Quote:
Originally Posted by SailinAway
I agree with you that mounting the tires the wrong way is a hazard and I'm getting them remounted this week. I also wonder if it reduces gas mileage, since the car is rolling against the tread.
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It is a hazard to have directional treaded tires mounted backwards. Especially in wet or snow conditions. These tires have a tread pattern that is specifically designed for traction, but also evacuating water and shedding snow as they rotate. Consider the opposite affect and you will see why this is dangerous. I can't say for sure but would guess also that premature wear is also something that could occur as well.
I don't think you will necessarily see any significant change in gas mileage, you will find the vehicle handles better in adverse conditions (wet and snow). It may be possible that there would be a slight reduction in road noise, but to be fair, the tread pattern not direction has a greater bearing on road noise.