[Tuned335i]

Just wondering if anyone reduces their rear tire psi for drag racing. I was told by one person that it wouldn't do any good because the tires are so low profile already that the sidewalls are ultra stiff and won't benefit from a lower pressure.

I'm running the stock pressure in P265-30R19 Michelin PS2 non-RFTs and having serious trouble driving it off the line in 1st gear. Best run is 13.22@108.12 with DSC off and no traction in 1st gear with a poor 2.194 60' time.

[roy@gambitmotorsport]

Originally Posted by Tuned335i

Just wondering if anyone reduces their rear tire psi for drag racing. I was told by one person that it wouldn't do any good because the tires are so low profile already that the sidewalls are ultra stiff and won't benefit from a lower pressure.

I'm running the stock pressure in P265-30R19 Michelin PS2 non-RFTs and having serious trouble driving it off the line in 1st gear. Best run is 13.22@108.12 with DSC off and no traction in 1st gear with a poor 2.194 60' time.

Free Terry, LOL! Still frames of funny cars on strips show visible stretch of the tires between rim and road. Perhaps, this is why the drag-king (Terry) runs 17-inchers.

Additionally, how you warm them up and the fact that 19" rims push the weight to extremities, isn't going to help things regarding acceleration.


Roy