Can anyone tell me wots the correct tyre pressures for a 2004 subaru jdm sti with 235/40/18 vredestein ultrac sessanta tyres ? thanks

 

I think the 'correct' tyre pressures would be in the Subaru handbook mate but everyone has their preferences.
Road or track use?
I'm at 32/31 with Goodyear F1's but mates I know run with 36

 

I'm running 34F/32R on my Hawk and drives a dream.

 

i run 40 all round drives great

 

how much!

i run 28 all round, even in my mates rally car, the owners manual only states 30-32 PSI

 

There is a plate giving the pressure in bar on one of the door frames (body side not door).
Mine is 2.3 front and 1.9bar rear, yours may be slightly different.

Tony

 

I'd have said 40 all round os way too high. The centre of the tyres will wear out far too fast and you will loose grip compared to lower pressures.

I used to have 35 profile tyres and had to run 38/34 purely as lower pressures meant the tyres rolled under the wheels. Now with 40 profiles on 34/32 is easily enough.