Like Tony says, you can't argue with the results.
Sometimes I run at a very small local indoor track thats all slippy polished floor with no jumps and Ive been playing with the weights in my X6. So far Ive found that putting more weight in the front makes the car push into the bends rather than giving it more grip but exit grip seems better. Weight on the rear improves traction and grip out of the bends but makes the tail a bit loose mid corner and hampers acceleration. This makes weight a valuable tuning aid to get the best out of the cars setup. The first thing I alter is spings, then its weight, then I move onto shock positions and the rest.
When I ran my B4 I used sticky weights and never moved them but with the X6 Ive got the full brass kit so I can add or remove weights to suit the conditions
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