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The aim of study was assessed clonal variability of starch and sugar soluble (SS) in trunk of rubber tree. The two experiments were set up, the first field compared 25 clones tested in an international clone exchange program which is now 30 years old. A second field clone trial was used for 15 years trees, with 18 clones. The results showed that an average starch in wood 71 mgGLUg/SDM and SS wood 21 mgGLU/gSDM recorded 25 clones exchange trial at 30 years were similar to the average obtained the same season in the previous study on standard clone RRIM600 age 11 years, starch 76 mgGLU/gSDM and SS 16 mgGLU/gSDM. However, mean contents SS bark 37 mgGLU/gSDM, and particularly starch in bark 25 mgGLU/gSDM were higher in the 30 years tree than the previous study SS 22 mgGLU/gSDM and starch 11 mgGLU/gSDM. The 15 years trial with 18 clones, mean content in wood were a bit higher for both starch 94 mgGLU/gSDM and SS 28 mgGLU/gSDM than the previous study. The bark SS 22 mgGLU/gSDM was similar as above but starch 41 mgGLU/gSDM was much higher than RRIM 600 age 11 years. Starch and SS in wood seems not much variable with age, However, carbohydrate contents in bark varied widely. The main source of variation may be the status of the bark Nevertheless, there was a negative correlation between cumulative yield and starch content in the bark Carbohydrate contents in clones had a high variability and heritability. Some interesting trends linking contents in the different forms of carbohydrate to clonal origin or to a well known metabolic characteristic were also detected.