You will generally record your logbook experience sheets by Aircraft Type, then further by ATA chapter.
Ie, 737NG is recorded seperately from Airbus A320. So as Rigger says you can't cross over jobs, even if they are in the same ATA chapter (as with wheel/brake replacements you mentioned).
Your experience starts from the first jobs you will record in your logbook. However I expect this will be seperate with the licence catagories.
So when you start recording A320 worksheets (for example) towards your B1.1, it will not count towards B1.3 heli experience time, and you will still need the minimum time for that seperately (1yr) as per ELGD.