BMW 535i Sport Package front tire Goodyear Excellence 245-40-19 has developed a small bubble in the outer sidewall. Goodyear's free road hazard warranty for run flats will cover entire cost up to 2/32 or 1 year. This BMW is 13 months, so only prorated coverage by tread wear as a percentage of the total new depth of 8/32 is allowed. Mounting and balancing is extra.
The warranty is shown here:
http://www.tirerack.com/images/pdf/warranty/GYEAR2.pdf