Hector, there is no "supposedly" about it. It's a fact.
"If you do use tire dressings, they should not contain petroleum products or alcohol."
- Dave Schumann, Director - Service, Parts, and Warranty Administration
"No product with petroleum solvents, mineral sprits, kerosene or other paraffin solvents should come into contact with tires."
- Michelin
"Visual tire inspection checklist: What to look for....Chemical damage from petroleum products."
- Goodyear
"Tires must not be allowed to come in contact with oils, greases, solvents, or other petroleum products that cause rubber to soften or deteriorate."
- Hoosier Tire
"Use caution when selecting tire-- care products, and do not use any that contain alcohol or petroleum distillates, which can actually accelerate breakdown of the tire compound."
- Subaru.com
"Petroleum distillates are harmful to rubber and vinyl, and will cause rubber and vinyl to crack."
- Hawg Wash Cycle Care
"However, many of these products contain petroleum or alcohol derivatives. You should know that both of these substances will damage your tires. Over a period of time they will cause the rubber to decompose. If you do use protectants on your tires, be sure to check the label on the can. If you're not sure whether the product is safe to use on your tires, the best advice is not to use it."
- Adam's Tire
"...petroleum distillates act as solvents, eating rubber on contact..."
- Autopia (detailing site)
"Never use anti-freeze, silicones or petroleum-base lubricants. This will damage the tire."
- General Farm Tire
"Avoid using, so called, tire treatments that contain petroleum based substances. Any tire dressing that contains alcohol or petrochemicals may, instead of protecting, actually cause and accelerate deterioration and cracking. Some silicone oils found in such products will dissolve the protective wax that protects the tire against the ozone damage. Also, petroleum based tire treatmentscontain no viable UV stabilizers at all, so the tire is left virtually stripped of any ozone protection andmust contend with UV radiation with no replenished stabilizers. Additionally, many tiremanufacturers actually inspect the tire for use of these chemicals, especially in the case of prematuresidewall structural failures in a warranty situation."
- RV Lifestyles Magazine
"Tire dressings that contain petroleum products or alcohol may cause deterioration or cracking."
- RVAdvice.com
"Oil and grease, as well as all petroleum based products, are damaging to rubber."
- White Rubber Corp.
I think that's enough to put it to rest.
