Zenmervolt
Elite member
- Oct 22, 2000
- 24,514
- 34
- 91
I was just saying that you never used to see beater cars leaving shops with a fresh set of performance summer tires, because that would've been cost-prohibitive. But now I see an increasing use of off-brand summer tires as the bottom rung offering.
My guess is there may be some DOT or other standards at play? As in, said el-cheapo tires can't be sold as all-seasons, so they just get labeled 'summer' and unfortunately are going to end up getting sold to a consumer who doesn't know any better. I've wondered before what kind of criteria new tires have to meet, and if there is any actual testing involved.
Ahh, that makes more sense. I'm sorry that I misunderstood.
While I agree that selling summer-only tires to people without carefully explaining that they should not be used at temperatures below 50 degrees is irresponsible, I'm not sure that the availability of inexpensive tires is per se bad. The cheap summer-only tires may not perform quite up to the level of the best name-brand summer-only tires, but they're still great options for people who do track days and they definitely do better than a set of all-seasons for that purpose.
There is no DOT requirement for an "all-season" name. The "M+S" rating (generally synonymous with an "all-season" name or classification) is maintained by two independent bodies, the Rubber Manufacturers Association and the Rubber Association of Canada.
The NHTSA controls the Uniform Tire Quality Grade specifications, but these stipulate only dry traction, heat dissipation, and wear characteristics. These ratings are very outdated though and it's relatively rare for a tire to get a traction rating lower than "A."
The only DOT requirement for tires is that they contain a code on the sidewall listing their manufacturer, the batch, the factory, the mold, and the date the tire was produced.
ZV