Never had the chance you change any rubber on my Gen 4 Carbon Rims, so not sure what the parameters are.
The reference I make is the maximum allowable weight applied to correctly balance a wheel/tyre assembly on a beemer, I know its 80 grammes on HP4 rims which is a lot in my opinion.
Carbon rims will have a lower tolerance as they are lighter, had a quick browse on my phone and couldn't find a reference online, maybe someone with more info will chime in.
Worth noting....Tyres can have heavy/light spots usually signified with a painted dot on the side, a savvy fitter will fit the tyre with the dot at either 180 degrees to the valve (opposite side) or directly at the valve stem (depending on tyre manufacturer) then balance it up.. generally a true rim with a correctly mounted tyre shouldn't take much weight to correct the balance, sometimes no weight is needed at all, my HP4 has no weights on the rear and 25g on the front..
Just checked my Haynes manual and can't see anything regarding balance weights, the figures must be in the bikes manual for sure..
Dunno if this makes anything clearer to you lol..[emoji1]
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