Toll free route to Cannes? large outfit

Hazel

Afternoon everyone!

I have been contacted by a member who has a large motorhome (over 3m high) and a car on an A-Frame, this combination means he should be charge category 4 on the motorways (very expensive!)

I wondered if anyone could suggest a toll free route (or a route with limited tolls) to the South of France suitable for a 7.6m long motorhome towing a car?

I am not sure if this has been asked before, I did try a quick search so sorry if the information has already been provided on another thread.

Many thanks