Checked my tire pressures last night i was down 2psi on the passenger side but i dont think that would cause the caravanning i felt. Actually at a ton plus i spose that could have some effect. Also i hadnt considered the whole brake temperature issue.
I dont know why but u never seem to think of these things when road driving. I handt used my brakes at all that evening, it was nice quiet cruising with most of the deceleration being caused by the gears.
Also i thought that 172s didnt come with e, i though that was a myth.
Back to the original Q though, how come clios start to caravan when things like Pugs and Fucoss dont?