I’ve had stretched tyres go through the NCT many times over the years but last year the e38 got a visual on the tyres being too fat. The tester mentioned new or recent changes to the rules about tyre specifications but even the new rules don’t mention any parameters for a fail for stretch or oversized or any of the likes so I got away with that one. I think in that case you just got a picky tester like I did.
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