I'm just wondering if anyone from here does tyre changes at race meets or know where I can get my tyres changed in Wollongong?

I tried to get a set of pirelli slicks changed by WRP today and he just flat out refused because I bought the tyres cheaper elsewhere and he has a grudge against the pirelli importer in Australia. Thought it was a bit ridiculous because when I asked he wasn't busy at all, so it makes no sense to refuse the work and hence refuse the cash I would have happily paid, rather than sit there and get no cash.

So yeah, looking to get some tyres changed, preferably for cheaper than $90 a set (what I've been offered down here).