What if-and believe me, this is a hypothetical-you were trying to put a wild, rare, 200-hp naturally aspirated Autech SR20DE from the hottest of the nonturbo S15 Silvias into a first-generation Miata, ...

In the Oct. 2014 Pit Stop, you explained why horsepower and torque always cross at 5,252 rpm. And in the past you've published formulas for the relationship between miles per hour (mph), axle ratio, ...

"Give me a lever long enough and a fulcrum on which to place it, and I shall move the world." — Archimedes (287- 212 B.C.) On the street, everything is a compromise. Power is now easier to make than ...

After lifting your truck or SUV, you almost always step up to a larger wheel and tire size to complement the new beefy look. When increasing the tire diameter from the factory size, it will have a ...