Choosing good slick tires for a MTB I have an MTB with tires that roll very poorly on pavement because of the thread lugs. I'm looking to get a pair of slicks and I'm hoping to get some advice here. My bike is a 29&quot;, I think they current tires are 700c 2.0&quot; so I'm looking for something between 35c to 45c? What's the difference from choosing 35c vs 45c? Will it go faster on 35c and can I expect some difference in handling of the bike?
Would it be better to buy some new wheels than 2.0? Any advice on optimal tires for such a bike?
Since you have 700C/ISO-622 rims and you're doing pavement riding, I'd recommend one of the Conti "Gatorskin" tires. They go up to 32mm wide-- which is nearly optimal for urban street riding and nicely adequate for occasional trails w/o mud.

These are very popular as training tires for roadies (in narrower widths) because they're very resistant to flats caused by glass.

Handling will be different in "feel", but nothing that you can't get used to in 10 minutes of riding.