR G3 year around snow tread intermediate compound and have thought a bit about winter tire pressures. Where I live we have snowy / icy roads for six months of the year and very frequently wet roads in the brief summer. Thank you very much.
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Scepticism and Animal Faith (1923)
Scepticism is the chastity of the intellect, and it is shameful to surrender it too soon or to the first comer: there is nobility in preserving it coolly and proudly through long youth, until at last, in the ripeness of instinct and discretion, it can be safely exchanged for fidelity and happiness.
(The Works of George Santayana p. 65)

Eschew eristical argumentation. I am responsible for what I write, not for your understanding of it.
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