Tyre pressure question
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I've searched the forums but am not coming up with a definite answer to this:
I've just replaced my PS2's on the rear of my car (I have M172 rims)
I used to have 275/30 tyres, but have now changed to 285/30.
Neither the 5 Series nor the M5 owners manual list this tyre size and the recommended pressure.
Does anyone know for certain what the normal and full load pressures should be?
Thanks in advance
I've just replaced my PS2's on the rear of my car (I have M172 rims)
I used to have 275/30 tyres, but have now changed to 285/30.
Neither the 5 Series nor the M5 owners manual list this tyre size and the recommended pressure.
Does anyone know for certain what the normal and full load pressures should be?
Thanks in advance
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Originally Posted by BMW#6' post='469961' date='Sep 16 2007, 09:17 PM
Aaannnnyyy body know???
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275/30/R19 (rear) = 3.2 bar - 46 psi
For spirited driving, 120 mph 200 km/h + speed.
If you are not driving that fast, then 2.8 bar - 40 psi Front, 3.0 bar - 44 psi Rear, is good enough up to 120mph - 200km/h speed.
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Originally Posted by nicke60gre' post='470912' date='Sep 18 2007, 10:14 PM
245/35/R19 (front) = 3.0 bar - 43 psi
275/30/R19 (rear) = 3.2 bar - 46 psi
For spirited driving, 120 mph 200 km/h + speed.
If you are not driving that fast, then 2.8 bar - 40 psi Front, 3.0 bar - 44 psi Rear, is good enough up to 120mph - 200km/h speed.
275/30/R19 (rear) = 3.2 bar - 46 psi
For spirited driving, 120 mph 200 km/h + speed.
If you are not driving that fast, then 2.8 bar - 40 psi Front, 3.0 bar - 44 psi Rear, is good enough up to 120mph - 200km/h speed.
I have 285/30 rear tyres though.
Any idea?
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Originally Posted by BMW#6' post='470924' date='Sep 18 2007, 11:26 PM
Thanks Nick.
I have 285/30 rear tyres though.
Any idea?
I have 285/30 rear tyres though.
Any idea?
There's a theory that suggest on heavy sedans to inflate the tires -10% than the maximum pressure indicated on the sidewall of the tire.
Maximum pressure indicator is the maximum pressure the tire can safely achieve under it's maximum indicated load.
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My Ride: E90 330i + E60 550i
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Originally Posted by nicke60gre' post='471010' date='Sep 18 2007, 06:01 PM
There is not any differense, you can follow the same path.
There's a theory that suggest on heavy sedans to inflate the tires -10% than the maximum pressure indicated on the sidewall of the tire.
Maximum pressure indicator is the maximum pressure the tire can safely achieve under it's maximum indicated load.
There's a theory that suggest on heavy sedans to inflate the tires -10% than the maximum pressure indicated on the sidewall of the tire.
Maximum pressure indicator is the maximum pressure the tire can safely achieve under it's maximum indicated load.
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Originally Posted by s4iscool' post='471528' date='Sep 19 2007, 08:42 PM
those are some pretty high pressures. I usually stick with 33 front and 36 rear
Now I have to pay some ??? for new tires and wheels and I will follow the tire manufacturer's recommendations from now on.
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