Drill It?

Just got some UST tyres, a sealant kit, and non UST rims. The sealant kit instruction is saying to drill the inner/outer(? the one that the rim tape goes against) wall rim to enlarge the valve hole – is this necessary?

Anyone?

Like this?

Well, what type of valve does the rim strip have and what drilling does the rim you’re going to use have? If, for example, you have a presta valve with a presta drilling on the rim, then no. I think some Stan’s rim strips come as Schraeder only, in which case if using a Presta drilled rim you’ll need to drill it.

Yes, like that.

Its a stans rim strip, with a presta valve.

You’ll be alright then….as long as you haven’t got a schraeder drilled rim 😉