Winter Tires: Business Up Front or Party in the Back?

Winter Tires: Business Up Front or Party in the Back?

Photo courtesy of Washington State DOT:

Suppose you have a front-wheel-drive vehicle and youre looking to fit a set of winter tires. Also, lets assume that two of those tires have much more tread depth than the other two. On which end of the car do you install the better rubber?

According to the CBC, a woman in Dartmouth, Nova Scotia, Canada (thats my town!) ran into just this problem, complete with conflicting advice from two repair shops: One said putting the fresher rubber up front is safer as the vehicle is front-wheel drive, while the other said giving the rear more grip is the best course of action to reduce the chance of a spin out.

Which one is correct?

The vehicle in question, owned by Susan Hachey, is a 10-year-old Toyota Echo. She bought two brand-new winter tires and had them fitted to the Echo by Costco, along with two older tires she already owned.

Later, she went to her local Toyota dealership for an oil change. CBC explains:

As they were doing the oil change they came out and told me the mechanic was recommending the tires with the better tread be put on the front because it was a front-wheel drive, she said. 

So she went back to Costco and asked them to make the change.

The guy at the counter said, Well no. Its a safety issue. The tires with the better tread go on the back, she said.

She pointed out her car was front-wheel drive, but the technician told her it didnt matter because the tires with the better tread always go on the back.

Living where we live and considering that we have winter every year, I couldnt believe I was getting conflicting information from two reputable organizations, Hachey said.

As it turns out, the Costco technicians are correct, at least according to Popular Mechanics:

The truth: Rear tires provide stability, and without stability, steering or braking on a wet or even damp surface might cause a spin. If you have new tires up front, they will easily disperse water while the half-worn rears will go surfing: The water will literally lift the worn rear tires off the road. If youre in a slight corner or on a crowned road, the car will spin out so fast you wont be able to say, Oh, fudge!

There is no even if to this one. Whether you own a front-, rear- or all-wheel-drive car, truck, or SUV, the tires with the most tread go on the rear.

However, as is typically the case, not all is as it seems.

In their defense, vice president of service operations for ORegans Toyota Tim Manuel said, Generally our policy is that the best tires would go on the rear, but in the case of Hacheys Echo its debatable whether the new tires should go on the front or rear as the old tires were worn to 4/32nds of an inch of tread remaining, making them fairly useless in the snow.

In Nova Scotia, a tire worn to 2/32nds of an inch would be cause for failing the provinces vehicle inspection process. Summer, all-season and winter tires are all held to the same tread depth benchmark for inspections in Nova Scotia, as well. While winter tires are constructed of rubber compounds to provide better traction in colder temperatures on bare surfaces, more than 2/32nds — or even 4/32nds — of an inch of tread is needed for winter tires to perform in snow.

According to Hachey, she didnt know because she was never told her older tires were unsafe.

So, bottom line: If you absolutely must run two newer and two older tires on the same vehicle, fit the newer ones at the rear. But if you can come up with the extra scratch, do us all a favor and please buy a full set of winter tires — even if theyre the cheap ones.

[Photo: Washington State DOT]

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