Assertion: radial tire's resistance | /r/CapableOf | crack growth
Facets:
value: to low
type: OTHER
value: in rolling resistance
type: MANNER
Source sentences:
text: The sidewall portion of a tire has an important roll to protect the tire carcass against external damage, and the rubber material for that tire portion is required to possess such mechanical properties as resistance to flex and crack growth and resistance to abrasion on contact for example with curbstones and other obstructions on the road.
text: It is therefore the primary object of the present invention to provide a pneumatic radial tire for automobiles which is excellent in resistance to flex and crack growth as well as to external damage and extremely low in hysteresis loss and hence in rolling resistance.
text: NR and/or polyisoprene rubber (IR) if smaller than 30 weight parts would result in insufficient resistance to abrasive wear of the sidewall and if larger than 70 weight parts would lead to less resistance to flex and crack growth than allowable.
text: It has been further found that more than 20 weight percent of 1,2-vinyl bonds in BR would result in greater rolling resistance and in reduced resistance to flex and crack growth and to external damage of the sidewall.