Hyperdrive has 40% off tyres deal running over the long weekend. Needed some new tyres and managed to save myself $111 using the code.
Also, if you sign up to their newsletter you can also get $50 off your next purchase over $200 using the code EXIT50
I believe the codes CANNOT be stacked.
I hate the Hyperdrive radio ads (yeah, I still listen to broadcast radio). But I have to say I was pleasantly surprised by their service last time I needed tyres. While Tony's Tyres certainly offered me a cheaper overall deal for new tyres (of course after presenting the HD deal to them), the HD special ended up being a much better quality tyre for not much more money. And I didn't have to fend off overzealous salespeople trying to upsell me on their highly dubious nitrogen fills (seriously?), unnecessary wheel alignments and even trying to upsell me to the next model up after already booking with them for the cheapest.
With Hyperdrive I didn't need to call around several local outfits to find the cheapest deal, you just pay and book in with a local shop. Note that the price you see per tyre is not the final price, they add on a fitting charge or something, so be sure to take the quote through to completion to get the full cost for comparison. I haven't used their mobile fitting service, it's probably more costly.