Audi A3 1.9TDI 74kW ATD Vacuum Hoses Replacement - 3.5mm vs 3.2mm & 5mm vs 4mm, Gates Hoses

Hello,
I am going to replace all the vacuum hoses because they pressure and are already their years.
In A3 1.9TDI 74kw ATD according to ETKA comes out 3.5mmx2 i.e. 253.5 cm and 5mmx3 i.e. 111 cm.
If I buy 3.2mm and 4mm will it sit well?

I have read that Gates has quite good hoses and the fuel hoses can also be used in underpressure / reinforcement hose / internal linen braid.
The lagging is not recommended. ] Link [/url]

Added after 22 [minutes]:

Possibly 3.2mm and 5mm so that 4mm would not be a problem ..

It's hard to get 4mm reinforced between layers, but this 3.2 gates for overflows is actually very good also for underpressure. How much do you need for one car, I won't tell you because I buy bobbins.

I took 5mm from Gates.
I think it's going to be okay.