Will the undercoating fall off if sprayed on tires?
3 Answers
Undercoating sprayed on tires will not fall off. Corrosion protection for the chassis: Car rust usually starts from the bottom plate. For example, washing water may remain at the bottom, and over time, it can become a potential corrosion factor, causing damage to the vehicle; Heat insulation and fuel saving: When entering summer, the cold air from the car's air conditioner sinks downward, while the hot air from the ground outside rises upward. Most of the cold and hot air exchange occurs on the vehicle's floor. The effectiveness of the vehicle's bottom protection directly determines the efficiency of the cooling energy utilization. After the vehicle's bottom is treated, the honeycomb-structured sound-absorbing factors in the coating will completely isolate the cold and heat; Noise reduction: When driving on highways, the friction noise between the wheels and the road surface is proportional to the speed. A well-protected vehicle bottom can significantly reduce the noise inside the car.
As a car enthusiast who loves tinkering with my own vehicle, I can tell you that undercoating sprayed on tires tends to peel off easily. The reason is quite simple - the protective coating is designed to adhere to metal chassis surfaces, but tires are made of rubber with smooth surfaces that constantly flex and rotate during driving. The coating simply can't bond firmly, gradually wearing away or cracking off. When I accidentally sprayed some during a DIY project, the coating started flaking within days, leaving messy residue around the tires. Always cover tires with plastic sheeting before spraying to prevent overspray. If already applied, try gently wiping with mild cleaner first. This may also slightly increase rolling resistance due to uneven tire wear, so address it promptly to maintain driving safety.
From my car repair experience, the chance of chassis armor falling off when sprayed on tires is quite high. The armor spray doesn't adhere well to rubber surfaces. During daily driving, as tires heat up, expand, and flex, the coating can easily peel off, potentially leaving fragments that could become flying hazards. Once when helping a friend with his car, I accidentally sprayed armor on the tire, and most of the coating came off within days. The cleaning method is to gently wipe with automotive-specific solvent, avoiding harsh scraping to prevent tire damage. Tires aren't designed to carry such coatings - long-term exposure could slightly reduce tire performance and even increase fuel consumption. So be extra careful with protection during spraying, and if any overspray occurs, address it promptly to ensure normal vehicle operation.
