Because the strength of alloy wheels is stronger than that of iron wheels, it is generally the deformation of alloy wheels is less unless impact of the highest strength.
And because of the materials, the alloy wheels are more "brittle" so that they are easier to fracture. So high was hit over pit or check the house over there should be signs of cracking. If there is, or the relationship immediately changed it to your security. Wheel easily be blown, if the aluminum blew outside appearance has little impact in addition to the usual alloy wheels material in the environment (non-saline environments operator) will not rust, so let him go. Alloy wheels also have to pay attention to the long wait in cold water immediately after using the brakes, not only hurts the wheel also affects the brakes makes the braking effect of uneven brakes.
Iron wheels
Be different from the maintenance of alloy wheels, iron wheels should be noted to check whether more deformation, once the work is very easy to puncture the tires caused fatal. Note the course of oxidation, after the best anti-rust paint on the point the surface was scraped, or iron oxide is very easy to reduce the strength of the hub. Because the heat dissipation of iron wheels is worse than the alloy wheels, so after parking needs more time to heat than alloy wheels, or easily in cold water under the impact of heating or cooling caused a slight deformation, will be deformation of the tire a long time. So do not immediately open the car wash had the best long distance at room temperature, cool 15-30 minutes.