Custom design rules for length tuning of differential pair

[Bhoomika_Vaghela]

I am using Kicad 6.0.4. I am using 4 layer board which have 90 ohm and 100 ohm differential pair.

These two 100 ohm differential pairs are routed in inner layer and bottom layer but the tune spacing for these two are not as per the requirement [required tune space is (3 * trace width)].

Is there any option to set this tune spacing with custom rules?

[mf_ibfeew]

first: the picture/diagram is not correct. The minimal spacing “s” is measured between the center of the tracks. (look into the gitlab-issue Diff. Pairs: Length tuning dialog: misleading drawing (#10073) · Issues · KiCad / KiCad Source Code / kicad · GitLab to find a corrected graphic).

edit: just for convenience: a copy of the latest proposed graphic

Is there any option to set this tune spacing with custom rules?

As far as I know: no

[Bhoomika_Vaghela]

okay… thank you for the reply.