A tire with the wrong inside diameter may not properly fit the rim, while a tire with an incorrect outside diameter may affect the accuracy of the vehicle's speedometer and odometer. Additionally, because the traction control, torque and gearing settings depend on the distance the wheel travels in one revolution, a tire with the wrong outside diameter may also affect the proper function of these critical systems.Know More
However, these pitfalls can be avoided by maintaining the overall size of the wheel when purchasing rims and tires. For instance, if the new rims are larger than the original ones by 2 inches, the height of the new tires must be 2 inches shorter. Keep in mind, though, that the height of a tire is not directly specified and must be calculated from its aspect ratio, or the proportion of its height to its width.
By carrying out these calculations, and buying the correct combination of rims and tires, a driver can even enhance the way a vehicle looks and drives. In fact, upsizing, or using a larger rim, can improve the car's braking performance, cornering grip and steering feel. And downsizing, or using a smaller rim, is useful when buying snow tires, as they tend to be less expensive and more effective on snow and ice in narrower sizes.Learn more about Tires, Rims & Wheels
Finding the correct snow tire size for a vehicle involves learning to read the information on the sidewalls of tires, which displays the many aspects of sizing, including tire width, load index and rim diameter. Many tire manufacturers also abbreviate the type of vehicles best suited for certain tires: these letters show car and truck drivers which snow tires fit cars, trucks and vans.Full Answer >
Larger tires are heavier and have more resistance on the road, which can drastically decrease the overall fuel economy of a vehicle. Larger tires may also require larger wheels, which can increase the weight of the vehicle. A driver is expectant to see up to a 10 percent loss in fuel economy when increasing a car's tire size.Full Answer >
The standard tire size for a 15 x 7 rim is 205/65R-15. However, wider tires with larger tires can fit, according to the amount of space available on the chassis of the vehicle.Full Answer >
Some tips for buying used custom tire rims include checking to make sure that the rim's diameter is the same as the car's current tires, reading the manufacturers recommendations on rim width and weight, and checking the condition of the rim. Buyers should always inspect rims in person whenever possible.Full Answer >