| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heavy-duty pneumatic tire whose cost is prevented from increasing while the surface of a sidewall is prevented from being microcracked. <P>SOLUTION: This invention relates to the heavy-duty pneumatic tire, configured such that: the outerlayer of the sidewall comprises a rubber composition, the rubber component of which contains 10 mass% or more of ethylene-propylene rubber and a 20 mass% or more of butyl rubber, wherein the outerlayer has a thickness of 0.5 mm or larger; and the innerlayer of the sidewall comprises a rubber composition, the rubber component of which contains 60 mass% or more of natural rubber. <P>COPYRIGHT: (C)2013,JPO&INPIT |
