Tyre Damage Guarantee, Mathematics?

I shopped around and bought Firestone tyres because of their All Road Hazard Guarantee. I was not surprised when I had my first claim. As always marketing and reality do not add up.<br> <br> I had a puncture and went to Autoquip Centurion to have it repaired. I have always received excellent service from them. The puncture was not repairable and I was told they would replace the tyre under the Firestone Tyre Damage Guarantee.<br> <br> The tyre was removed from the rim and a first person measured 3 mm tread remaining. I had another person measure and he measured 4 mm at the lowest point and 4.7 mm at other points. (Dubious?) That translated to 50% tread left. According to their price this tyre is R1170.00. So I paid in 50%. Add another R90.00 for fit, balance and nitrogen fill, which I specifically declined but was charged, and I paid in R675.01. I asked for a quote for a replacement tyre as I felt like upgrading my spare tyre and was Quoted R995.00 fitted and balanced!<br> Beware of the Firestone Marketing hype!<br> <br> Except for the measuring and billing errors the service from Autoquip was friendly and efficient and I shall support them again in future.<br>