Ceat Tyres: The company hiked prices of its tyres for a second straight quarter. This helped it push its profit margins up to 6.1% from 1.3% a year ago, even as prices of raw materials rose this quarter. Rubber prices, the key ingredient in tyre-making, ended higher in the quarter, responding to the rise in crude oil prices. Total expenses rose 2.5%, with raw material costs shooting up nearly 3%.