by Influencer » Tue Jul 21, 2009 8:10 pm
The correspondance to all the tyres manufacturers was done on their individual websites on the enquries/customer requests section. This generates a email response. The exact wording to all was as follows.
I'm doing some research into your tyres ingrediants. Can you tell me whether the Stearic Acid used in the Production process is food grade/vegetable derived or is it non food/ animal derived.
All replies were then followed up with- Are there any other animal derived ingrediants used in your tyres or the Production process.
To question 1- only Michelin answered 'no'- as in posted email.
To question 2- all answered no. (Apart from continental, who got snotty and refused to answer any more questions)