Originally Posted by
GommeInc
But to stay in a low gear is also endangering, because you use higher revs to control the car which means more chance of wheel spin. It's best to be in 5th gear when doing 30 mph, which you can achieve anyway because at 3rd gear a 1.4/1.6 litre car can reach 2,500 rpm which is a lot of revs which can make it easier to change to 5th gear and reduce this to 1,500 rpm, which is a lot safer as you put less strain on the engine (less chance of wheel spin when the car loses traction). If driving in thick snow, it's safer to do 10-20mph, so you want to do this in 2nd and 3rd gear (2nd = 10mph, 3rd = 20mph). A low gear is only useful when slowing down, because braking removes all tractions and creates a drift.
They teach all this in Pass Plus and if you've driven in wintery conditions. It's dangerous to be in a high gear when driving steady :P