The link below is to the results of tests done by RoSPA in 2005:
http://www.rospa.com/roadsafety/info/tyre_tread_depth.pdf
Their conclusion is not very exciting, when tyres get below 3mm then wet weather performance drops off. What I thought was interesting is the graph.
Although not said, I would expect you'd get the same effect on cornering and accelerating.
If your rear tyres are 4mm and and your front tyres are 2.5mm, the difference in grip levels front to back will be significant though visually there is little in it. In these winter months you might be wondering why you car is under steering so badly and be looking to coilovers as a solution.
Check the simple things first. Tyre pressures can also change in the winter months, tread depth is something else to watch for when tweaking your car's handling.
As I'm sure you all know, if in doubt, put the best tyres on the front.
http://www.rospa.com/roadsafety/info/tyre_tread_depth.pdf
Their conclusion is not very exciting, when tyres get below 3mm then wet weather performance drops off. What I thought was interesting is the graph.
Although not said, I would expect you'd get the same effect on cornering and accelerating.
If your rear tyres are 4mm and and your front tyres are 2.5mm, the difference in grip levels front to back will be significant though visually there is little in it. In these winter months you might be wondering why you car is under steering so badly and be looking to coilovers as a solution.
Check the simple things first. Tyre pressures can also change in the winter months, tread depth is something else to watch for when tweaking your car's handling.
As I'm sure you all know, if in doubt, put the best tyres on the front.
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