oldcro
MB Enthusiast
This information found after a quick Google seems to contradict your advice on tyre washing.
Don't use the pressure washer closer than 12 inches / 30 cm from paint, feel free to use it 2 inches / 5 cm from tyres and bare metal.
According to a recent survey by TyreSafe, it was revealed that over 80% of drivers were unaware of the impact that pressure washing can have on their tyres and the danger posed.
In fact, German safety group DEKRA has discovered that if a washer nozzle is held close to a tyre at very high pressure, serious damage can occur in just five seconds! Even tyres that appear normal after being subjected to a pressure washer may have microscopic perforations, which can weaken the sidewall and cause a possible blow-out.
Other contributory factors to sidewall damage are the width of the water jet and the strength of any soaps or detergents used. Strong soap can remove protective chemicals that are embedded in the sidewall - usually resulting in the visual indication of brown watermarks - which can result in a significant reduction in durability.
For worry-free washing, TyreSafe has the following tips for motorists:
Ideally, a light-to-medium duty pressure washer should be used (110 bar or less)
The washer jet nozzle should be kept at least 20 cm from the tyre surface
Always use a fan nozzle to clean tyres, rather than a circular nozzle
Prevent prolonged exposure to a specific area of the tyre
Avoid aiming the water jet directly at the join between the tyre and the wheel rim
Don't use the pressure washer closer than 12 inches / 30 cm from paint, feel free to use it 2 inches / 5 cm from tyres and bare metal.
According to a recent survey by TyreSafe, it was revealed that over 80% of drivers were unaware of the impact that pressure washing can have on their tyres and the danger posed.
In fact, German safety group DEKRA has discovered that if a washer nozzle is held close to a tyre at very high pressure, serious damage can occur in just five seconds! Even tyres that appear normal after being subjected to a pressure washer may have microscopic perforations, which can weaken the sidewall and cause a possible blow-out.
Other contributory factors to sidewall damage are the width of the water jet and the strength of any soaps or detergents used. Strong soap can remove protective chemicals that are embedded in the sidewall - usually resulting in the visual indication of brown watermarks - which can result in a significant reduction in durability.
For worry-free washing, TyreSafe has the following tips for motorists:
Ideally, a light-to-medium duty pressure washer should be used (110 bar or less)
The washer jet nozzle should be kept at least 20 cm from the tyre surface
Always use a fan nozzle to clean tyres, rather than a circular nozzle
Prevent prolonged exposure to a specific area of the tyre
Avoid aiming the water jet directly at the join between the tyre and the wheel rim