OENROil Extended Natural Rubber
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It was observed that rolling resistance was reduced by some 8-12% on the substitution of OESBR by 20, 40 and 60 parts of OENR, but considerably more (25%) when replaced altogether by OENR.
At below 15 [degrees]C, there was no change in wear rating when up to 40 parts OESBR were substituted by OENR, but at higher substitution levels, the addition of OENR gave 10% improvement in wear.
These trials, therefore, indicate that up to 40 parts OENR can be incorporated into all-season tires to improve ice and snow traction and other low temperature properties with no change in wet grip, a small improvement in rolling resistance, and probably insignificant loss in wear performance over any 12 month period.