Posted by MarkB_MI on December 11, 2017 at 17:41:01 from (174.230.7.228):
In Reply to: Re: Tire Safety posted by showcrop on December 11, 2017 at 13:02:58:
>Mark B your posts are just so far out that I have to respond. If you were to take any instruction in competitive driving, you would be taught early on about the need to POWER through turns
The first thing they teach you in motorcycle class is that your tires have only X amount of traction. You can budget that traction between turning, accelerating and stopping. You can stop fast and you can turn fast, but if you try to do both at the same time the bike goes down. Likewise, when you accelerate during a turn, you use up some of that traction available for acceleration. Most of the time you it's not a big problem to accelerate out of a turn, because the tires have enough traction in reserve to handle the acceleration force. But hit the throttle coming out of a turn on a slick surface and the bike goes down.
This is all basic physics. The tires on a four-wheeled vehicle have to obey the same laws of physics as does a motorcycle. The front tires on a FWD vehicle have to do all the acceleration, almost all turning, and most of the stopping. Yes, in a turn the rear tires do have to generate some centripetal force, but since they don't do any acceleration and little braking, they have much more reserve traction than the fronts. Which is why the front tires on a FWD almost always break traction first. Taking the transmission out of gear and staying off the brakes will give the front tires the same reserve traction as the rears, and the car will go around the corner instead of running off into the ditch.
That said, it seems manufacturers do recommend putting the best tires on the rear. But their major concern is hydroplaning. I mistakenly assumed you were referring to winter driving, where the main problem is snow and ice, not hydroplaning. And at any rate, nobody should be driving on tires front or rear where the tread is too thin to avoid hydroplaning.
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