When changing from +60 to +45, you are changing from zero scrub radius to 15 mm scrub radius (more than half an inch). Torque steer is directly related to scrub radius.I've asked him in the comments about the effects of changing to +45 offset on the wheels, let's see if he replies, it seems he will have that car for a while, so hopefully he'll give some insight!
Really?Electric Power Steering blocks most of the forces, so this increase in torque steer is not noticeable.
I think numb steering and torque steer are different things.I am comparing my ITR with my FK2. Much more feedback in the steering wheel of the ITR. FK2 steering feels numb and 'electric'.
Not IMO. The feedback you get from the wheels to the steering wheel is the same. In case of torque steer it is caused by the drive axle. Normal feedback is caused by the amount of grip of the wheels/tires.I think numb steering and torque steer are different things.
As would the lack of rain.I feel zero difference with torque steer on my 18x9.5 +35 wheels installed on my FK8. And I have one track day down.
Maybe my sticky tires help? Bridgestone RE-71R's
There's a difference between an EPS system filtering some intermittent forces (bumps) and counteracting something continuous like torque steer. Let's think about another continuous force, which is the "centering force" that brings the car back to straight driving. Turn into a turn at constant speed (constant speed is so that you don't induce torque steer because that's not what we are focusing on now), then let go of the steering wheel, you'll notice that you'll slowly stop turning and the steering wheel will slowly unwind by itself. This is due to the caster angle of the front wheels. It induces a continuous force that brings you back to straight ahead driving. If an EPS system counteracted continuous forces then you'd just keep turning right (or left) unless you physically pulled the steering wheel straight.An EPS also has an electronic torque sensor on the steering column. When a force is induced by the wheels in the direction of the steering wheel, the electric motor will counteract to this force. This torque sensor will also sense the force in the other direction. From steering wheel to the rack.
Ideally, you would want some diode effect on this electric force. Only induce force when the driver is steering, but do not counteract on forces coming from the tires/wheels.
I don't think he actually says word for word what you quote. Quotations are different from paraphrasing so if you are doing the latter, don't use quotation marks.To all who believe zero scrub radius trumps all... Please watch their video on the subject
"A positive scrub radius tends to be beneficial while braking into a turn. A negative scrub radius tends to better for braking stability in the event of brake failure or split-mu braking. Typically the scrub radius is configured to be as small as possible to minimize the effects under braking, but squirm (from zero scrub radius) is also undesirable."
Goal is to get close to zero. but not necessarily zero.