It's a question we are always asked when out and about on a Sinclair C5.
Trawling through the internet I came across this quote from Chris Crosskey;
I got 60 out of mine down a very very steep hill in Scotland, and that's
what I told the guy.... I seriously don't recommend it, over 40 and the
steering gets as stiff as a board, you'd better be on Schwalbe's too, I
can't imagine a set of 20-year old Vee-rubbers taking it...... or Raleigh
redstripes...
chrisc60mph on a Sinclair C5
- top respect !!
Andy will have to find a bigger hill in Norfolk for us to beat that....
A good recommendation for Schwalbe tyres though !