first of all, we need to consider what braking we mean.
if braking on the street on cold tires, on rain or sandy or bumpy asphalt often with leaves on the road then the front always locks on the serial abs and serial wheel size and increasing the width will not help much here. smaller wheel size is located lower front and a little more kg on the front axle which has some effect but small. An additional advantage is that with a smaller wheel diameter at the front there are more impulses to the abs from the front wheels, so the abs will be less the wheel will stop. which is good with a serial two-channel abs.
another situation is the track where the tires are hot and the asphalt is hot.
it is harder to block the front, especially if it has grippy 205 or 215 wide Semislicki.
but still I feel faster locking the front with 215 / 40r17 v70a in front without abs.
the solution was to use weaker pads at the front and strong ones at the back. and it solved the problem.
additionally in the cold street when the brake is initialized there is no sudden blocking of the front and more force immediately hits the rear brakes because the pads in the back are harder. I did not notice any negative behavior with this configuration. maybe on ice on the bend it would affect but winter i'm not driving.
4 channel abs from 111r is very good and fast. and stronger pads at the back (i have ds1.11) and wider tires at the front (i have 215 / 40r17) do not bother lotus abs at all and in my opinion such a setup works well on the street and on the track. and no other calipers or larger discs are needed because even at 200km / h abs blocks the brakes. I also don't feel any overheating even after 30 minutes of continuous burning on the track.
I was also riding in parallel with a friend and braked from 160 to zero.
he was on 6-piston porsche calipers with 322mm discs with brake power corrector and without abs, and i on serial 288mm discs and calipers and lotus 111r abs . I stopped the car car length earlier.
Edited by piwo, 04 September 2019 - 04:31 AM.