Here's a placard James... looks like I need to speak to Dean again too - my tyres (very common on GTRs) aren't listed; 255/40/17 (Falken Azenis, 94ZR)
I don't want to get done for something as pedantic as a tyre size that's unlisted, especially when they're a safe tyre, rated for high-speed use, when there's people out there running on retreads.