I plan to participate in my first triathlon this summer. This will be a 1/4 Ironman, which includes 45km of cycling. I have a Specialized tricross sport bike (2012) upgraded to 105 components. I haven't changed the wheels, so I use some entry-level cyclocross wheels (32 spokes front & rear, 700x32c tires).
I have been doing quite lot of commuting and touring, but I have never raced on a bike. My goal is to do the 45km in ca 1.5 hour. And finally, my question is: is it worth to buy some entry-level road wheels (like shimano wh-rs30 or mavic aksium), or at my level I won't notice any improvement compared to my current setup?
Or, maybe, should I just buy some narrower tires?