Is R18 a tire size?
The next part of the tire size is a letter denoting its construction, sometimes a Z speed rating, and the size of the wheel that it is designed to fit, measured in inches. When it says R18, it means that it has a radial-ply construction and it fits an 18-inch rim. A 20-inch wheel usually means fewer tires between the wheel and the road, while an 18-inch wheel has more rubber around it. Smaller diameters, thicker tires, and more sidewall sizes are used in 18-inch wheels. The 20-inch wheels are quite larger in diameter, with thinner tires and sidewalls.
What is better, 17 or 18 inch tires?
If you mainly drive on smooth roads, 18-inch wheels with smaller sidewalls won’t be an issue. But if you often drive on rough, bumpy roads, you’ll benefit from the added comfort of 17-inch wheels, as the extra sidewall height helps prevent blowouts from potholes. Final Takeaways Choose 16-inch wheels if you prioritize comfort, fuel efficiency, lower costs, and better protection against potholes. Go for 18-inch wheels if you want a sportier, more aggressive look but don’t mind a firmer ride or a higher price tag.Benefits of 18 wheels some benefits of custom 18 inch wheels are improved acceleration, braking and traction in all aspects of driving, lighter weight in comparison to bigger wheels (especially if opting for flow formed wheels), and a more universal fitment suitable for most cars.Keep in mind that 18-inch tires are typically more expensive than smaller sizes, and they may provide a slightly firmer ride.