How Changing Your Final Drive Ratio Can Make Your Car Quicker
But it can also reduce your top speed and fuel economy. Food for thought. A car's gearing is all about compromise. Taller gears allow for a higher top speed and better fuel economy, while shorter gears give you rip snorting acceleration. The problem is that changing individual ratios in a gearbox can be a tricky mess. And changing an entire gearbox can be prohibitively expensive.
