The scrub radius is increased because offset is added when you reduce the tyre width. So the wheels roll quite a bit as you turn them and therefore braking makes the wheels harder to turn. Watch in F mode.
I see, I feel this also in the default setup of the fxr, as well as hard track XRT there is a noticeable difference between the feel of the wheel on and off the brakes at a standstill I did in fact notice some things happening in the f button screen, but those things don't mean much to me, I tune based of the "feel" I get from the car /shrug
Well originally I assumed this to be the case, instead, I changed the brake bias, and still with the brakes at the rear you feel it, just happy for an explanation .
But for me, that doesn't seem to make any difference and still feels the same with the brake at front.
edit: also for example the XFG, I could not feel it in this car, what is the difference?
Well, as you turn the steering while stationary, the road wheels will roll around their axes. If you apply braking then that will stop them. The only way to continue to turn the steering wheel is to "drag" the contact patch across the road surface. The wider the tyres the harder this is. I guess the XRG has some of the narrowest tyres plus the car is light. Also FFB controllers cannot generate that much force.
Well for me I assumed I would feel a noticeable difference between the wheel when the brakes are set to the front, compared to being set at the rear but this is not the case, for me whether the brakes are at the rear or the front I can feel no difference between them..
With the XFG I assumed this effect to be worsened by the front engine weight pressing on the front feels but in fact, there is no effect at all. //or it is that small you cannot feel it like you can on the other cars even on high force