<blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:<hr /><font size="1" face="Verdana, Helvetica, sans-serif">Originally posted by T07:
<strong>Its very dangerous to have more tread on the front than the back when driving in the wet (sounds odd but its true - ask any tyre fitter who knows his stuff) so be careful swapping front to back on a FWD</strong><hr /></blockquote><font size="1" face="Verdana, Helvetica, sans-serif">I can see some logic on a rear wheel drive car .... but not really for a FWD car.
On the occasions where I had a rear tyre go down on a FWD car I actually did not notice it was down until I drove around a corner and the rear felt a little strange.
My resoning is that the fronts on a FWD car are pulling the car along not pushing from the rear and would exhibit less likelyhood of rain induced oversteer in a straight line than a RWD car.
Obviously there is potential for more overstear going around a corner but that is more easily controlled in a FWD than a RWD anyway.
Below is the current explanation for your comment.
"Many dealers and customers alike are of the opinion that, when only two tyres are replaced on a car, they should be fitted to the front. This was undoubtedly the case a number of years ago when it was felt that the retention of vehicle control was more critical with front wheel deflations and, therefore, that the new, and thus less vulnerable tyres should be fitted to the front.
However, the current recommendation on the part of the tyre Industry is, as a general rule, new tyres to the rear. This applies to both front and rear wheel drive cars.
Primarily, the justification is increased safety, particularly in the wet, where it has been demonstrated that, with the partly worn tyres fitted to the rear, their diminished water dispersal capability leads to a greater tendency towards oversteer and thus loss of control. Similarly, straight line braking, in the wet can be adversely affected.
It is also arguable that used tyres are more prone to punctures and since it has now been established that rear deflations are more likely to cause loss of control, this is another reason for fitting new tyres to the rear.
As a secondary benefit for the owners of low mileage front wheel drive cars, the switching of the partly worn rear tyres to the front, enabling the new tyres to be fitted to the rear, creates a cycle which helps prevent their deterioration due to ageing/prolonged exposure. The rear tyres wear relatively slowly and leaving them in their original positions for a prolonged period can result in the need to replace them before they are significantly worn.