Quote:
Originally Posted by DanielGr
Can we say we're both right and wrong? There is no hard and fast answer to 'do x to get x' when it comes to tyre pressures as it will depend heavily on the car, type of tyre, where your pressures currently are etc...
Using your pyramid, if you're on the underinflated side of it on your fronts (i.e. under the peak grip), increasing them increases their grip relative to the rear i.e. cancelling out understeer/possibly to the point of inducing oversteer.
Other way still stands. Assume your fronts are at peak grip, overinflating your rears to reduce grip and suddenly you have a oversteering car.
As for those sites...
https://www.facebook.com/notes/ultra...0134442380550/
http://www.trackdayguru.com/tyre-management.html |
Yes, that's what I'm saying.... there is not an absolute right option... but in most cases increasing tire pressure in the front will lead to less understeer in the case you are below the optimal pressure...
Also increasing tire pressure, will increase your spring rate which will lead to understeer... so there are more factors than just grip but usually spring rate doesn't make such difference as the grip from the tire
even the 2nd site you posted shows...
Symptom Pressure Adjustment
Understeer Increase Front or reduce Rear 2 psi *
Oversteer Increase Rear or reduce Front 2 psi *
as for the facebook guy... I think he is just wrong
