Hi guys does any one know what the tyre pressure should be for the following size tyres?
215/45/17

Thanks guys.

 

On a new age STi they should be 2.3bar front, 1.9bar rear (34/29)

Tony

 

Found 34 front and 30 rear works best on my RB5.

Hope this helps, Phill

 

Quick question what pressures should I use on a 1994 wrx Classic on 18 inch wheels 215 x 35 zr18
Thanks in advance

 

I spend most of my time on bumpy back roads - anything higher that 31 all round tends to loosen my teeth...

just curious - any reason (apart from engine weight) that the front / rear pressures are different? And what effects will having all 4 the same have opposed to this?

 

Yes. Cornering hard places more force on the front for obvious reasons, as does hard braking. Higher pressures will help stiffen the sidewalls and maintain the size of the contact patch with the road.
Excess pressure will cause the tyre to bulge in the mid tread, causing premature wear in the middle. Low pressure with wear the edges more noticably.....

Steve