Quote:
Originally Posted by CharlesJones
Interesting stuff, but basically what this seems to boil down to is the importance of using grippier tyres in the rear than in the front.
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Nope. You can screw it up by having tires with more grip on either end of the car, although having more grip on the front is usually worse than the other scenario.
The car manufacturers work hard to ensure that the choices they make will provide a generally safe and predictable car under all of the conditions it will likely be used in, or that it will be safe in a worst case scenario. As an example, in an old 911, hard braking in the wet, downhill, can be pretty tricky.
This may mean different tire sizes, wheel sizes and presures front and rear. The pressures may change with vehicle load and the sizes may change, if you fit winter tires. The bottom line is someone has done a fair bit of test driving to determine this. There isn't enough information available to the general public on tire performance to make more than an educated guess before buying a mixed set and most people don't have the skill, facilities and inclination to do any testing after they buy a set of tires. It's better to be safe than sorry.
Of course, it is a free country...
JR