There's a lot of numbers associated with picking out tires for your car, but one you may not look too closely at is arguably the most important: speed rating.

A lightweight, fast-feeling, super grippy tyre is complemented by a very good value price tag, making these a very attractive race tyre.

Tires are a crucial piece of the automotive puzzle, and a set of tires can make or break a car. How long can they last if you don't do a lot of miles?

While the colored lines found on new tires are optional, follow along to see what they mean, and why they are there.

So far today, President Donald Trump's much-anticipated tariff letters have targeted Japan, South Korea, Laos, Malaysia, Myanmar, South Africa and Kazakhstan. That's shown in the chart above.