Hi All, I'm a Noob here, and here is my Noob Q(s) I just bought my latest bike, a 2007 Suzuki GSX1400, with just 4,500 kms on it. It's still on it's original Bridgies and i have noticed the tyres are bleeding up to 4 psi between rides, sometimes in as little as 2 or 3 days. Is this normal? Do street tyres typically have an "expiry"? The older i get the faster i was, having said that i haven't had them move on me too much in the dry, but caught in the wet I had a 260 kg moto crosser on my hands. Pirelli Angel GT's are on the shopping list, but the original tyres have visibly a bit more left in them.