What is the height of a 225 60 18 tire?
R18 tires have a diameter of 28. The sidewall of the tire is 5. A 235 tire is slightly wider and has a larger overall diameter than a 225 tire. This difference seems small, sure! But it can change how your car feels on the road. Wider tires improve grip.The 245 tire will be taller than the 225 if you keep the same aspect ratio (the middle number printed on the sidewall marking). For example, a 245/40R18 is about 0. R18.
What tires improve gas mileage?
Tires with low rolling resistance (LRR) often feature thinner sidewalls, shallower tread blocks and specialized rubber compounds. These features work in tandem to reduce the energy required to spin the tire, thus increasing fuel efficiency. The aggressive tread patterns of all-terrain tires create more rolling resistance, which can reduce your vehicle’s fuel economy.Temperature range and performance All season tires are optimized for moderate temperatures, while all weather tires are designed to maintain flexibility and traction in a wider range of temperatures, including cold winter conditions.Fuel Efficiency – Because of their lower rolling resistance, highway tyres usually offer better fuel economy. With their bulkier tread design, all-terrain tyres have higher rolling resistance, which can increase fuel use. This can be an important factor for drivers who value fuel savings and comfort.Summer performance tires feature tread rubber compounds engineered to provide traction in warm to hot temperatures only. As temperatures drop into the 40s, a summer performance tire’s tread compound changes from a pliable elastic to an inflexible plastic, drastically reducing traction capabilities.
What is the correct tyre pressure for 18 inch wheels?
The recommended tyre pressure for 225/40 R18 tyres can vary slightly based on the manufacturer and vehicle. However, a general guideline is to maintain the pressure within the range of 32 to 35 PSI (pounds per square inch). The ideal tyre pressure for road driving with be 38 psi. Traditionally tyre stores say 32 or 30 but we like to run them at 38 psi all the way to 40 psi which is safe. Obviously offroad use for 4×4 will be as low as 15 to 20 psi but need to research on what conditions and what others are doing for the same conditions.But you shouldn’t go too much over recommended PSI. You can safely over-inflate tires by up to 10%. For example, if your tires have a recommended PSI of 35, you can go up to around 38 PSI without worry. Anything more than that is too much and not recommended.The ideal tyre pressure for road driving with be 38 psi. Traditionally tyre stores say 32 or 30 but we like to run them at 38 psi all the way to 40 psi which is safe. Obviously offroad use for 4×4 will be as low as 15 to 20 psi but need to research on what conditions and what others are doing for the same conditions.