[Piwoslaw]

Originally Posted by akwroclaw

I engineered it due to the long gear changes [my gearbox is manual].
With bigger [brand numbers'] tyres I couldn't change to the next gear earlier:

3rd could propel the car only from 50km/h upward
4th could propel the car only from 70 km/h upward

so I had to ride the vechicle with 2nd gear in curved streets
and ride 3rd in long lines..
[...]
And now:

3rd can propel the car from 40km/h
4th can propel the car from 60 km/h

That's a nice trick. It's worth doing if you don't need higher speeds. BTW, is your transmission a 4- or 5-speed? Have you found any information on other forums about swapping the gearbox for one with more gears and/or better gear ratios?

Originally Posted by akwroclaw

>>I thought MB 190 sedan can also easily have such roof extender.
>The results on a sedan are less than on a car with a rear hatch like Piwoslaws 307SW.

i see..
I thought how to make the extender, how to glue it - there is an opening along the window rubber - it could help.

Have you read Groar's Megane modding thread? He's tried both extending the roof of his sedan and extending the trunk (boot) hatch, and it seems that the best answer is a combination of both.