NEW DELHI, Sept. 25 -- International prices of natural rubber have risen 25% in the past three months, but tyre makers won't be overly concerned as benign crude oil prices are expected to offset the impact of higher rubber prices.

For tyre manufacturers, natural rubber and crude derivatives account for around 45% each of the total raw material cost. Indian tyre companies import a large part of their natural rubber requirement from southeast Asia. Prices of international natural rubber rose in August because of high demand from China amid supply constraints, analysts said. The price of natural rubber in India also increased In line with the global trend.

On the other hand, global crude oil prices remain on a soft footing around $42 per bar...