I found a 185 50 14 drives better conti or yoko, less tram lining.
those are pretty wide tyres for a car as light as a g40. it will cause tram lining.
Not a fan of 195s on a Polo either, 185/50 on a 14" or 175/55 if you don't mind a bigger overall tyre.
Lower offset rims will also increase torque steer and tramlining. I remember driving Robin's car whilst mapping it on wide low offset ATS classics, and it was awful to drive - was much better on stock BBS RAs.
Totally agree about width of tyres, I remember running 165/60/14 et38 on and the G felt great, light & responsive, like it was 'dancing'. Ran some wider tyres on lower offset wheels and didn't like it, felt slow and heavy. The caveat being, you can't put the power down through 165, so can totally understand why 185's see to be a good balance.
I also really agree about having higher offset wheels, in my mind, the closer the wheel sits in, the more the car can roll
over the tyre and push into the road generating grip.
Surely wheels n tyre is the first and most important thing to get right in any motorsport...