Mate I can't remember the dates of when it changes, but all you have to rememba is to follow ur tyre placard (which in your case is 14" and 84H load rating) (so yes you can go 87). Also remember there are other rules which must be abided by e.g. tyre must be within 15mm either way of ur stock ROLLING diameter, you cannot go further than 2 inches smaller/larger in the height of ur rim (so in ur case the max size wheels you can get is 16 inch), or 1 inch wider (I don't know what stock width ur rim is, I would say it is 5 or 6 inch (mine is 6 inch). there is probably other rules but I can't rememba them. Just do a search on this forum as well as talking to the relevant people (e.g. tyre fitters) about other legalities.