abstract |
This invention relates to a pneumatic rubber tire (1) having a rubbernsidewall (6) composition of a lug (4) and groove (5) configuration which isndesigned to be ground contacting. Such sidewall configuration is of a rubberncomposition comprised of a blend of natural rubber and cis 1,4-polybutadienenrubber which contains carbon black and silica together with a coupling agent. |