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@Khornight2
You can use 48s in deep v's, but basically just the end of the valve sticks out. You can get the straightening screw on, but not when pumping the tyres up. It's fine unless you use a pump with both Presta and schrader holes because the pump can't tell which is being used. And it's a bit of an arse when you first pump them up.
But for polo it's good because almost no valve is sticking out...