Cracks around drilled vent holes on rear disc - MOT failure?

[Cheeseybeaner]

Wondering if cracks forming around the drill holes on my rear disc (diversion 900) are an auto MOT failure?
The mounting holes are fine they're just small crack a few mm each
that seem to be forming around the drilled vent holes.
It was a cheap replacement, about £40 on ebay rather than an original Yamaha one - probably a good reason to pay the extra for the dearer discs though must have had a good 70k miles use nonetheless...

[Hetzer]

If the MOT doesn't fail it (and it will if the tester spots them) the crash you'll probably have when the disc disintegrates on a high-speed brake will almost certainly fail your life-support systems.
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"There's the horizon! Ride hard, ride fast and cut down all who stand in your way!"

[Islander]

Hetzer is right. What is going to happen if you get a stress fracture between the cracks on the disc and it jams on the pads?

[_Iain_]

As above.

Tester might not spot it, but it'll probbably kill you if its not sorted out.

I know what i'd be doing
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Please be aware that the above post may be full of complete nonsense.
Riding: '07 KTM Duke II, Baotian BT49QT-20 Driving: '88 Volvo 340

[Cheeseybeaner]

Thanks I only just noticed them coming up a new disc shall be fitted . Unusual thing to happen though don't you think? Maybe the materials just aren't up to scratch on these cheaper rotors.

[janner_10]

Who gives a fig what the tester thinks. You have dangerous disc, change it as soon as!
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Yamaha FZS600 (Now gone to heaven) > CBR600F4i (SOLD) > '99 YZF-R1

[sidewinder]

Big danger coming to you soon .Change it now
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"Nitrous is like a cheap hooker, you want to hit it but are scared of the consequences

[Hetzer]

[stinkwheel]

[UrbanRacer]

[Islander]