The Heritage Foundation explains the consequences of tariffs for all the groups who are affected.

Excerpt:

“Over a thousand Americans are working today because we stopped a surge in Chinese tires,” asserted President Obama in his State of the Union Address. President Obama referred to steep tariffs that his Administration imposed on tires imported from China.Not everyone sees it that way. According to the Tire Industry Association (TIA):

TIA believes this was a politically motivated decision that will end up costing more jobs than it saves. These tariffs will not bring back the jobs that the union claims have been lost; it will not create any new tire manufacturing jobs, and it will most likely result in the loss of thousands of retail tire industry jobs here in the U.S., affecting everyone from the shop that services your tire to the tire wholesalers—many of whom are small businesspeople struggling to stay afloat in this economy. This, all during a time when we can ill afford to be losing more U.S. jobs.

The Association pointed out that there is more at stake than dollars and cents:

This tariff will price these tires out of reach of many consumers, and will lead to a tightening in the remaining supply of lower-cost tires. Also, given that the lower-cost tires imported from China help those most vulnerable in this current economy—working-class citizens—we are deeply concerned that many consumers may delay or even defer replacing their tires when necessary, thus creating a potential safety hazard on America’s roads.

When you put a tax of lower-priced goods, the people who are hurt the most are working class workers. During a recession, people have even less money to spend and they need to be able to have the option of buying cheaper foreign goods. Tariffs take away that option, and force families to pay higher prices for the things they need.