What pressures are you running?

[anonymous-user]

My car pinged a low tyre pressure warning at me today. The display showed 31f 33r. One of the fronts had dropped to 30 which was flashing. My assumption is that is below the threshold for the system.

Checked on the door and it says 36f 38r. Bit surprised at this because I have not noticed any incorrect tyre wear or performance issues with them running lower. I have put them up to the recommended psi. Running the pirellis.

What do you all do with tyre pressures?

[Graze01]

V8V running 38 all round on MPS 255/35 & 295/30

So far done 21,000 km (mostly highway miles) and still a fair few 0,000km left

Graze

[R129 300SL]

36F 38R is too high I think. Feels very harsh with these pressures especially with AM approved Bridgestones.

I run 34F 36R on Michelin Pilot super sports.

For comparison a similar weight Ferrari 599 runs 32 all round on pilot super sports.

[rovcallum]

My copy of the Workshop Manual states Front 33, Rear 36.

[GenialZ]

It does vary cold to hot. First thing in the morning it can be several psi lower than after a run. Middle of the day the warning may not come up at all. I haven't looked but I would expect the recommended pressures to be at a certain temperature.
With alloy wheels, their porosity leads to a steady pressure loss over months, so I take the warning as a reminder to pump up all round. I guess I top mine up every 3 or 4 months. I top my V8V to 33/36 ish. Of course, my two pressure gauges never read the same, mechanical and electronic, so we can't be too precise.
The TPMS shows the front right goes down first, every time.

[rovcallum]

Reference tyre pressures are when cold.

[RSbandit]

36 cold for me in the V12S

[R129 300SL]

The 36F 38R is for a DB9. Manufacturer spec

[bogie]

V8 on the wider rims, run 33 fr and 36rear when cold ....in summer equates to something like 38/42 when warm