Forgive me for such a stupid question .......
Forgive me for such a stupid question .... I've a Felt ZW75 that has with Vittoria Zaffiro Pro 700x23c tires. Need I purchase Vittoria inner tubes or does that not matter?
If you're asking if you NEED to use Vittoria tubes with Vittoria tires, the answer is "absolutely not". You can mix and match, but be sure that the size of the tubes matches the tires; in your case, you have 700 x 23 tires, so just make sure that the tubes you buy are for 700 x 23 (more likely on tubes, you'll get a range, say 19-23). Also, be sure that you get the right valves. There are schrader and presta. Schraders are like what you have on your car (assuming you have one!), and presta are the skinny ones found on higher-end bikes - my guess is that's the case for your Felt... they'd use good wheels, and good wheels use presta.
No. I worked at a felt dealer for 2 years. Presta valves for sure. Also I would use 18-23's for anything up to a 27, easier to change the flat and the rubber can stretch without a problem. This is the advice I have given to dozens of customers and I've heard nothing but thank you my flat was much easier to change.