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From my previous cars, especially the Contour SVT, I found using different tire pressures front and back made the car handle better. The SVT Contour The rear at 37 and front at 45psi was greatOn the Focus SE i use 44 front and 39 rear psi
So any ST drivers change the equally balanced 39psi in the ST to a more balanced (relative to weight on wheel) pressure?
I do not know 40 series tires.. So I would tend to lessen the differential and make the front at 42psi and rear 37psi for starters.
in particular how would this affect the tendency for the rear to oversteer?
(my guess is it would lessen the tendency to oversteer as much.. But that is a wild guess)
Anyone?
Added:
I looked up tire pressure and oversteer. And found a set of charts on tireRack which show I am thinking the reverse of what will happen.
link http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=58
Another idea I found is to use chalk across the tire width. then drive a short distance and see if the chalk is uniformly worn. Center chalk strongest, too soft, center gone first too high air pressure..I would think a really flat concrets surface would be best for this test.
Other folks discuss lowering and all that.. this is what i like to work on...
So any ST drivers change the equally balanced 39psi in the ST to a more balanced (relative to weight on wheel) pressure?
I do not know 40 series tires.. So I would tend to lessen the differential and make the front at 42psi and rear 37psi for starters.
in particular how would this affect the tendency for the rear to oversteer?
(my guess is it would lessen the tendency to oversteer as much.. But that is a wild guess)
Anyone?
Added:
I looked up tire pressure and oversteer. And found a set of charts on tireRack which show I am thinking the reverse of what will happen.
link http://www.tirerack.com/tires/tiretech/techpage.jsp?techid=58
Another idea I found is to use chalk across the tire width. then drive a short distance and see if the chalk is uniformly worn. Center chalk strongest, too soft, center gone first too high air pressure..I would think a really flat concrets surface would be best for this test.
Other folks discuss lowering and all that.. this is what i like to work on...